--- /dev/null
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2019 Intel Corporation.
+ */
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+#include <rte_common.h>
+#include <rte_lcore.h>
+#include <rte_cycles.h>
+#include <rte_eal.h>
+#include <rte_log.h>
+#include <rte_pci.h>
+#include <rte_bus_pci.h>
+#include <rte_memzone.h>
+#include <rte_memcpy.h>
+#include <rte_rawdev.h>
+#include <rte_rawdev_pmd.h>
+
+#include "ntb.h"
+
+int ntb_logtype;
+
+static const struct rte_pci_id pci_id_ntb_map[] = {
+ { .vendor_id = 0, /* sentinel */ },
+};
+
+static void
+ntb_queue_conf_get(struct rte_rawdev *dev __rte_unused,
+ uint16_t queue_id __rte_unused,
+ rte_rawdev_obj_t queue_conf __rte_unused)
+{
+}
+
+static int
+ntb_queue_setup(struct rte_rawdev *dev __rte_unused,
+ uint16_t queue_id __rte_unused,
+ rte_rawdev_obj_t queue_conf __rte_unused)
+{
+ return 0;
+}
+
+static int
+ntb_queue_release(struct rte_rawdev *dev __rte_unused,
+ uint16_t queue_id __rte_unused)
+{
+ return 0;
+}
+
+static uint16_t
+ntb_queue_count(struct rte_rawdev *dev)
+{
+ struct ntb_hw *hw = dev->dev_private;
+ return hw->queue_pairs;
+}
+
+static int
+ntb_enqueue_bufs(struct rte_rawdev *dev,
+ struct rte_rawdev_buf **buffers,
+ unsigned int count,
+ rte_rawdev_obj_t context)
+{
+ RTE_SET_USED(dev);
+ RTE_SET_USED(buffers);
+ RTE_SET_USED(count);
+ RTE_SET_USED(context);
+
+ return 0;
+}
+
+static int
+ntb_dequeue_bufs(struct rte_rawdev *dev,
+ struct rte_rawdev_buf **buffers,
+ unsigned int count,
+ rte_rawdev_obj_t context)
+{
+ RTE_SET_USED(dev);
+ RTE_SET_USED(buffers);
+ RTE_SET_USED(count);
+ RTE_SET_USED(context);
+
+ return 0;
+}
+
+static void
+ntb_dev_info_get(struct rte_rawdev *dev, rte_rawdev_obj_t dev_info)
+{
+ struct ntb_hw *hw = dev->dev_private;
+ struct ntb_attr *ntb_attrs = dev_info;
+
+ strncpy(ntb_attrs[NTB_TOPO_ID].name, NTB_TOPO_NAME, NTB_ATTR_NAME_LEN);
+ switch (hw->topo) {
+ case NTB_TOPO_B2B_DSD:
+ strncpy(ntb_attrs[NTB_TOPO_ID].value, "B2B DSD",
+ NTB_ATTR_VAL_LEN);
+ break;
+ case NTB_TOPO_B2B_USD:
+ strncpy(ntb_attrs[NTB_TOPO_ID].value, "B2B USD",
+ NTB_ATTR_VAL_LEN);
+ break;
+ default:
+ strncpy(ntb_attrs[NTB_TOPO_ID].value, "Unsupported",
+ NTB_ATTR_VAL_LEN);
+ }
+
+ strncpy(ntb_attrs[NTB_LINK_STATUS_ID].name, NTB_LINK_STATUS_NAME,
+ NTB_ATTR_NAME_LEN);
+ snprintf(ntb_attrs[NTB_LINK_STATUS_ID].value, NTB_ATTR_VAL_LEN,
+ "%d", hw->link_status);
+
+ strncpy(ntb_attrs[NTB_SPEED_ID].name, NTB_SPEED_NAME,
+ NTB_ATTR_NAME_LEN);
+ snprintf(ntb_attrs[NTB_SPEED_ID].value, NTB_ATTR_VAL_LEN,
+ "%d", hw->link_speed);
+
+ strncpy(ntb_attrs[NTB_WIDTH_ID].name, NTB_WIDTH_NAME,
+ NTB_ATTR_NAME_LEN);
+ snprintf(ntb_attrs[NTB_WIDTH_ID].value, NTB_ATTR_VAL_LEN,
+ "%d", hw->link_width);
+
+ strncpy(ntb_attrs[NTB_MW_CNT_ID].name, NTB_MW_CNT_NAME,
+ NTB_ATTR_NAME_LEN);
+ snprintf(ntb_attrs[NTB_MW_CNT_ID].value, NTB_ATTR_VAL_LEN,
+ "%d", hw->mw_cnt);
+
+ strncpy(ntb_attrs[NTB_DB_CNT_ID].name, NTB_DB_CNT_NAME,
+ NTB_ATTR_NAME_LEN);
+ snprintf(ntb_attrs[NTB_DB_CNT_ID].value, NTB_ATTR_VAL_LEN,
+ "%d", hw->db_cnt);
+
+ strncpy(ntb_attrs[NTB_SPAD_CNT_ID].name, NTB_SPAD_CNT_NAME,
+ NTB_ATTR_NAME_LEN);
+ snprintf(ntb_attrs[NTB_SPAD_CNT_ID].value, NTB_ATTR_VAL_LEN,
+ "%d", hw->spad_cnt);
+}
+
+static int
+ntb_dev_configure(const struct rte_rawdev *dev __rte_unused,
+ rte_rawdev_obj_t config __rte_unused)
+{
+ return 0;
+}
+
+static int
+ntb_dev_start(struct rte_rawdev *dev)
+{
+ /* TODO: init queues and start queues. */
+ dev->started = 1;
+
+ return 0;
+}
+
+static void
+ntb_dev_stop(struct rte_rawdev *dev)
+{
+ /* TODO: stop rx/tx queues. */
+ dev->started = 0;
+}
+
+static int
+ntb_dev_close(struct rte_rawdev *dev)
+{
+ int ret = 0;
+
+ if (dev->started)
+ ntb_dev_stop(dev);
+
+ /* TODO: free queues. */
+
+ return ret;
+}
+
+static int
+ntb_dev_reset(struct rte_rawdev *rawdev __rte_unused)
+{
+ return 0;
+}
+
+static int
+ntb_attr_set(struct rte_rawdev *dev, const char *attr_name,
+ uint64_t attr_value)
+{
+ struct ntb_hw *hw = dev->dev_private;
+ int index = 0;
+
+ if (dev == NULL || attr_name == NULL) {
+ NTB_LOG(ERR, "Invalid arguments for setting attributes");
+ return -EINVAL;
+ }
+
+ if (!strncmp(attr_name, NTB_SPAD_USER, NTB_SPAD_USER_LEN)) {
+ if (hw->ntb_ops->spad_write == NULL)
+ return -ENOTSUP;
+ index = atoi(&attr_name[NTB_SPAD_USER_LEN]);
+ (*hw->ntb_ops->spad_write)(dev, hw->spad_user_list[index],
+ 1, attr_value);
+ NTB_LOG(INFO, "Set attribute (%s) Value (%" PRIu64 ")",
+ attr_name, attr_value);
+ return 0;
+ }
+
+ /* Attribute not found. */
+ NTB_LOG(ERR, "Attribute not found.");
+ return -EINVAL;
+}
+
+static int
+ntb_attr_get(struct rte_rawdev *dev, const char *attr_name,
+ uint64_t *attr_value)
+{
+ struct ntb_hw *hw = dev->dev_private;
+ int index = 0;
+
+ if (dev == NULL || attr_name == NULL || attr_value == NULL) {
+ NTB_LOG(ERR, "Invalid arguments for getting attributes");
+ return -EINVAL;
+ }
+
+ if (!strncmp(attr_name, NTB_TOPO_NAME, NTB_ATTR_NAME_LEN)) {
+ *attr_value = hw->topo;
+ NTB_LOG(INFO, "Attribute (%s) Value (%" PRIu64 ")",
+ attr_name, *attr_value);
+ return 0;
+ }
+
+ if (!strncmp(attr_name, NTB_LINK_STATUS_NAME, NTB_ATTR_NAME_LEN)) {
+ *attr_value = hw->link_status;
+ NTB_LOG(INFO, "Attribute (%s) Value (%" PRIu64 ")",
+ attr_name, *attr_value);
+ return 0;
+ }
+
+ if (!strncmp(attr_name, NTB_SPEED_NAME, NTB_ATTR_NAME_LEN)) {
+ *attr_value = hw->link_speed;
+ NTB_LOG(INFO, "Attribute (%s) Value (%" PRIu64 ")",
+ attr_name, *attr_value);
+ return 0;
+ }
+
+ if (!strncmp(attr_name, NTB_WIDTH_NAME, NTB_ATTR_NAME_LEN)) {
+ *attr_value = hw->link_width;
+ NTB_LOG(INFO, "Attribute (%s) Value (%" PRIu64 ")",
+ attr_name, *attr_value);
+ return 0;
+ }
+
+ if (!strncmp(attr_name, NTB_MW_CNT_NAME, NTB_ATTR_NAME_LEN)) {
+ *attr_value = hw->mw_cnt;
+ NTB_LOG(INFO, "Attribute (%s) Value (%" PRIu64 ")",
+ attr_name, *attr_value);
+ return 0;
+ }
+
+ if (!strncmp(attr_name, NTB_DB_CNT_NAME, NTB_ATTR_NAME_LEN)) {
+ *attr_value = hw->db_cnt;
+ NTB_LOG(INFO, "Attribute (%s) Value (%" PRIu64 ")",
+ attr_name, *attr_value);
+ return 0;
+ }
+
+ if (!strncmp(attr_name, NTB_SPAD_CNT_NAME, NTB_ATTR_NAME_LEN)) {
+ *attr_value = hw->spad_cnt;
+ NTB_LOG(INFO, "Attribute (%s) Value (%" PRIu64 ")",
+ attr_name, *attr_value);
+ return 0;
+ }
+
+ if (!strncmp(attr_name, NTB_SPAD_USER, NTB_SPAD_USER_LEN)) {
+ if (hw->ntb_ops->spad_read == NULL)
+ return -ENOTSUP;
+ index = atoi(&attr_name[NTB_SPAD_USER_LEN]);
+ *attr_value = (*hw->ntb_ops->spad_read)(dev,
+ hw->spad_user_list[index], 0);
+ NTB_LOG(INFO, "Attribute (%s) Value (%" PRIu64 ")",
+ attr_name, *attr_value);
+ return 0;
+ }
+
+ /* Attribute not found. */
+ NTB_LOG(ERR, "Attribute not found.");
+ return -EINVAL;
+}
+
+static int
+ntb_xstats_get(const struct rte_rawdev *dev __rte_unused,
+ const unsigned int ids[] __rte_unused,
+ uint64_t values[] __rte_unused,
+ unsigned int n __rte_unused)
+{
+ return 0;
+}
+
+static int
+ntb_xstats_get_names(const struct rte_rawdev *dev __rte_unused,
+ struct rte_rawdev_xstats_name *xstats_names __rte_unused,
+ unsigned int size __rte_unused)
+{
+ return 0;
+}
+
+static uint64_t
+ntb_xstats_get_by_name(const struct rte_rawdev *dev __rte_unused,
+ const char *name __rte_unused,
+ unsigned int *id __rte_unused)
+{
+ return 0;
+}
+
+static int
+ntb_xstats_reset(struct rte_rawdev *dev __rte_unused,
+ const uint32_t ids[] __rte_unused,
+ uint32_t nb_ids __rte_unused)
+{
+ return 0;
+}
+
+static const struct rte_rawdev_ops ntb_ops = {
+ .dev_info_get = ntb_dev_info_get,
+ .dev_configure = ntb_dev_configure,
+ .dev_start = ntb_dev_start,
+ .dev_stop = ntb_dev_stop,
+ .dev_close = ntb_dev_close,
+ .dev_reset = ntb_dev_reset,
+
+ .queue_def_conf = ntb_queue_conf_get,
+ .queue_setup = ntb_queue_setup,
+ .queue_release = ntb_queue_release,
+ .queue_count = ntb_queue_count,
+
+ .enqueue_bufs = ntb_enqueue_bufs,
+ .dequeue_bufs = ntb_dequeue_bufs,
+
+ .attr_get = ntb_attr_get,
+ .attr_set = ntb_attr_set,
+
+ .xstats_get = ntb_xstats_get,
+ .xstats_get_names = ntb_xstats_get_names,
+ .xstats_get_by_name = ntb_xstats_get_by_name,
+ .xstats_reset = ntb_xstats_reset,
+};
+
+static int
+ntb_init_hw(struct rte_rawdev *dev, struct rte_pci_device *pci_dev)
+{
+ struct ntb_hw *hw = dev->dev_private;
+ int ret;
+
+ hw->pci_dev = pci_dev;
+ hw->peer_dev_up = 0;
+ hw->link_status = NTB_LINK_DOWN;
+ hw->link_speed = NTB_SPEED_NONE;
+ hw->link_width = NTB_WIDTH_NONE;
+
+ switch (pci_dev->id.device_id) {
+ default:
+ NTB_LOG(ERR, "Not supported device.");
+ return -EINVAL;
+ }
+
+ if (hw->ntb_ops->ntb_dev_init == NULL)
+ return -ENOTSUP;
+ ret = (*hw->ntb_ops->ntb_dev_init)(dev);
+ if (ret) {
+ NTB_LOG(ERR, "Unable to init ntb dev.");
+ return ret;
+ }
+
+ if (hw->ntb_ops->set_link == NULL)
+ return -ENOTSUP;
+ ret = (*hw->ntb_ops->set_link)(dev, 1);
+ if (ret)
+ return ret;
+
+ return ret;
+}
+
+static int
+ntb_create(struct rte_pci_device *pci_dev, int socket_id)
+{
+ char name[RTE_RAWDEV_NAME_MAX_LEN];
+ struct rte_rawdev *rawdev = NULL;
+ int ret;
+
+ if (pci_dev == NULL) {
+ NTB_LOG(ERR, "Invalid pci_dev.");
+ ret = -EINVAL;
+ }
+
+ memset(name, 0, sizeof(name));
+ snprintf(name, RTE_RAWDEV_NAME_MAX_LEN, "NTB:%x:%02x.%x",
+ pci_dev->addr.bus, pci_dev->addr.devid,
+ pci_dev->addr.function);
+
+ NTB_LOG(INFO, "Init %s on NUMA node %d", name, socket_id);
+
+ /* Allocate device structure. */
+ rawdev = rte_rawdev_pmd_allocate(name, sizeof(struct ntb_hw),
+ socket_id);
+ if (rawdev == NULL) {
+ NTB_LOG(ERR, "Unable to allocate rawdev.");
+ ret = -EINVAL;
+ }
+
+ rawdev->dev_ops = &ntb_ops;
+ rawdev->device = &pci_dev->device;
+ rawdev->driver_name = pci_dev->driver->driver.name;
+
+ ret = ntb_init_hw(rawdev, pci_dev);
+ if (ret < 0) {
+ NTB_LOG(ERR, "Unable to init ntb hw.");
+ goto fail;
+ }
+
+ return ret;
+
+fail:
+ if (rawdev)
+ rte_rawdev_pmd_release(rawdev);
+
+ return ret;
+}
+
+static int
+ntb_destroy(struct rte_pci_device *pci_dev)
+{
+ char name[RTE_RAWDEV_NAME_MAX_LEN];
+ struct rte_rawdev *rawdev;
+ int ret;
+
+ if (pci_dev == NULL) {
+ NTB_LOG(ERR, "Invalid pci_dev.");
+ ret = -EINVAL;
+ return ret;
+ }
+
+ memset(name, 0, sizeof(name));
+ snprintf(name, RTE_RAWDEV_NAME_MAX_LEN, "NTB:%x:%02x.%x",
+ pci_dev->addr.bus, pci_dev->addr.devid,
+ pci_dev->addr.function);
+
+ NTB_LOG(INFO, "Closing %s on NUMA node %d", name, rte_socket_id());
+
+ rawdev = rte_rawdev_pmd_get_named_dev(name);
+ if (rawdev == NULL) {
+ NTB_LOG(ERR, "Invalid device name (%s)", name);
+ ret = -EINVAL;
+ return ret;
+ }
+
+ ret = rte_rawdev_pmd_release(rawdev);
+ if (ret)
+ NTB_LOG(ERR, "Failed to destroy ntb rawdev.");
+
+ return ret;
+}
+
+static int
+ntb_probe(struct rte_pci_driver *pci_drv __rte_unused,
+ struct rte_pci_device *pci_dev)
+{
+ return ntb_create(pci_dev, rte_socket_id());
+}
+
+static int
+ntb_remove(struct rte_pci_device *pci_dev)
+{
+ return ntb_destroy(pci_dev);
+}
+
+
+static struct rte_pci_driver rte_ntb_pmd = {
+ .id_table = pci_id_ntb_map,
+ .drv_flags = RTE_PCI_DRV_NEED_MAPPING,
+ .probe = ntb_probe,
+ .remove = ntb_remove,
+};
+
+RTE_PMD_REGISTER_PCI(raw_ntb, rte_ntb_pmd);
+RTE_PMD_REGISTER_PCI_TABLE(raw_ntb, pci_id_ntb_map);
+RTE_PMD_REGISTER_KMOD_DEP(raw_ntb, "* igb_uio | uio_pci_generic | vfio-pci");
+
+RTE_INIT(ntb_init_log)
+{
+ ntb_logtype = rte_log_register("pmd.raw.ntb");
+ if (ntb_logtype >= 0)
+ rte_log_set_level(ntb_logtype, RTE_LOG_DEBUG);
+}
--- /dev/null
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2019 Intel Corporation.
+ */
+
+#ifndef _NTB_RAWDEV_H_
+#define _NTB_RAWDEV_H_
+
+#include <stdbool.h>
+
+extern int ntb_logtype;
+
+#define NTB_LOG(level, fmt, args...) \
+ rte_log(RTE_LOG_ ## level, ntb_logtype, "%s(): " fmt "\n", \
+ __func__, ##args)
+
+/* Vendor ID */
+#define NTB_INTEL_VENDOR_ID 0x8086
+
+/* Device IDs */
+#define NTB_INTEL_DEV_ID_B2B_SKX 0x201C
+
+#define NTB_TOPO_NAME "topo"
+#define NTB_LINK_STATUS_NAME "link_status"
+#define NTB_SPEED_NAME "speed"
+#define NTB_WIDTH_NAME "width"
+#define NTB_MW_CNT_NAME "mw_count"
+#define NTB_DB_CNT_NAME "db_count"
+#define NTB_SPAD_CNT_NAME "spad_count"
+/* Reserved to app to use. */
+#define NTB_SPAD_USER "spad_user_"
+#define NTB_SPAD_USER_LEN (sizeof(NTB_SPAD_USER) - 1)
+#define NTB_SPAD_USER_MAX_NUM 10
+#define NTB_ATTR_NAME_LEN 30
+#define NTB_ATTR_VAL_LEN 30
+#define NTB_ATTR_MAX 20
+
+/* NTB Attributes */
+struct ntb_attr {
+ /**< Name of the attribute */
+ char name[NTB_ATTR_NAME_LEN];
+ /**< Value or reference of value of attribute */
+ char value[NTB_ATTR_NAME_LEN];
+};
+
+enum ntb_attr_idx {
+ NTB_TOPO_ID = 0,
+ NTB_LINK_STATUS_ID,
+ NTB_SPEED_ID,
+ NTB_WIDTH_ID,
+ NTB_MW_CNT_ID,
+ NTB_DB_CNT_ID,
+ NTB_SPAD_CNT_ID,
+};
+
+enum ntb_topo {
+ NTB_TOPO_NONE = 0,
+ NTB_TOPO_B2B_USD,
+ NTB_TOPO_B2B_DSD,
+};
+
+enum ntb_link {
+ NTB_LINK_DOWN = 0,
+ NTB_LINK_UP,
+};
+
+enum ntb_speed {
+ NTB_SPEED_NONE = 0,
+ NTB_SPEED_GEN1 = 1,
+ NTB_SPEED_GEN2 = 2,
+ NTB_SPEED_GEN3 = 3,
+ NTB_SPEED_GEN4 = 4,
+};
+
+enum ntb_width {
+ NTB_WIDTH_NONE = 0,
+ NTB_WIDTH_1 = 1,
+ NTB_WIDTH_2 = 2,
+ NTB_WIDTH_4 = 4,
+ NTB_WIDTH_8 = 8,
+ NTB_WIDTH_12 = 12,
+ NTB_WIDTH_16 = 16,
+ NTB_WIDTH_32 = 32,
+};
+
+/* Define spad registers usage. 0 is reserved. */
+enum ntb_spad_idx {
+ SPAD_NUM_MWS = 1,
+ SPAD_NUM_QPS,
+ SPAD_Q_SZ,
+ SPAD_MW0_SZ_H,
+ SPAD_MW0_SZ_L,
+ SPAD_MW1_SZ_H,
+ SPAD_MW1_SZ_L,
+};
+
+/**
+ * NTB device operations
+ * @ntb_dev_init: Init ntb dev.
+ * @get_peer_mw_addr: To get the addr of peer mw[mw_idx].
+ * @mw_set_trans: Set translation of internal memory that remote can access.
+ * @get_link_status: get link status, link speed and link width.
+ * @set_link: Set local side up/down.
+ * @spad_read: Read local/peer spad register val.
+ * @spad_write: Write val to local/peer spad register.
+ * @db_read: Read doorbells status.
+ * @db_clear: Clear local doorbells.
+ * @db_set_mask: Set bits in db mask, preventing db interrpts generated
+ * for those db bits.
+ * @peer_db_set: Set doorbell bit to generate peer interrupt for that bit.
+ * @vector_bind: Bind vector source [intr] to msix vector [msix].
+ */
+struct ntb_dev_ops {
+ int (*ntb_dev_init)(struct rte_rawdev *dev);
+ void *(*get_peer_mw_addr)(struct rte_rawdev *dev, int mw_idx);
+ int (*mw_set_trans)(struct rte_rawdev *dev, int mw_idx,
+ uint64_t addr, uint64_t size);
+ int (*get_link_status)(struct rte_rawdev *dev);
+ int (*set_link)(struct rte_rawdev *dev, bool up);
+ uint32_t (*spad_read)(struct rte_rawdev *dev, int spad, bool peer);
+ int (*spad_write)(struct rte_rawdev *dev, int spad,
+ bool peer, uint32_t spad_v);
+ uint64_t (*db_read)(struct rte_rawdev *dev);
+ int (*db_clear)(struct rte_rawdev *dev, uint64_t db_bits);
+ int (*db_set_mask)(struct rte_rawdev *dev, uint64_t db_mask);
+ int (*peer_db_set)(struct rte_rawdev *dev, uint8_t db_bit);
+ int (*vector_bind)(struct rte_rawdev *dev, uint8_t intr, uint8_t msix);
+};
+
+/* ntb private data. */
+struct ntb_hw {
+ uint8_t mw_cnt;
+ uint8_t peer_mw_cnt;
+ uint8_t db_cnt;
+ uint8_t spad_cnt;
+
+ uint64_t db_valid_mask;
+ uint64_t db_mask;
+
+ enum ntb_topo topo;
+
+ enum ntb_link link_status;
+ enum ntb_speed link_speed;
+ enum ntb_width link_width;
+
+ const struct ntb_dev_ops *ntb_ops;
+
+ struct rte_pci_device *pci_dev;
+ char *hw_addr;
+
+ uint64_t *mw_size;
+ uint64_t *peer_mw_size;
+ uint8_t peer_dev_up;
+
+ uint16_t queue_pairs;
+ uint16_t queue_size;
+
+ /**< mem zone to populate RX ring. */
+ const struct rte_memzone **mz;
+
+ /* Reserve several spad for app to use. */
+ int spad_user_list[NTB_SPAD_USER_MAX_NUM];
+};
+
+#endif /* _NTB_RAWDEV_H_ */
git.droids-corp.org / dpdk.git / commitdiff