--- /dev/null
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2015 EZchip Semiconductor Ltd. 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 EZchip Semiconductor 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 <unistd.h>
+
+#include <rte_eal.h>
+#include <rte_dev.h>
+#include <rte_eal_memconfig.h>
+#include <rte_ethdev.h>
+#include <rte_malloc.h>
+#include <rte_cycles.h>
+
+#include <arch/mpipe_xaui_def.h>
+#include <arch/mpipe_gbe_def.h>
+
+#include <gxio/mpipe.h>
+
+#ifdef RTE_LIBRTE_MPIPE_PMD_DEBUG
+#define PMD_DEBUG_RX(...) RTE_LOG(DEBUG, PMD, __VA_ARGS__)
+#define PMD_DEBUG_TX(...) RTE_LOG(DEBUG, PMD, __VA_ARGS__)
+#else
+#define PMD_DEBUG_RX(...)
+#define PMD_DEBUG_TX(...)
+#endif
+
+#define MPIPE_MAX_CHANNELS 128
+#define MPIPE_TX_MAX_QUEUES 128
+#define MPIPE_RX_MAX_QUEUES 16
+#define MPIPE_TX_DESCS 512
+#define MPIPE_RX_BUCKETS 256
+#define MPIPE_RX_STACK_SIZE 65536
+#define MPIPE_RX_IP_ALIGN 2
+#define MPIPE_BSM_ALIGN 128
+
+#define MPIPE_LINK_UPDATE_TIMEOUT 10 /* s */
+#define MPIPE_LINK_UPDATE_INTERVAL 100000 /* us */
+
+struct mpipe_channel_config {
+ int enable;
+ int first_bucket;
+ int num_buckets;
+ int head_room;
+ gxio_mpipe_rules_stacks_t stacks;
+};
+
+struct mpipe_context {
+ rte_spinlock_t lock;
+ gxio_mpipe_context_t context;
+ struct mpipe_channel_config channels[MPIPE_MAX_CHANNELS];
+};
+
+static struct mpipe_context mpipe_contexts[GXIO_MPIPE_INSTANCE_MAX];
+static int mpipe_instances;
+
+/* Per queue statistics. */
+struct mpipe_queue_stats {
+ uint64_t packets, bytes, errors, nomem;
+};
+
+/* Common tx/rx queue fields. */
+struct mpipe_queue {
+ struct mpipe_dev_priv *priv; /* "priv" data of its device. */
+ uint16_t nb_desc; /* Number of tx descriptors. */
+ uint16_t port_id; /* Device index. */
+ uint16_t stat_idx; /* Queue stats index. */
+ uint8_t queue_idx; /* Queue index. */
+ uint8_t link_status; /* 0 = link down. */
+ struct mpipe_queue_stats stats; /* Stat data for the queue. */
+};
+
+/* Transmit queue description. */
+struct mpipe_tx_queue {
+ struct mpipe_queue q; /* Common stuff. */
+};
+
+/* Receive queue description. */
+struct mpipe_rx_queue {
+ struct mpipe_queue q; /* Common stuff. */
+ gxio_mpipe_iqueue_t iqueue; /* mPIPE iqueue. */
+ gxio_mpipe_idesc_t *next_desc; /* Next idesc to process. */
+ int avail_descs; /* Number of available descs. */
+ void *rx_ring_mem; /* DMA ring memory. */
+};
+
+struct mpipe_dev_priv {
+ gxio_mpipe_context_t *context; /* mPIPE context. */
+ gxio_mpipe_link_t link; /* mPIPE link for the device. */
+ gxio_mpipe_equeue_t equeue; /* mPIPE equeue. */
+ unsigned equeue_size; /* mPIPE equeue desc count. */
+ int instance; /* mPIPE instance. */
+ int ering; /* mPIPE eDMA ring. */
+ int stack; /* mPIPE buffer stack. */
+ int channel; /* Device channel. */
+ int port_id; /* DPDK port index. */
+ struct rte_eth_dev *eth_dev; /* DPDK device. */
+ struct rte_pci_device pci_dev; /* PCI device data. */
+ struct rte_mbuf **tx_comps; /* TX completion array. */
+ struct rte_mempool *rx_mpool; /* mpool used by the rx queues. */
+ unsigned rx_offset; /* Receive head room. */
+ unsigned rx_size_code; /* mPIPE rx buffer size code. */
+ unsigned rx_buffers; /* receive buffers on stack. */
+ int is_xaui:1, /* Is this an xgbe or gbe? */
+ initialized:1, /* Initialized port? */
+ running:1; /* Running port? */
+ struct ether_addr mac_addr; /* MAC address. */
+ unsigned nb_rx_queues; /* Configured tx queues. */
+ unsigned nb_tx_queues; /* Configured rx queues. */
+ int first_bucket; /* mPIPE bucket start index. */
+ int first_ring; /* mPIPE notif ring start index. */
+ int notif_group; /* mPIPE notif group. */
+ rte_atomic32_t dp_count; /* Active datapath thread count. */
+ int tx_stat_mapping[RTE_ETHDEV_QUEUE_STAT_CNTRS];
+ int rx_stat_mapping[RTE_ETHDEV_QUEUE_STAT_CNTRS];
+};
+
+#define mpipe_priv(dev) \
+ ((struct mpipe_dev_priv*)(dev)->data->dev_private)
+
+#define mpipe_name(priv) \
+ ((priv)->eth_dev->data->name)
+
+#define mpipe_rx_queue(priv, n) \
+ ((struct mpipe_rx_queue *)(priv)->eth_dev->data->rx_queues[n])
+
+#define mpipe_tx_queue(priv, n) \
+ ((struct mpipe_tx_queue *)(priv)->eth_dev->data->tx_queues[n])
+
+static void
+mpipe_xmit_flush(struct mpipe_dev_priv *priv);
+
+static void
+mpipe_recv_flush(struct mpipe_dev_priv *priv);
+
+static int mpipe_equeue_sizes[] = {
+ [GXIO_MPIPE_EQUEUE_ENTRY_512] = 512,
+ [GXIO_MPIPE_EQUEUE_ENTRY_2K] = 2048,
+ [GXIO_MPIPE_EQUEUE_ENTRY_8K] = 8192,
+ [GXIO_MPIPE_EQUEUE_ENTRY_64K] = 65536,
+};
+
+static int mpipe_iqueue_sizes[] = {
+ [GXIO_MPIPE_IQUEUE_ENTRY_128] = 128,
+ [GXIO_MPIPE_IQUEUE_ENTRY_512] = 512,
+ [GXIO_MPIPE_IQUEUE_ENTRY_2K] = 2048,
+ [GXIO_MPIPE_IQUEUE_ENTRY_64K] = 65536,
+};
+
+static int mpipe_buffer_sizes[] = {
+ [GXIO_MPIPE_BUFFER_SIZE_128] = 128,
+ [GXIO_MPIPE_BUFFER_SIZE_256] = 256,
+ [GXIO_MPIPE_BUFFER_SIZE_512] = 512,
+ [GXIO_MPIPE_BUFFER_SIZE_1024] = 1024,
+ [GXIO_MPIPE_BUFFER_SIZE_1664] = 1664,
+ [GXIO_MPIPE_BUFFER_SIZE_4096] = 4096,
+ [GXIO_MPIPE_BUFFER_SIZE_10368] = 10368,
+ [GXIO_MPIPE_BUFFER_SIZE_16384] = 16384,
+};
+
+static gxio_mpipe_context_t *
+mpipe_context(int instance)
+{
+ if (instance < 0 || instance >= mpipe_instances)
+ return NULL;
+ return &mpipe_contexts[instance].context;
+}
+
+static int mpipe_channel_config(int instance, int channel,
+ struct mpipe_channel_config *config)
+{
+ struct mpipe_channel_config *data;
+ struct mpipe_context *context;
+ gxio_mpipe_rules_t rules;
+ int idx, rc = 0;
+
+ if (instance < 0 || instance >= mpipe_instances ||
+ channel < 0 || channel >= MPIPE_MAX_CHANNELS)
+ return -EINVAL;
+
+ context = &mpipe_contexts[instance];
+
+ rte_spinlock_lock(&context->lock);
+
+ gxio_mpipe_rules_init(&rules, &context->context);
+
+ for (idx = 0; idx < MPIPE_MAX_CHANNELS; idx++) {
+ data = (channel == idx) ? config : &context->channels[idx];
+
+ if (!data->enable)
+ continue;
+
+ rc = gxio_mpipe_rules_begin(&rules, data->first_bucket,
+ data->num_buckets, &data->stacks);
+ if (rc < 0) {
+ goto done;
+ }
+
+ rc = gxio_mpipe_rules_add_channel(&rules, idx);
+ if (rc < 0) {
+ goto done;
+ }
+
+ rc = gxio_mpipe_rules_set_headroom(&rules, data->head_room);
+ if (rc < 0) {
+ goto done;
+ }
+ }
+
+ rc = gxio_mpipe_rules_commit(&rules);
+ if (rc == 0) {
+ memcpy(&context->channels[channel], config, sizeof(*config));
+ }
+
+done:
+ rte_spinlock_unlock(&context->lock);
+
+ return rc;
+}
+
+static int
+mpipe_get_size_index(int *array, int count, int size,
+ bool roundup)
+{
+ int i, last = -1;
+
+ for (i = 0; i < count && array[i] < size; i++) {
+ if (array[i])
+ last = i;
+ }
+
+ if (roundup)
+ return i < count ? (int)i : -ENOENT;
+ else
+ return last >= 0 ? last : -ENOENT;
+}
+
+static int
+mpipe_calc_size(int *array, int count, int size)
+{
+ int index = mpipe_get_size_index(array, count, size, 1);
+ return index < 0 ? index : array[index];
+}
+
+static int mpipe_equeue_size(int size)
+{
+ int result;
+ result = mpipe_calc_size(mpipe_equeue_sizes,
+ RTE_DIM(mpipe_equeue_sizes), size);
+ return result;
+}
+
+static int mpipe_iqueue_size(int size)
+{
+ int result;
+ result = mpipe_calc_size(mpipe_iqueue_sizes,
+ RTE_DIM(mpipe_iqueue_sizes), size);
+ return result;
+}
+
+static int mpipe_buffer_size_index(int size)
+{
+ int result;
+ result = mpipe_get_size_index(mpipe_buffer_sizes,
+ RTE_DIM(mpipe_buffer_sizes), size, 0);
+ return result;
+}
+
+static inline int
+mpipe_dev_atomic_read_link_status(struct rte_eth_dev *dev,
+ struct rte_eth_link *link)
+{
+ struct rte_eth_link *dst = link;
+ struct rte_eth_link *src = &(dev->data->dev_link);
+
+ if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
+ *(uint64_t *)src) == 0)
+ return -1;
+
+ return 0;
+}
+
+static inline int
+mpipe_dev_atomic_write_link_status(struct rte_eth_dev *dev,
+ struct rte_eth_link *link)
+{
+ struct rte_eth_link *dst = &(dev->data->dev_link);
+ struct rte_eth_link *src = link;
+
+ if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
+ *(uint64_t *)src) == 0)
+ return -1;
+
+ return 0;
+}
+
+static void
+mpipe_infos_get(struct rte_eth_dev *dev __rte_unused,
+ struct rte_eth_dev_info *dev_info)
+{
+ dev_info->min_rx_bufsize = 128;
+ dev_info->max_rx_pktlen = 1518;
+ dev_info->max_tx_queues = MPIPE_TX_MAX_QUEUES;
+ dev_info->max_rx_queues = MPIPE_RX_MAX_QUEUES;
+ dev_info->max_mac_addrs = 1;
+ dev_info->rx_offload_capa = 0;
+ dev_info->tx_offload_capa = 0;
+}
+
+static int
+mpipe_configure(struct rte_eth_dev *dev)
+{
+ struct mpipe_dev_priv *priv = mpipe_priv(dev);
+
+ if (dev->data->nb_tx_queues > MPIPE_TX_MAX_QUEUES) {
+ RTE_LOG(ERR, PMD, "%s: Too many tx queues: %d > %d\n",
+ mpipe_name(priv), dev->data->nb_tx_queues,
+ MPIPE_TX_MAX_QUEUES);
+ return -EINVAL;
+ }
+ priv->nb_tx_queues = dev->data->nb_tx_queues;
+
+ if (dev->data->nb_rx_queues > MPIPE_RX_MAX_QUEUES) {
+ RTE_LOG(ERR, PMD, "%s: Too many rx queues: %d > %d\n",
+ mpipe_name(priv), dev->data->nb_rx_queues,
+ MPIPE_RX_MAX_QUEUES);
+ }
+ priv->nb_rx_queues = dev->data->nb_rx_queues;
+
+ return 0;
+}
+
+static inline int
+mpipe_link_compare(struct rte_eth_link *link1,
+ struct rte_eth_link *link2)
+{
+ return ((*(uint64_t *)link1 == *(uint64_t *)link2)
+ ? -1 : 0);
+}
+
+static int
+mpipe_link_update(struct rte_eth_dev *dev, int wait_to_complete)
+{
+ struct mpipe_dev_priv *priv = mpipe_priv(dev);
+ struct rte_eth_link old, new;
+ int64_t state, speed;
+ int count, rc;
+
+ memset(&old, 0, sizeof(old));
+ memset(&new, 0, sizeof(new));
+ mpipe_dev_atomic_read_link_status(dev, &old);
+
+ for (count = 0, rc = 0; count < MPIPE_LINK_UPDATE_TIMEOUT; count++) {
+ if (!priv->initialized)
+ break;
+
+ state = gxio_mpipe_link_get_attr(&priv->link,
+ GXIO_MPIPE_LINK_CURRENT_STATE);
+ if (state < 0)
+ break;
+
+ speed = state & GXIO_MPIPE_LINK_SPEED_MASK;
+
+ if (speed == GXIO_MPIPE_LINK_1G) {
+ new.link_speed = ETH_LINK_SPEED_1000;
+ new.link_duplex = ETH_LINK_FULL_DUPLEX;
+ new.link_status = 1;
+ } else if (speed == GXIO_MPIPE_LINK_10G) {
+ new.link_speed = ETH_LINK_SPEED_10000;
+ new.link_duplex = ETH_LINK_FULL_DUPLEX;
+ new.link_status = 1;
+ }
+
+ rc = mpipe_link_compare(&old, &new);
+ if (rc == 0 || !wait_to_complete)
+ break;
+
+ rte_delay_us(MPIPE_LINK_UPDATE_INTERVAL);
+ }
+
+ mpipe_dev_atomic_write_link_status(dev, &new);
+ return rc;
+}
+
+static int
+mpipe_set_link(struct rte_eth_dev *dev, int up)
+{
+ struct mpipe_dev_priv *priv = mpipe_priv(dev);
+ int rc;
+
+ rc = gxio_mpipe_link_set_attr(&priv->link,
+ GXIO_MPIPE_LINK_DESIRED_STATE,
+ up ? GXIO_MPIPE_LINK_ANYSPEED : 0);
+ if (rc < 0) {
+ RTE_LOG(ERR, PMD, "%s: Failed to set link %s.\n",
+ mpipe_name(priv), up ? "up" : "down");
+ } else {
+ mpipe_link_update(dev, 0);
+ }
+
+ return rc;
+}
+
+static int
+mpipe_set_link_up(struct rte_eth_dev *dev)
+{
+ return mpipe_set_link(dev, 1);
+}
+
+static int
+mpipe_set_link_down(struct rte_eth_dev *dev)
+{
+ return mpipe_set_link(dev, 0);
+}
+
+static inline void
+mpipe_dp_enter(struct mpipe_dev_priv *priv)
+{
+ __insn_mtspr(SPR_DSTREAM_PF, 0);
+ rte_atomic32_inc(&priv->dp_count);
+}
+
+static inline void
+mpipe_dp_exit(struct mpipe_dev_priv *priv)
+{
+ rte_atomic32_dec(&priv->dp_count);
+}
+
+static inline void
+mpipe_dp_wait(struct mpipe_dev_priv *priv)
+{
+ while (rte_atomic32_read(&priv->dp_count) != 0) {
+ rte_pause();
+ }
+}
+
+static inline struct rte_mbuf *
+mpipe_recv_mbuf(struct mpipe_dev_priv *priv, gxio_mpipe_idesc_t *idesc,
+ int in_port)
+{
+ void *va = gxio_mpipe_idesc_get_va(idesc);
+ uint16_t size = gxio_mpipe_idesc_get_xfer_size(idesc);
+ struct rte_mbuf *mbuf = RTE_PTR_SUB(va, priv->rx_offset);
+
+ rte_pktmbuf_reset(mbuf);
+ mbuf->data_off = (uintptr_t)va - (uintptr_t)mbuf->buf_addr;
+ mbuf->port = in_port;
+ mbuf->data_len = size;
+ mbuf->pkt_len = size;
+ mbuf->hash.rss = gxio_mpipe_idesc_get_flow_hash(idesc);
+
+ PMD_DEBUG_RX("%s: RX mbuf %p, buffer %p, buf_addr %p, size %d\n",
+ mpipe_name(priv), mbuf, va, mbuf->buf_addr, size);
+
+ return mbuf;
+}
+
+static inline void
+mpipe_recv_push(struct mpipe_dev_priv *priv, struct rte_mbuf *mbuf)
+{
+ const int offset = RTE_PKTMBUF_HEADROOM + MPIPE_RX_IP_ALIGN;
+ void *buf_addr = RTE_PTR_ADD(mbuf->buf_addr, offset);
+
+ gxio_mpipe_push_buffer(priv->context, priv->stack, buf_addr);
+ PMD_DEBUG_RX("%s: Pushed mbuf %p, buffer %p into stack %d\n",
+ mpipe_name(priv), mbuf, buf_addr, priv->stack);
+}
+
+static inline void
+mpipe_recv_fill_stack(struct mpipe_dev_priv *priv, int count)
+{
+ struct rte_mbuf *mbuf;
+ int i;
+
+ for (i = 0; i < count; i++) {
+ mbuf = __rte_mbuf_raw_alloc(priv->rx_mpool);
+ if (!mbuf)
+ break;
+ mpipe_recv_push(priv, mbuf);
+ }
+
+ priv->rx_buffers += count;
+ PMD_DEBUG_RX("%s: Filled %d/%d buffers\n", mpipe_name(priv), i, count);
+}
+
+static inline void
+mpipe_recv_flush_stack(struct mpipe_dev_priv *priv)
+{
+ const int offset = priv->rx_offset & ~RTE_MEMPOOL_ALIGN_MASK;
+ uint8_t in_port = priv->port_id;
+ struct rte_mbuf *mbuf;
+ unsigned count;
+ void *va;
+
+ for (count = 0; count < priv->rx_buffers; count++) {
+ va = gxio_mpipe_pop_buffer(priv->context, priv->stack);
+ if (!va)
+ break;
+ mbuf = RTE_PTR_SUB(va, offset);
+
+ PMD_DEBUG_RX("%s: Flushing mbuf %p, va %p\n",
+ mpipe_name(priv), mbuf, va);
+
+ mbuf->data_off = (uintptr_t)va - (uintptr_t)mbuf->buf_addr;
+ mbuf->refcnt = 1;
+ mbuf->nb_segs = 1;
+ mbuf->port = in_port;
+ mbuf->packet_type = 0;
+ mbuf->data_len = 0;
+ mbuf->pkt_len = 0;
+
+ __rte_mbuf_raw_free(mbuf);
+ }
+
+ PMD_DEBUG_RX("%s: Returned %d/%d buffers\n",
+ mpipe_name(priv), count, priv->rx_buffers);
+ priv->rx_buffers -= count;
+}
+
+static void
+mpipe_register_segment(struct mpipe_dev_priv *priv, const struct rte_memseg *ms)
+{
+ size_t size = ms->hugepage_sz;
+ uint8_t *addr, *end;
+ int rc;
+
+ for (addr = ms->addr, end = addr + ms->len; addr < end; addr += size) {
+ rc = gxio_mpipe_register_page(priv->context, priv->stack, addr,
+ size, 0);
+ if (rc < 0)
+ break;
+ }
+
+ if (rc < 0) {
+ RTE_LOG(ERR, PMD, "%s: Could not register memseg @%p, %d.\n",
+ mpipe_name(priv), ms->addr, rc);
+ } else {
+ RTE_LOG(DEBUG, PMD, "%s: Registered segment %p - %p\n",
+ mpipe_name(priv), ms->addr,
+ RTE_PTR_ADD(ms->addr, ms->len - 1));
+ }
+}
+
+static int
+mpipe_recv_init(struct mpipe_dev_priv *priv)
+{
+ const struct rte_memseg *seg = rte_eal_get_physmem_layout();
+ size_t stack_size;
+ void *stack_mem;
+ int rc;
+
+ if (!priv->rx_mpool) {
+ RTE_LOG(ERR, PMD, "%s: No buffer pool.\n",
+ mpipe_name(priv));
+ return -ENODEV;
+ }
+
+ /* Allocate one NotifRing for each queue. */
+ rc = gxio_mpipe_alloc_notif_rings(priv->context, MPIPE_RX_MAX_QUEUES,
+ 0, 0);
+ if (rc < 0) {
+ RTE_LOG(ERR, PMD, "%s: Failed to allocate notif rings.\n",
+ mpipe_name(priv));
+ return rc;
+ }
+ priv->first_ring = rc;
+
+ /* Allocate a NotifGroup. */
+ rc = gxio_mpipe_alloc_notif_groups(priv->context, 1, 0, 0);
+ if (rc < 0) {
+ RTE_LOG(ERR, PMD, "%s: Failed to allocate rx group.\n",
+ mpipe_name(priv));
+ return rc;
+ }
+ priv->notif_group = rc;
+
+ /* Allocate required buckets. */
+ rc = gxio_mpipe_alloc_buckets(priv->context, MPIPE_RX_BUCKETS, 0, 0);
+ if (rc < 0) {
+ RTE_LOG(ERR, PMD, "%s: Failed to allocate buckets.\n",
+ mpipe_name(priv));
+ return rc;
+ }
+ priv->first_bucket = rc;
+
+ rc = gxio_mpipe_alloc_buffer_stacks(priv->context, 1, 0, 0);
+ if (rc < 0) {
+ RTE_LOG(ERR, PMD, "%s: Failed to allocate buffer stack.\n",
+ mpipe_name(priv));
+ return rc;
+ }
+ priv->stack = rc;
+
+ while (seg && seg->addr)
+ mpipe_register_segment(priv, seg++);
+
+ stack_size = gxio_mpipe_calc_buffer_stack_bytes(MPIPE_RX_STACK_SIZE);
+ stack_mem = rte_zmalloc(NULL, stack_size, 65536);
+ if (!stack_mem) {
+ RTE_LOG(ERR, PMD, "%s: Failed to allocate buffer memory.\n",
+ mpipe_name(priv));
+ return -ENOMEM;
+ } else {
+ RTE_LOG(DEBUG, PMD, "%s: Buffer stack memory %p - %p.\n",
+ mpipe_name(priv), stack_mem,
+ RTE_PTR_ADD(stack_mem, stack_size - 1));
+ }
+
+ rc = gxio_mpipe_init_buffer_stack(priv->context, priv->stack,
+ priv->rx_size_code, stack_mem,
+ stack_size, 0);
+ if (rc < 0) {
+ RTE_LOG(ERR, PMD, "%s: Failed to initialize buffer stack.\n",
+ mpipe_name(priv));
+ return rc;
+ }
+
+ return 0;
+}
+
+static int
+mpipe_xmit_init(struct mpipe_dev_priv *priv)
+{
+ size_t ring_size;
+ void *ring_mem;
+ int rc;
+
+ /* Allocate eDMA ring. */
+ rc = gxio_mpipe_alloc_edma_rings(priv->context, 1, 0, 0);
+ if (rc < 0) {
+ RTE_LOG(ERR, PMD, "%s: Failed to alloc tx ring.\n",
+ mpipe_name(priv));
+ return rc;
+ }
+ priv->ering = rc;
+
+ rc = mpipe_equeue_size(MPIPE_TX_DESCS);
+ if (rc < 0) {
+ RTE_LOG(ERR, PMD, "%s: Cannot allocate %d equeue descs.\n",
+ mpipe_name(priv), (int)MPIPE_TX_DESCS);
+ return -ENOMEM;
+ }
+ priv->equeue_size = rc;
+
+ /* Initialize completion array. */
+ ring_size = sizeof(priv->tx_comps[0]) * priv->equeue_size;
+ priv->tx_comps = rte_zmalloc(NULL, ring_size, RTE_CACHE_LINE_SIZE);
+ if (!priv->tx_comps) {
+ RTE_LOG(ERR, PMD, "%s: Failed to allocate egress comps.\n",
+ mpipe_name(priv));
+ return -ENOMEM;
+ }
+
+ /* Allocate eDMA ring memory. */
+ ring_size = sizeof(gxio_mpipe_edesc_t) * priv->equeue_size;
+ ring_mem = rte_zmalloc(NULL, ring_size, ring_size);
+ if (!ring_mem) {
+ RTE_LOG(ERR, PMD, "%s: Failed to allocate egress descs.\n",
+ mpipe_name(priv));
+ return -ENOMEM;
+ } else {
+ RTE_LOG(DEBUG, PMD, "%s: eDMA ring memory %p - %p.\n",
+ mpipe_name(priv), ring_mem,
+ RTE_PTR_ADD(ring_mem, ring_size - 1));
+ }
+
+ /* Initialize eDMA ring. */
+ rc = gxio_mpipe_equeue_init(&priv->equeue, priv->context, priv->ering,
+ priv->channel, ring_mem, ring_size, 0);
+ if (rc < 0) {
+ RTE_LOG(ERR, PMD, "%s: Failed to init equeue\n",
+ mpipe_name(priv));
+ return rc;
+ }
+
+ return 0;
+}
+
+static int
+mpipe_link_init(struct mpipe_dev_priv *priv)
+{
+ int rc;
+
+ /* Open the link. */
+ rc = gxio_mpipe_link_open(&priv->link, priv->context,
+ mpipe_name(priv), GXIO_MPIPE_LINK_AUTO_NONE);
+ if (rc < 0) {
+ RTE_LOG(ERR, PMD, "%s: Failed to open link.\n",
+ mpipe_name(priv));
+ return rc;
+ }
+
+ /* Get the channel index. */
+ rc = gxio_mpipe_link_channel(&priv->link);
+ if (rc < 0) {
+ RTE_LOG(ERR, PMD, "%s: Bad channel\n",
+ mpipe_name(priv));
+ return rc;
+ }
+ priv->channel = rc;
+
+ return 0;
+}
+
+static int
+mpipe_init(struct mpipe_dev_priv *priv)
+{
+ int rc;
+
+ if (priv->initialized)
+ return 0;
+
+ rc = mpipe_link_init(priv);
+ if (rc < 0) {
+ RTE_LOG(ERR, PMD, "%s: Failed to init link.\n",
+ mpipe_name(priv));
+ return rc;
+ }
+
+ rc = mpipe_recv_init(priv);
+ if (rc < 0) {
+ RTE_LOG(ERR, PMD, "%s: Failed to init rx.\n",
+ mpipe_name(priv));
+ return rc;
+ }
+
+ rc = mpipe_xmit_init(priv);
+ if (rc < 0) {
+ RTE_LOG(ERR, PMD, "%s: Failed to init tx.\n",
+ mpipe_name(priv));
+ rte_free(priv);
+ return rc;
+ }
+
+ priv->initialized = 1;
+
+ return 0;
+}
+
+static int
+mpipe_start(struct rte_eth_dev *dev)
+{
+ struct mpipe_dev_priv *priv = mpipe_priv(dev);
+ struct mpipe_channel_config config;
+ struct mpipe_rx_queue *rx_queue;
+ struct rte_eth_link eth_link;
+ unsigned queue, buffers = 0;
+ size_t ring_size;
+ void *ring_mem;
+ int rc;
+
+ memset(ð_link, 0, sizeof(eth_link));
+ mpipe_dev_atomic_write_link_status(dev, ð_link);
+
+ rc = mpipe_init(priv);
+ if (rc < 0)
+ return rc;
+
+ /* Initialize NotifRings. */
+ for (queue = 0; queue < priv->nb_rx_queues; queue++) {
+ rx_queue = mpipe_rx_queue(priv, queue);
+ ring_size = rx_queue->q.nb_desc * sizeof(gxio_mpipe_idesc_t);
+
+ ring_mem = rte_malloc(NULL, ring_size, ring_size);
+ if (!ring_mem) {
+ RTE_LOG(ERR, PMD, "%s: Failed to alloc rx descs.\n",
+ mpipe_name(priv));
+ return -ENOMEM;
+ } else {
+ RTE_LOG(DEBUG, PMD, "%s: iDMA ring %d memory %p - %p.\n",
+ mpipe_name(priv), queue, ring_mem,
+ RTE_PTR_ADD(ring_mem, ring_size - 1));
+ }
+
+ rc = gxio_mpipe_iqueue_init(&rx_queue->iqueue, priv->context,
+ priv->first_ring + queue, ring_mem,
+ ring_size, 0);
+ if (rc < 0) {
+ RTE_LOG(ERR, PMD, "%s: Failed to init rx queue.\n",
+ mpipe_name(priv));
+ return rc;
+ }
+
+ rx_queue->rx_ring_mem = ring_mem;
+ buffers += rx_queue->q.nb_desc;
+ }
+
+ /* Initialize ingress NotifGroup and buckets. */
+ rc = gxio_mpipe_init_notif_group_and_buckets(priv->context,
+ priv->notif_group, priv->first_ring, priv->nb_rx_queues,
+ priv->first_bucket, MPIPE_RX_BUCKETS,
+ GXIO_MPIPE_BUCKET_STATIC_FLOW_AFFINITY);
+ if (rc < 0) {
+ RTE_LOG(ERR, PMD, "%s: Failed to init group and buckets.\n",
+ mpipe_name(priv));
+ return rc;
+ }
+
+ /* Configure the classifier to deliver packets from this port. */
+ config.enable = 1;
+ config.first_bucket = priv->first_bucket;
+ config.num_buckets = MPIPE_RX_BUCKETS;
+ memset(&config.stacks, 0xff, sizeof(config.stacks));
+ config.stacks.stacks[priv->rx_size_code] = priv->stack;
+ config.head_room = priv->rx_offset & RTE_MEMPOOL_ALIGN_MASK;
+
+ rc = mpipe_channel_config(priv->instance, priv->channel,
+ &config);
+ if (rc < 0) {
+ RTE_LOG(ERR, PMD, "%s: Failed to setup classifier.\n",
+ mpipe_name(priv));
+ return rc;
+ }
+
+ /* Fill empty buffers into the buffer stack. */
+ mpipe_recv_fill_stack(priv, buffers);
+
+ /* Bring up the link. */
+ mpipe_set_link_up(dev);
+
+ /* Start xmit/recv on queues. */
+ for (queue = 0; queue < priv->nb_tx_queues; queue++)
+ mpipe_tx_queue(priv, queue)->q.link_status = 1;
+ for (queue = 0; queue < priv->nb_rx_queues; queue++)
+ mpipe_rx_queue(priv, queue)->q.link_status = 1;
+ priv->running = 1;
+
+ return 0;
+}
+
+static void
+mpipe_stop(struct rte_eth_dev *dev)
+{
+ struct mpipe_dev_priv *priv = mpipe_priv(dev);
+ struct mpipe_channel_config config;
+ unsigned queue;
+ int rc;
+
+ for (queue = 0; queue < priv->nb_tx_queues; queue++)
+ mpipe_tx_queue(priv, queue)->q.link_status = 0;
+ for (queue = 0; queue < priv->nb_rx_queues; queue++)
+ mpipe_rx_queue(priv, queue)->q.link_status = 0;
+
+ /* Make sure the link_status writes land. */
+ rte_wmb();
+
+ /*
+ * Wait for link_status change to register with straggling datapath
+ * threads.
+ */
+ mpipe_dp_wait(priv);
+
+ /* Bring down the link. */
+ mpipe_set_link_down(dev);
+
+ /* Remove classifier rules. */
+ memset(&config, 0, sizeof(config));
+ rc = mpipe_channel_config(priv->instance, priv->channel,
+ &config);
+ if (rc < 0) {
+ RTE_LOG(ERR, PMD, "%s: Failed to stop classifier.\n",
+ mpipe_name(priv));
+ }
+
+ /* Flush completed xmit packets. */
+ mpipe_xmit_flush(priv);
+
+ /* Flush buffer stacks. */
+ mpipe_recv_flush(priv);
+
+ priv->running = 0;
+}
+
+static void
+mpipe_close(struct rte_eth_dev *dev)
+{
+ struct mpipe_dev_priv *priv = mpipe_priv(dev);
+ if (priv->running)
+ mpipe_stop(dev);
+}
+
+static void
+mpipe_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
+{
+ struct mpipe_dev_priv *priv = mpipe_priv(dev);
+ struct mpipe_tx_queue *tx_queue;
+ struct mpipe_rx_queue *rx_queue;
+ unsigned i;
+ uint16_t idx;
+
+ memset(stats, 0, sizeof(*stats));
+
+ for (i = 0; i < priv->nb_tx_queues; i++) {
+ tx_queue = mpipe_tx_queue(priv, i);
+
+ stats->opackets += tx_queue->q.stats.packets;
+ stats->obytes += tx_queue->q.stats.bytes;
+ stats->oerrors += tx_queue->q.stats.errors;
+
+ idx = tx_queue->q.stat_idx;
+ if (idx != (uint16_t)-1) {
+ stats->q_opackets[idx] += tx_queue->q.stats.packets;
+ stats->q_obytes[idx] += tx_queue->q.stats.bytes;
+ stats->q_errors[idx] += tx_queue->q.stats.errors;
+ }
+ }
+
+ for (i = 0; i < priv->nb_rx_queues; i++) {
+ rx_queue = mpipe_rx_queue(priv, i);
+
+ stats->ipackets += rx_queue->q.stats.packets;
+ stats->ibytes += rx_queue->q.stats.bytes;
+ stats->ierrors += rx_queue->q.stats.errors;
+ stats->rx_nombuf += rx_queue->q.stats.nomem;
+
+ idx = rx_queue->q.stat_idx;
+ if (idx != (uint16_t)-1) {
+ stats->q_ipackets[idx] += rx_queue->q.stats.packets;
+ stats->q_ibytes[idx] += rx_queue->q.stats.bytes;
+ stats->q_errors[idx] += rx_queue->q.stats.errors;
+ }
+ }
+}
+
+static void
+mpipe_stats_reset(struct rte_eth_dev *dev)
+{
+ struct mpipe_dev_priv *priv = mpipe_priv(dev);
+ struct mpipe_tx_queue *tx_queue;
+ struct mpipe_rx_queue *rx_queue;
+ unsigned i;
+
+ for (i = 0; i < priv->nb_tx_queues; i++) {
+ tx_queue = mpipe_tx_queue(priv, i);
+ memset(&tx_queue->q.stats, 0, sizeof(tx_queue->q.stats));
+ }
+
+ for (i = 0; i < priv->nb_rx_queues; i++) {
+ rx_queue = mpipe_rx_queue(priv, i);
+ memset(&rx_queue->q.stats, 0, sizeof(rx_queue->q.stats));
+ }
+}
+
+static int
+mpipe_queue_stats_mapping_set(struct rte_eth_dev *dev, uint16_t queue_id,
+ uint8_t stat_idx, uint8_t is_rx)
+{
+ struct mpipe_dev_priv *priv = mpipe_priv(dev);
+
+ if (is_rx) {
+ priv->rx_stat_mapping[stat_idx] = queue_id;
+ } else {
+ priv->tx_stat_mapping[stat_idx] = queue_id;
+ }
+
+ return 0;
+}
+
+static int
+mpipe_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
+ uint16_t nb_desc, unsigned int socket_id __rte_unused,
+ const struct rte_eth_txconf *tx_conf __rte_unused)
+{
+ struct mpipe_tx_queue *tx_queue = dev->data->tx_queues[queue_idx];
+ struct mpipe_dev_priv *priv = mpipe_priv(dev);
+ uint16_t idx;
+
+ tx_queue = rte_realloc(tx_queue, sizeof(*tx_queue),
+ RTE_CACHE_LINE_SIZE);
+ if (!tx_queue) {
+ RTE_LOG(ERR, PMD, "%s: Failed to allocate TX queue.\n",
+ mpipe_name(priv));
+ return -ENOMEM;
+ }
+
+ memset(&tx_queue->q, 0, sizeof(tx_queue->q));
+ tx_queue->q.priv = priv;
+ tx_queue->q.queue_idx = queue_idx;
+ tx_queue->q.port_id = dev->data->port_id;
+ tx_queue->q.nb_desc = nb_desc;
+
+ tx_queue->q.stat_idx = -1;
+ for (idx = 0; idx < RTE_ETHDEV_QUEUE_STAT_CNTRS; idx++) {
+ if (priv->tx_stat_mapping[idx] == queue_idx)
+ tx_queue->q.stat_idx = idx;
+ }
+
+ dev->data->tx_queues[queue_idx] = tx_queue;
+
+ return 0;
+}
+
+static void
+mpipe_tx_queue_release(void *_txq)
+{
+ rte_free(_txq);
+}
+
+static int
+mpipe_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
+ uint16_t nb_desc, unsigned int socket_id __rte_unused,
+ const struct rte_eth_rxconf *rx_conf __rte_unused,
+ struct rte_mempool *mp)
+{
+ struct mpipe_rx_queue *rx_queue = dev->data->rx_queues[queue_idx];
+ struct mpipe_dev_priv *priv = mpipe_priv(dev);
+ uint16_t idx;
+ int size, rc;
+
+ rc = mpipe_iqueue_size(nb_desc);
+ if (rc < 0) {
+ RTE_LOG(ERR, PMD, "%s: Cannot allocate %d iqueue descs.\n",
+ mpipe_name(priv), (int)nb_desc);
+ return -ENOMEM;
+ }
+
+ if (rc != nb_desc) {
+ RTE_LOG(WARNING, PMD, "%s: Extending RX descs from %d to %d.\n",
+ mpipe_name(priv), (int)nb_desc, rc);
+ nb_desc = rc;
+ }
+
+ size = sizeof(*rx_queue);
+ rx_queue = rte_realloc(rx_queue, size, RTE_CACHE_LINE_SIZE);
+ if (!rx_queue) {
+ RTE_LOG(ERR, PMD, "%s: Failed to allocate RX queue.\n",
+ mpipe_name(priv));
+ return -ENOMEM;
+ }
+
+ memset(&rx_queue->q, 0, sizeof(rx_queue->q));
+ rx_queue->q.priv = priv;
+ rx_queue->q.nb_desc = nb_desc;
+ rx_queue->q.port_id = dev->data->port_id;
+ rx_queue->q.queue_idx = queue_idx;
+
+ if (!priv->rx_mpool) {
+ int size = (rte_pktmbuf_data_room_size(mp) -
+ RTE_PKTMBUF_HEADROOM -
+ MPIPE_RX_IP_ALIGN);
+
+ priv->rx_offset = (sizeof(struct rte_mbuf) +
+ rte_pktmbuf_priv_size(mp) +
+ RTE_PKTMBUF_HEADROOM +
+ MPIPE_RX_IP_ALIGN);
+ if (size < 0) {
+ RTE_LOG(ERR, PMD, "%s: Bad buffer size %d.\n",
+ mpipe_name(priv),
+ rte_pktmbuf_data_room_size(mp));
+ return -ENOMEM;
+ }
+
+ priv->rx_size_code = mpipe_buffer_size_index(size);
+ priv->rx_mpool = mp;
+ }
+
+ if (priv->rx_mpool != mp) {
+ RTE_LOG(WARNING, PMD, "%s: Ignoring multiple buffer pools.\n",
+ mpipe_name(priv));
+ }
+
+ rx_queue->q.stat_idx = -1;
+ for (idx = 0; idx < RTE_ETHDEV_QUEUE_STAT_CNTRS; idx++) {
+ if (priv->rx_stat_mapping[idx] == queue_idx)
+ rx_queue->q.stat_idx = idx;
+ }
+
+ dev->data->rx_queues[queue_idx] = rx_queue;
+
+ return 0;
+}
+
+static void
+mpipe_rx_queue_release(void *_rxq)
+{
+ rte_free(_rxq);
+}
+
+#define MPIPE_XGBE_ENA_HASH_MULTI \
+ (1UL << MPIPE_XAUI_RECEIVE_CONFIGURATION__ENA_HASH_MULTI_SHIFT)
+#define MPIPE_XGBE_ENA_HASH_UNI \
+ (1UL << MPIPE_XAUI_RECEIVE_CONFIGURATION__ENA_HASH_UNI_SHIFT)
+#define MPIPE_XGBE_COPY_ALL \
+ (1UL << MPIPE_XAUI_RECEIVE_CONFIGURATION__COPY_ALL_SHIFT)
+#define MPIPE_GBE_ENA_MULTI_HASH \
+ (1UL << MPIPE_GBE_NETWORK_CONFIGURATION__MULTI_HASH_ENA_SHIFT)
+#define MPIPE_GBE_ENA_UNI_HASH \
+ (1UL << MPIPE_GBE_NETWORK_CONFIGURATION__UNI_HASH_ENA_SHIFT)
+#define MPIPE_GBE_COPY_ALL \
+ (1UL << MPIPE_GBE_NETWORK_CONFIGURATION__COPY_ALL_SHIFT)
+
+static void
+mpipe_promiscuous_enable(struct rte_eth_dev *dev)
+{
+ struct mpipe_dev_priv *priv = mpipe_priv(dev);
+ int64_t reg;
+ int addr;
+
+ if (priv->is_xaui) {
+ addr = MPIPE_XAUI_RECEIVE_CONFIGURATION;
+ reg = gxio_mpipe_link_mac_rd(&priv->link, addr);
+ reg &= ~MPIPE_XGBE_ENA_HASH_MULTI;
+ reg &= ~MPIPE_XGBE_ENA_HASH_UNI;
+ reg |= MPIPE_XGBE_COPY_ALL;
+ gxio_mpipe_link_mac_wr(&priv->link, addr, reg);
+ } else {
+ addr = MPIPE_GBE_NETWORK_CONFIGURATION;
+ reg = gxio_mpipe_link_mac_rd(&priv->link, addr);
+ reg &= ~MPIPE_GBE_ENA_MULTI_HASH;
+ reg &= ~MPIPE_GBE_ENA_UNI_HASH;
+ reg |= MPIPE_GBE_COPY_ALL;
+ gxio_mpipe_link_mac_wr(&priv->link, addr, reg);
+ }
+}
+
+static void
+mpipe_promiscuous_disable(struct rte_eth_dev *dev)
+{
+ struct mpipe_dev_priv *priv = mpipe_priv(dev);
+ int64_t reg;
+ int addr;
+
+ if (priv->is_xaui) {
+ addr = MPIPE_XAUI_RECEIVE_CONFIGURATION;
+ reg = gxio_mpipe_link_mac_rd(&priv->link, addr);
+ reg |= MPIPE_XGBE_ENA_HASH_MULTI;
+ reg |= MPIPE_XGBE_ENA_HASH_UNI;
+ reg &= ~MPIPE_XGBE_COPY_ALL;
+ gxio_mpipe_link_mac_wr(&priv->link, addr, reg);
+ } else {
+ addr = MPIPE_GBE_NETWORK_CONFIGURATION;
+ reg = gxio_mpipe_link_mac_rd(&priv->link, addr);
+ reg |= MPIPE_GBE_ENA_MULTI_HASH;
+ reg |= MPIPE_GBE_ENA_UNI_HASH;
+ reg &= ~MPIPE_GBE_COPY_ALL;
+ gxio_mpipe_link_mac_wr(&priv->link, addr, reg);
+ }
+}
+
+static struct eth_dev_ops mpipe_dev_ops = {
+ .dev_infos_get = mpipe_infos_get,
+ .dev_configure = mpipe_configure,
+ .dev_start = mpipe_start,
+ .dev_stop = mpipe_stop,
+ .dev_close = mpipe_close,
+ .stats_get = mpipe_stats_get,
+ .stats_reset = mpipe_stats_reset,
+ .queue_stats_mapping_set = mpipe_queue_stats_mapping_set,
+ .tx_queue_setup = mpipe_tx_queue_setup,
+ .rx_queue_setup = mpipe_rx_queue_setup,
+ .tx_queue_release = mpipe_tx_queue_release,
+ .rx_queue_release = mpipe_rx_queue_release,
+ .link_update = mpipe_link_update,
+ .dev_set_link_up = mpipe_set_link_up,
+ .dev_set_link_down = mpipe_set_link_down,
+ .promiscuous_enable = mpipe_promiscuous_enable,
+ .promiscuous_disable = mpipe_promiscuous_disable,
+};
+
+static inline void
+mpipe_xmit_null(struct mpipe_dev_priv *priv, int64_t start, int64_t end)
+{
+ gxio_mpipe_edesc_t null_desc = { { .bound = 1, .ns = 1 } };
+ gxio_mpipe_equeue_t *equeue = &priv->equeue;
+ int64_t slot;
+
+ for (slot = start; slot < end; slot++) {
+ gxio_mpipe_equeue_put_at(equeue, null_desc, slot);
+ }
+}
+
+static void
+mpipe_xmit_flush(struct mpipe_dev_priv *priv)
+{
+ gxio_mpipe_equeue_t *equeue = &priv->equeue;
+ int64_t slot;
+
+ /* Post a dummy descriptor and wait for its return. */
+ slot = gxio_mpipe_equeue_reserve(equeue, 1);
+ if (slot < 0) {
+ RTE_LOG(ERR, PMD, "%s: Failed to reserve stop slot.\n",
+ mpipe_name(priv));
+ return;
+ }
+
+ mpipe_xmit_null(priv, slot, slot + 1);
+
+ while (!gxio_mpipe_equeue_is_complete(equeue, slot, 1)) {
+ rte_pause();
+ }
+
+ for (slot = 0; slot < priv->equeue_size; slot++) {
+ if (priv->tx_comps[slot])
+ rte_pktmbuf_free_seg(priv->tx_comps[slot]);
+ }
+}
+
+static void
+mpipe_recv_flush(struct mpipe_dev_priv *priv)
+{
+ uint8_t in_port = priv->port_id;
+ struct mpipe_rx_queue *rx_queue;
+ gxio_mpipe_iqueue_t *iqueue;
+ gxio_mpipe_idesc_t idesc;
+ struct rte_mbuf *mbuf;
+ int retries = 0;
+ unsigned queue;
+
+ do {
+ mpipe_recv_flush_stack(priv);
+
+ /* Flush packets sitting in recv queues. */
+ for (queue = 0; queue < priv->nb_rx_queues; queue++) {
+ rx_queue = mpipe_rx_queue(priv, queue);
+ iqueue = &rx_queue->iqueue;
+ while (gxio_mpipe_iqueue_try_get(iqueue, &idesc) >= 0) {
+ mbuf = mpipe_recv_mbuf(priv, &idesc, in_port);
+ rte_pktmbuf_free(mbuf);
+ priv->rx_buffers--;
+ }
+ rte_free(rx_queue->rx_ring_mem);
+ }
+ } while (retries++ < 10 && priv->rx_buffers);
+
+ if (priv->rx_buffers) {
+ RTE_LOG(ERR, PMD, "%s: Leaked %d receive buffers.\n",
+ mpipe_name(priv), priv->rx_buffers);
+ } else {
+ PMD_DEBUG_RX("%s: Returned all receive buffers.\n",
+ mpipe_name(priv));
+ }
+}
+
+static inline uint16_t
+mpipe_do_xmit(struct mpipe_tx_queue *tx_queue, struct rte_mbuf **tx_pkts,
+ uint16_t nb_pkts)
+{
+ struct mpipe_dev_priv *priv = tx_queue->q.priv;
+ gxio_mpipe_equeue_t *equeue = &priv->equeue;
+ unsigned nb_bytes = 0;
+ unsigned nb_sent = 0;
+ int nb_slots, i;
+
+ PMD_DEBUG_TX("Trying to transmit %d packets on %s:%d.\n",
+ nb_pkts, mpipe_name(tx_queue->q.priv),
+ tx_queue->q.queue_idx);
+
+ /* Optimistic assumption that we need exactly one slot per packet. */
+ nb_slots = RTE_MIN(nb_pkts, MPIPE_TX_DESCS / 2);
+
+ do {
+ struct rte_mbuf *mbuf = NULL, *pkt = NULL;
+ int64_t slot;
+
+ /* Reserve eDMA ring slots. */
+ slot = gxio_mpipe_equeue_try_reserve_fast(equeue, nb_slots);
+ if (unlikely(slot < 0)) {
+ break;
+ }
+
+ for (i = 0; i < nb_slots; i++) {
+ unsigned idx = (slot + i) & (priv->equeue_size - 1);
+ rte_prefetch0(priv->tx_comps[idx]);
+ }
+
+ /* Fill up slots with descriptor and completion info. */
+ for (i = 0; i < nb_slots; i++) {
+ unsigned idx = (slot + i) & (priv->equeue_size - 1);
+ gxio_mpipe_edesc_t desc;
+ struct rte_mbuf *next;
+
+ /* Starting on a new packet? */
+ if (likely(!mbuf)) {
+ int room = nb_slots - i;
+
+ pkt = mbuf = tx_pkts[nb_sent];
+
+ /* Bail out if we run out of descs. */
+ if (unlikely(pkt->nb_segs > room))
+ break;
+
+ nb_sent++;
+ }
+
+ /* We have a segment to send. */
+ next = mbuf->next;
+
+ if (priv->tx_comps[idx])
+ rte_pktmbuf_free_seg(priv->tx_comps[idx]);
+
+ desc = (gxio_mpipe_edesc_t) { {
+ .va = rte_pktmbuf_mtod(mbuf, uintptr_t),
+ .xfer_size = rte_pktmbuf_data_len(mbuf),
+ .bound = next ? 0 : 1,
+ } };
+
+ nb_bytes += mbuf->data_len;
+ priv->tx_comps[idx] = mbuf;
+ gxio_mpipe_equeue_put_at(equeue, desc, slot + i);
+
+ PMD_DEBUG_TX("%s:%d: Sending packet %p, len %d\n",
+ mpipe_name(priv),
+ tx_queue->q.queue_idx,
+ rte_pktmbuf_mtod(mbuf, void *),
+ rte_pktmbuf_data_len(mbuf));
+
+ mbuf = next;
+ }
+
+ if (unlikely(nb_sent < nb_pkts)) {
+
+ /* Fill remaining slots with null descriptors. */
+ mpipe_xmit_null(priv, slot + i, slot + nb_slots);
+
+ /*
+ * Calculate exact number of descriptors needed for
+ * the next go around.
+ */
+ nb_slots = 0;
+ for (i = nb_sent; i < nb_pkts; i++) {
+ nb_slots += tx_pkts[i]->nb_segs;
+ }
+
+ nb_slots = RTE_MIN(nb_slots, MPIPE_TX_DESCS / 2);
+ }
+ } while (nb_sent < nb_pkts);
+
+ tx_queue->q.stats.packets += nb_sent;
+ tx_queue->q.stats.bytes += nb_bytes;
+
+ return nb_sent;
+}
+
+static inline uint16_t
+mpipe_do_recv(struct mpipe_rx_queue *rx_queue, struct rte_mbuf **rx_pkts,
+ uint16_t nb_pkts)
+{
+ struct mpipe_dev_priv *priv = rx_queue->q.priv;
+ gxio_mpipe_iqueue_t *iqueue = &rx_queue->iqueue;
+ gxio_mpipe_idesc_t *first_idesc, *idesc, *last_idesc;
+ uint8_t in_port = rx_queue->q.port_id;
+ const unsigned look_ahead = 8;
+ int room = nb_pkts, rc = 0;
+ unsigned nb_packets = 0;
+ unsigned nb_dropped = 0;
+ unsigned nb_nomem = 0;
+ unsigned nb_bytes = 0;
+ unsigned nb_descs, i;
+
+ while (room && !rc) {
+ if (rx_queue->avail_descs < room) {
+ rc = gxio_mpipe_iqueue_try_peek(iqueue,
+ &rx_queue->next_desc);
+ rx_queue->avail_descs = rc < 0 ? 0 : rc;
+ }
+
+ if (unlikely(!rx_queue->avail_descs)) {
+ break;
+ }
+
+ nb_descs = RTE_MIN(room, rx_queue->avail_descs);
+
+ first_idesc = rx_queue->next_desc;
+ last_idesc = first_idesc + nb_descs;
+
+ rx_queue->next_desc += nb_descs;
+ rx_queue->avail_descs -= nb_descs;
+
+ for (i = 1; i < look_ahead; i++) {
+ rte_prefetch0(first_idesc + i);
+ }
+
+ PMD_DEBUG_RX("%s:%d: Trying to receive %d packets\n",
+ mpipe_name(rx_queue->q.priv),
+ rx_queue->q.queue_idx,
+ nb_descs);
+
+ for (idesc = first_idesc; idesc < last_idesc; idesc++) {
+ struct rte_mbuf *mbuf;
+
+ PMD_DEBUG_RX("%s:%d: processing idesc %d/%d\n",
+ mpipe_name(priv),
+ rx_queue->q.queue_idx,
+ nb_packets, nb_descs);
+
+ rte_prefetch0(idesc + look_ahead);
+
+ PMD_DEBUG_RX("%s:%d: idesc %p, %s%s%s%s%s%s%s%s%s%s"
+ "size: %d, bkt: %d, chan: %d, ring: %d, sqn: %lu, va: %lu\n",
+ mpipe_name(priv),
+ rx_queue->q.queue_idx,
+ idesc,
+ idesc->me ? "me, " : "",
+ idesc->tr ? "tr, " : "",
+ idesc->ce ? "ce, " : "",
+ idesc->ct ? "ct, " : "",
+ idesc->cs ? "cs, " : "",
+ idesc->nr ? "nr, " : "",
+ idesc->sq ? "sq, " : "",
+ idesc->ts ? "ts, " : "",
+ idesc->ps ? "ps, " : "",
+ idesc->be ? "be, " : "",
+ idesc->l2_size,
+ idesc->bucket_id,
+ idesc->channel,
+ idesc->notif_ring,
+ (unsigned long)idesc->packet_sqn,
+ (unsigned long)idesc->va);
+
+ if (unlikely(gxio_mpipe_idesc_has_error(idesc))) {
+ nb_dropped++;
+ gxio_mpipe_iqueue_drop(iqueue, idesc);
+ PMD_DEBUG_RX("%s:%d: Descriptor error\n",
+ mpipe_name(rx_queue->q.priv),
+ rx_queue->q.queue_idx);
+ continue;
+ }
+
+ mbuf = __rte_mbuf_raw_alloc(priv->rx_mpool);
+ if (unlikely(!mbuf)) {
+ nb_nomem++;
+ gxio_mpipe_iqueue_drop(iqueue, idesc);
+ PMD_DEBUG_RX("%s:%d: RX alloc failure\n",
+ mpipe_name(rx_queue->q.priv),
+ rx_queue->q.queue_idx);
+ continue;
+ }
+
+ mpipe_recv_push(priv, mbuf);
+
+ /* Get and setup the mbuf for the received packet. */
+ mbuf = mpipe_recv_mbuf(priv, idesc, in_port);
+
+ /* Update results and statistics counters. */
+ rx_pkts[nb_packets] = mbuf;
+ nb_bytes += mbuf->pkt_len;
+ nb_packets++;
+ }
+
+ /*
+ * We release the ring in bursts, but do not track and release
+ * buckets. This therefore breaks dynamic flow affinity, but
+ * we always operate in static affinity mode, and so we're OK
+ * with this optimization.
+ */
+ gxio_mpipe_iqueue_advance(iqueue, nb_descs);
+ gxio_mpipe_credit(iqueue->context, iqueue->ring, -1, nb_descs);
+
+ /*
+ * Go around once more if we haven't yet peeked the queue, and
+ * if we have more room to receive.
+ */
+ room = nb_pkts - nb_packets;
+ }
+
+ rx_queue->q.stats.packets += nb_packets;
+ rx_queue->q.stats.bytes += nb_bytes;
+ rx_queue->q.stats.errors += nb_dropped;
+ rx_queue->q.stats.nomem += nb_nomem;
+
+ PMD_DEBUG_RX("%s:%d: RX: %d/%d pkts/bytes, %d/%d drops/nomem\n",
+ mpipe_name(rx_queue->q.priv), rx_queue->q.queue_idx,
+ nb_packets, nb_bytes, nb_dropped, nb_nomem);
+
+ return nb_packets;
+}
+
+static uint16_t
+mpipe_recv_pkts(void *_rxq, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
+{
+ struct mpipe_rx_queue *rx_queue = _rxq;
+ uint16_t result = 0;
+
+ if (rx_queue) {
+ mpipe_dp_enter(rx_queue->q.priv);
+ if (likely(rx_queue->q.link_status))
+ result = mpipe_do_recv(rx_queue, rx_pkts, nb_pkts);
+ mpipe_dp_exit(rx_queue->q.priv);
+ }
+
+ return result;
+}
+
+static uint16_t
+mpipe_xmit_pkts(void *_txq, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
+{
+ struct mpipe_tx_queue *tx_queue = _txq;
+ uint16_t result = 0;
+
+ if (tx_queue) {
+ mpipe_dp_enter(tx_queue->q.priv);
+ if (likely(tx_queue->q.link_status))
+ result = mpipe_do_xmit(tx_queue, tx_pkts, nb_pkts);
+ mpipe_dp_exit(tx_queue->q.priv);
+ }
+
+ return result;
+}
+
+static int
+mpipe_link_mac(const char *ifname, uint8_t *mac)
+{
+ int rc, idx;
+ char name[GXIO_MPIPE_LINK_NAME_LEN];
+
+ for (idx = 0, rc = 0; !rc; idx++) {
+ rc = gxio_mpipe_link_enumerate_mac(idx, name, mac);
+ if (!rc && !strncmp(name, ifname, GXIO_MPIPE_LINK_NAME_LEN))
+ return 0;
+ }
+ return -ENODEV;
+}
+
+static int
+rte_pmd_mpipe_devinit(const char *ifname,
+ const char *params __rte_unused)
+{
+ gxio_mpipe_context_t *context;
+ struct rte_eth_dev *eth_dev;
+ struct mpipe_dev_priv *priv;
+ int instance, rc;
+ uint8_t *mac;
+
+ /* Get the mPIPE instance that the device belongs to. */
+ instance = gxio_mpipe_link_instance(ifname);
+ context = mpipe_context(instance);
+ if (!context) {
+ RTE_LOG(ERR, PMD, "%s: No device for link.\n", ifname);
+ return -ENODEV;
+ }
+
+ priv = rte_zmalloc(NULL, sizeof(*priv), 0);
+ if (!priv) {
+ RTE_LOG(ERR, PMD, "%s: Failed to allocate priv.\n", ifname);
+ return -ENOMEM;
+ }
+
+ memset(&priv->tx_stat_mapping, 0xff, sizeof(priv->tx_stat_mapping));
+ memset(&priv->rx_stat_mapping, 0xff, sizeof(priv->rx_stat_mapping));
+ priv->context = context;
+ priv->instance = instance;
+ priv->is_xaui = (strncmp(ifname, "xgbe", 4) == 0);
+ priv->pci_dev.numa_node = instance;
+ priv->channel = -1;
+
+ mac = priv->mac_addr.addr_bytes;
+ rc = mpipe_link_mac(ifname, mac);
+ if (rc < 0) {
+ RTE_LOG(ERR, PMD, "%s: Failed to enumerate link.\n", ifname);
+ rte_free(priv);
+ return -ENODEV;
+ }
+
+ eth_dev = rte_eth_dev_allocate(ifname, RTE_ETH_DEV_VIRTUAL);
+ if (!eth_dev) {
+ RTE_LOG(ERR, PMD, "%s: Failed to allocate device.\n", ifname);
+ rte_free(priv);
+ }
+
+ RTE_LOG(INFO, PMD, "%s: Initialized mpipe device"
+ "(mac %02x:%02x:%02x:%02x:%02x:%02x).\n",
+ ifname, mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
+
+ priv->eth_dev = eth_dev;
+ priv->port_id = eth_dev->data->port_id;
+ eth_dev->data->dev_private = priv;
+ eth_dev->pci_dev = &priv->pci_dev;
+ eth_dev->data->mac_addrs = &priv->mac_addr;
+
+ eth_dev->dev_ops = &mpipe_dev_ops;
+ eth_dev->rx_pkt_burst = &mpipe_recv_pkts;
+ eth_dev->tx_pkt_burst = &mpipe_xmit_pkts;
+
+ return 0;
+}
+
+static struct rte_driver pmd_mpipe_xgbe_drv = {
+ .name = "xgbe",
+ .type = PMD_VDEV,
+ .init = rte_pmd_mpipe_devinit,
+};
+
+static struct rte_driver pmd_mpipe_gbe_drv = {
+ .name = "gbe",
+ .type = PMD_VDEV,
+ .init = rte_pmd_mpipe_devinit,
+};
+
+PMD_REGISTER_DRIVER(pmd_mpipe_xgbe_drv);
+PMD_REGISTER_DRIVER(pmd_mpipe_gbe_drv);
+
+static void __attribute__((constructor, used))
+mpipe_init_contexts(void)
+{
+ struct mpipe_context *context;
+ int rc, instance;
+
+ for (instance = 0; instance < GXIO_MPIPE_INSTANCE_MAX; instance++) {
+ context = &mpipe_contexts[instance];
+
+ rte_spinlock_init(&context->lock);
+ rc = gxio_mpipe_init(&context->context, instance);
+ if (rc < 0)
+ break;
+ }
+
+ mpipe_instances = instance;
+}
git.droids-corp.org / dpdk.git / commitdiff