--- /dev/null
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2020 Intel Corporation
+ */
+
+#ifndef _RTE_ACC100_CFG_H_
+#define _RTE_ACC100_CFG_H_
+
+/**
+ * @file rte_acc100_cfg.h
+ *
+ * Functions for configuring ACC100 HW, exposed directly to applications.
+ * Configuration related to encoding/decoding is done through the
+ * librte_bbdev library.
+ *
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ */
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+/**< Number of Virtual Functions ACC100 supports */
+#define RTE_ACC100_NUM_VFS 16
+
+/**
+ * Definition of Queue Topology for ACC100 Configuration
+ * Some level of details is abstracted out to expose a clean interface
+ * given that comprehensive flexibility is not required
+ */
+struct rte_acc100_queue_topology {
+ /** Number of QGroups in incremental order of priority */
+ uint16_t num_qgroups;
+ /**
+ * All QGroups have the same number of AQs here.
+ * Note : Could be made a 16-array if more flexibility is really
+ * required
+ */
+ uint16_t num_aqs_per_groups;
+ /**
+ * Depth of the AQs is the same of all QGroups here. Log2 Enum : 2^N
+ * Note : Could be made a 16-array if more flexibility is really
+ * required
+ */
+ uint16_t aq_depth_log2;
+ /**
+ * Index of the first Queue Group Index - assuming contiguity
+ * Initialized as -1
+ */
+ int8_t first_qgroup_index;
+};
+
+/**
+ * Definition of Arbitration related parameters for ACC100 Configuration
+ */
+struct rte_acc100_arbitration {
+ /** Default Weight for VF Fairness Arbitration */
+ uint16_t round_robin_weight;
+ uint32_t gbr_threshold1; /**< Guaranteed Bitrate Threshold 1 */
+ uint32_t gbr_threshold2; /**< Guaranteed Bitrate Threshold 2 */
+};
+
+/**
+ * Structure to pass ACC100 configuration.
+ * Note: all VF Bundles will have the same configuration.
+ */
+struct rte_acc100_conf {
+ bool pf_mode_en; /**< 1 if PF is used for dataplane, 0 for VFs */
+ /** 1 if input '1' bit is represented by a positive LLR value, 0 if '1'
+ * bit is represented by a negative value.
+ */
+ bool input_pos_llr_1_bit;
+ /** 1 if output '1' bit is represented by a positive value, 0 if '1'
+ * bit is represented by a negative value.
+ */
+ bool output_pos_llr_1_bit;
+ uint16_t num_vf_bundles; /**< Number of VF bundles to setup */
+ /** Queue topology for each operation type */
+ struct rte_acc100_queue_topology q_ul_4g;
+ struct rte_acc100_queue_topology q_dl_4g;
+ struct rte_acc100_queue_topology q_ul_5g;
+ struct rte_acc100_queue_topology q_dl_5g;
+ /** Arbitration configuration for each operation type */
+ struct rte_acc100_arbitration arb_ul_4g[RTE_ACC100_NUM_VFS];
+ struct rte_acc100_arbitration arb_dl_4g[RTE_ACC100_NUM_VFS];
+ struct rte_acc100_arbitration arb_ul_5g[RTE_ACC100_NUM_VFS];
+ struct rte_acc100_arbitration arb_dl_5g[RTE_ACC100_NUM_VFS];
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_ACC100_CFG_H_ */
RTE_LOG_REGISTER(acc100_logtype, pmd.bb.acc100, NOTICE);
#endif
+/* Read a register of a ACC100 device */
+static inline uint32_t
+acc100_reg_read(struct acc100_device *d, uint32_t offset)
+{
+
+ void *reg_addr = RTE_PTR_ADD(d->mmio_base, offset);
+ uint32_t ret = *((volatile uint32_t *)(reg_addr));
+ return rte_le_to_cpu_32(ret);
+}
+
+/* Calculate the offset of the enqueue register */
+static inline uint32_t
+queue_offset(bool pf_device, uint8_t vf_id, uint8_t qgrp_id, uint16_t aq_id)
+{
+ if (pf_device)
+ return ((vf_id << 12) + (qgrp_id << 7) + (aq_id << 3) +
+ HWPfQmgrIngressAq);
+ else
+ return ((qgrp_id << 7) + (aq_id << 3) +
+ HWVfQmgrIngressAq);
+}
+
+enum {UL_4G = 0, UL_5G, DL_4G, DL_5G, NUM_ACC};
+
+/* Return the queue topology for a Queue Group Index */
+static inline void
+qtopFromAcc(struct rte_acc100_queue_topology **qtop, int acc_enum,
+ struct rte_acc100_conf *acc100_conf)
+{
+ struct rte_acc100_queue_topology *p_qtop;
+ p_qtop = NULL;
+ switch (acc_enum) {
+ case UL_4G:
+ p_qtop = &(acc100_conf->q_ul_4g);
+ break;
+ case UL_5G:
+ p_qtop = &(acc100_conf->q_ul_5g);
+ break;
+ case DL_4G:
+ p_qtop = &(acc100_conf->q_dl_4g);
+ break;
+ case DL_5G:
+ p_qtop = &(acc100_conf->q_dl_5g);
+ break;
+ default:
+ /* NOTREACHED */
+ rte_bbdev_log(ERR, "Unexpected error evaluating qtopFromAcc");
+ break;
+ }
+ *qtop = p_qtop;
+}
+
+static void
+initQTop(struct rte_acc100_conf *acc100_conf)
+{
+ acc100_conf->q_ul_4g.num_aqs_per_groups = 0;
+ acc100_conf->q_ul_4g.num_qgroups = 0;
+ acc100_conf->q_ul_4g.first_qgroup_index = -1;
+ acc100_conf->q_ul_5g.num_aqs_per_groups = 0;
+ acc100_conf->q_ul_5g.num_qgroups = 0;
+ acc100_conf->q_ul_5g.first_qgroup_index = -1;
+ acc100_conf->q_dl_4g.num_aqs_per_groups = 0;
+ acc100_conf->q_dl_4g.num_qgroups = 0;
+ acc100_conf->q_dl_4g.first_qgroup_index = -1;
+ acc100_conf->q_dl_5g.num_aqs_per_groups = 0;
+ acc100_conf->q_dl_5g.num_qgroups = 0;
+ acc100_conf->q_dl_5g.first_qgroup_index = -1;
+}
+
+static inline void
+updateQtop(uint8_t acc, uint8_t qg, struct rte_acc100_conf *acc100_conf,
+ struct acc100_device *d) {
+ uint32_t reg;
+ struct rte_acc100_queue_topology *q_top = NULL;
+ qtopFromAcc(&q_top, acc, acc100_conf);
+ if (unlikely(q_top == NULL))
+ return;
+ uint16_t aq;
+ q_top->num_qgroups++;
+ if (q_top->first_qgroup_index == -1) {
+ q_top->first_qgroup_index = qg;
+ /* Can be optimized to assume all are enabled by default */
+ reg = acc100_reg_read(d, queue_offset(d->pf_device,
+ 0, qg, ACC100_NUM_AQS - 1));
+ if (reg & ACC100_QUEUE_ENABLE) {
+ q_top->num_aqs_per_groups = ACC100_NUM_AQS;
+ return;
+ }
+ q_top->num_aqs_per_groups = 0;
+ for (aq = 0; aq < ACC100_NUM_AQS; aq++) {
+ reg = acc100_reg_read(d, queue_offset(d->pf_device,
+ 0, qg, aq));
+ if (reg & ACC100_QUEUE_ENABLE)
+ q_top->num_aqs_per_groups++;
+ }
+ }
+}
+
+/* Fetch configuration enabled for the PF/VF using MMIO Read (slow) */
+static inline void
+fetch_acc100_config(struct rte_bbdev *dev)
+{
+ struct acc100_device *d = dev->data->dev_private;
+ struct rte_acc100_conf *acc100_conf = &d->acc100_conf;
+ const struct acc100_registry_addr *reg_addr;
+ uint8_t acc, qg;
+ uint32_t reg, reg_aq, reg_len0, reg_len1;
+ uint32_t reg_mode;
+
+ /* No need to retrieve the configuration is already done */
+ if (d->configured)
+ return;
+
+ /* Choose correct registry addresses for the device type */
+ if (d->pf_device)
+ reg_addr = &pf_reg_addr;
+ else
+ reg_addr = &vf_reg_addr;
+
+ d->ddr_size = (1 + acc100_reg_read(d, reg_addr->ddr_range)) << 10;
+
+ /* Single VF Bundle by VF */
+ acc100_conf->num_vf_bundles = 1;
+ initQTop(acc100_conf);
+
+ struct rte_acc100_queue_topology *q_top = NULL;
+ int qman_func_id[ACC100_NUM_ACCS] = {ACC100_ACCMAP_0, ACC100_ACCMAP_1,
+ ACC100_ACCMAP_2, ACC100_ACCMAP_3, ACC100_ACCMAP_4};
+ reg = acc100_reg_read(d, reg_addr->qman_group_func);
+ for (qg = 0; qg < ACC100_NUM_QGRPS_PER_WORD; qg++) {
+ reg_aq = acc100_reg_read(d,
+ queue_offset(d->pf_device, 0, qg, 0));
+ if (reg_aq & ACC100_QUEUE_ENABLE) {
+ uint32_t idx = (reg >> (qg * 4)) & 0x7;
+ if (idx < ACC100_NUM_ACCS) {
+ acc = qman_func_id[idx];
+ updateQtop(acc, qg, acc100_conf, d);
+ }
+ }
+ }
+
+ /* Check the depth of the AQs*/
+ reg_len0 = acc100_reg_read(d, reg_addr->depth_log0_offset);
+ reg_len1 = acc100_reg_read(d, reg_addr->depth_log1_offset);
+ for (acc = 0; acc < NUM_ACC; acc++) {
+ qtopFromAcc(&q_top, acc, acc100_conf);
+ if (q_top->first_qgroup_index < ACC100_NUM_QGRPS_PER_WORD)
+ q_top->aq_depth_log2 = (reg_len0 >>
+ (q_top->first_qgroup_index * 4))
+ & 0xF;
+ else
+ q_top->aq_depth_log2 = (reg_len1 >>
+ ((q_top->first_qgroup_index -
+ ACC100_NUM_QGRPS_PER_WORD) * 4))
+ & 0xF;
+ }
+
+ /* Read PF mode */
+ if (d->pf_device) {
+ reg_mode = acc100_reg_read(d, HWPfHiPfMode);
+ acc100_conf->pf_mode_en = (reg_mode == ACC100_PF_VAL) ? 1 : 0;
+ }
+
+ rte_bbdev_log_debug(
+ "%s Config LLR SIGN IN/OUT %s %s QG %u %u %u %u AQ %u %u %u %u Len %u %u %u %u\n",
+ (d->pf_device) ? "PF" : "VF",
+ (acc100_conf->input_pos_llr_1_bit) ? "POS" : "NEG",
+ (acc100_conf->output_pos_llr_1_bit) ? "POS" : "NEG",
+ acc100_conf->q_ul_4g.num_qgroups,
+ acc100_conf->q_dl_4g.num_qgroups,
+ acc100_conf->q_ul_5g.num_qgroups,
+ acc100_conf->q_dl_5g.num_qgroups,
+ acc100_conf->q_ul_4g.num_aqs_per_groups,
+ acc100_conf->q_dl_4g.num_aqs_per_groups,
+ acc100_conf->q_ul_5g.num_aqs_per_groups,
+ acc100_conf->q_dl_5g.num_aqs_per_groups,
+ acc100_conf->q_ul_4g.aq_depth_log2,
+ acc100_conf->q_dl_4g.aq_depth_log2,
+ acc100_conf->q_ul_5g.aq_depth_log2,
+ acc100_conf->q_dl_5g.aq_depth_log2);
+}
+
/* Free 64MB memory used for software rings */
static int
acc100_dev_close(struct rte_bbdev *dev __rte_unused)
return 0;
}
+/* Get ACC100 device info */
+static void
+acc100_dev_info_get(struct rte_bbdev *dev,
+ struct rte_bbdev_driver_info *dev_info)
+{
+ struct acc100_device *d = dev->data->dev_private;
+
+ static const struct rte_bbdev_op_cap bbdev_capabilities[] = {
+ RTE_BBDEV_END_OF_CAPABILITIES_LIST()
+ };
+
+ static struct rte_bbdev_queue_conf default_queue_conf;
+ default_queue_conf.socket = dev->data->socket_id;
+ default_queue_conf.queue_size = ACC100_MAX_QUEUE_DEPTH;
+
+ dev_info->driver_name = dev->device->driver->name;
+
+ /* Read and save the populated config from ACC100 registers */
+ fetch_acc100_config(dev);
+
+ /* This isn't ideal because it reports the maximum number of queues but
+ * does not provide info on how many can be uplink/downlink or different
+ * priorities
+ */
+ dev_info->max_num_queues =
+ d->acc100_conf.q_dl_5g.num_aqs_per_groups *
+ d->acc100_conf.q_dl_5g.num_qgroups +
+ d->acc100_conf.q_ul_5g.num_aqs_per_groups *
+ d->acc100_conf.q_ul_5g.num_qgroups +
+ d->acc100_conf.q_dl_4g.num_aqs_per_groups *
+ d->acc100_conf.q_dl_4g.num_qgroups +
+ d->acc100_conf.q_ul_4g.num_aqs_per_groups *
+ d->acc100_conf.q_ul_4g.num_qgroups;
+ dev_info->queue_size_lim = ACC100_MAX_QUEUE_DEPTH;
+ dev_info->hardware_accelerated = true;
+ dev_info->max_dl_queue_priority =
+ d->acc100_conf.q_dl_4g.num_qgroups - 1;
+ dev_info->max_ul_queue_priority =
+ d->acc100_conf.q_ul_4g.num_qgroups - 1;
+ dev_info->default_queue_conf = default_queue_conf;
+ dev_info->cpu_flag_reqs = NULL;
+ dev_info->min_alignment = 64;
+ dev_info->capabilities = bbdev_capabilities;
+ dev_info->harq_buffer_size = d->ddr_size;
+}
+
static const struct rte_bbdev_ops acc100_bbdev_ops = {
.close = acc100_dev_close,
+ .info_get = acc100_dev_info_get,
};
/* ACC100 PCI PF address map */
git.droids-corp.org / dpdk.git / commitdiff