[PATCH v1 27/31] net/ntnic: add queue select (QSL) FPGA module

[Serhii Iliushyk <sil-plv@napatech.com>]

From: Oleksandr Kolomeiets <okl-plv@napatech.com>

The Queue Selector module directs packets to a given destination
which includes host queues, physical ports, exceptions paths, and discard.

Signed-off-by: Oleksandr Kolomeiets <okl-plv@napatech.com>
---
 drivers/net/ntnic/include/hw_mod_backend.h    |  37 ++++
 drivers/net/ntnic/meson.build                 |   1 +
 drivers/net/ntnic/nthw/flow_api/flow_api.c    |  14 ++
 .../nthw/flow_api/hw_mod/hw_mod_backend.c     |   1 +
 .../ntnic/nthw/flow_api/hw_mod/hw_mod_qsl.c   | 170 ++++++++++++++++++
 .../supported/nthw_fpga_9563_055_049_0000.c   |  57 +++++-
 6 files changed, 279 insertions(+), 1 deletion(-)
 create mode 100644 drivers/net/ntnic/nthw/flow_api/hw_mod/hw_mod_qsl.c

diff --git a/drivers/net/ntnic/include/hw_mod_backend.h b/drivers/net/ntnic/include/hw_mod_backend.h
index 6bf651272f..13e0d1731e 100644
--- a/drivers/net/ntnic/include/hw_mod_backend.h
+++ b/drivers/net/ntnic/include/hw_mod_backend.h
@@ -537,6 +537,42 @@ struct qsl_func_s {
 		struct hw_mod_qsl_v7_s v7;
 	};
 };
+enum hw_qsl_e {
+	/* functions */
+	HW_QSL_RCP_PRESET_ALL = 0,
+	HW_QSL_RCP_COMPARE,
+	HW_QSL_RCP_FIND,
+	HW_QSL_QST_PRESET_ALL,
+	/* fields */
+	HW_QSL_RCP_DISCARD = FIELD_START_INDEX,
+	HW_QSL_RCP_DROP,
+	HW_QSL_RCP_TBL_LO,
+	HW_QSL_RCP_TBL_HI,
+	HW_QSL_RCP_TBL_IDX,
+	HW_QSL_RCP_TBL_MSK,
+	HW_QSL_RCP_LR,
+	HW_QSL_RCP_TSA,
+	HW_QSL_RCP_VLI,
+	HW_QSL_QST_QUEUE,
+	HW_QSL_QST_EN,	/* Alias: HW_QSL_QST_QEN */
+	HW_QSL_QST_TX_PORT,
+	HW_QSL_QST_LRE,
+	HW_QSL_QST_TCI,
+	HW_QSL_QST_VEN,
+	HW_QSL_QEN_EN,
+	HW_QSL_UNMQ_DEST_QUEUE,
+	HW_QSL_UNMQ_EN,
+};
+bool hw_mod_qsl_present(struct flow_api_backend_s *be);
+int hw_mod_qsl_alloc(struct flow_api_backend_s *be);
+void hw_mod_qsl_free(struct flow_api_backend_s *be);
+int hw_mod_qsl_reset(struct flow_api_backend_s *be);
+int hw_mod_qsl_rcp_flush(struct flow_api_backend_s *be, int start_idx, int count);
+int hw_mod_qsl_qst_flush(struct flow_api_backend_s *be, int start_idx, int count);
+int hw_mod_qsl_qen_flush(struct flow_api_backend_s *be, int start_idx, int count);
+int hw_mod_qsl_unmq_flush(struct flow_api_backend_s *be, int start_idx, int count);
+int hw_mod_qsl_unmq_set(struct flow_api_backend_s *be, enum hw_qsl_e field, uint32_t index,
+	uint32_t value);
 
 struct slc_lr_func_s {
 	COMMON_FUNC_INFO_S;
@@ -721,6 +757,7 @@ struct flow_api_backend_s {
 	struct km_func_s km;
 	struct flm_func_s flm;
 	struct hsh_func_s hsh;
+	struct qsl_func_s qsl;
 
 	/* NIC attributes */
 	unsigned int num_phy_ports;
diff --git a/drivers/net/ntnic/meson.build b/drivers/net/ntnic/meson.build
index 18aafc57f0..02981ef987 100644
--- a/drivers/net/ntnic/meson.build
+++ b/drivers/net/ntnic/meson.build
@@ -53,6 +53,7 @@ sources = files(
         'nthw/flow_api/hw_mod/hw_mod_flm.c',
         'nthw/flow_api/hw_mod/hw_mod_hsh.c',
         'nthw/flow_api/hw_mod/hw_mod_km.c',
+        'nthw/flow_api/hw_mod/hw_mod_qsl.c',
         'nthw/flow_filter/flow_nthw_cat.c',
         'nthw/flow_filter/flow_nthw_csu.c',
         'nthw/flow_filter/flow_nthw_flm.c',
diff --git a/drivers/net/ntnic/nthw/flow_api/flow_api.c b/drivers/net/ntnic/nthw/flow_api/flow_api.c
index b43c8fef1a..5d6571310c 100644
--- a/drivers/net/ntnic/nthw/flow_api/flow_api.c
+++ b/drivers/net/ntnic/nthw/flow_api/flow_api.c
@@ -144,6 +144,14 @@ int flow_delete_eth_dev(struct flow_eth_dev *eth_dev)
 	/* delete all created flows from this device */
 	pthread_mutex_lock(&ndev->mtx);
 
+	/*
+	 * remove unmatched queue if setup in QSL
+	 * remove exception queue setting in QSL UNM
+	 */
+	hw_mod_qsl_unmq_set(&ndev->be, HW_QSL_UNMQ_DEST_QUEUE, eth_dev->port, 0);
+	hw_mod_qsl_unmq_set(&ndev->be, HW_QSL_UNMQ_EN, eth_dev->port, 0);
+	hw_mod_qsl_unmq_flush(&ndev->be, eth_dev->port, 1);
+
 #ifdef FLOW_DEBUG
 	ndev->be.iface->set_debug_mode(ndev->be.be_dev, FLOW_BACKEND_DEBUG_MODE_NONE);
 #endif
@@ -293,6 +301,12 @@ struct flow_nic_dev *flow_api_create(uint8_t adapter_no, const struct flow_api_b
 	if (init_resource_elements(ndev, RES_HSH_RCP, ndev->be.hsh.nb_rcp))
 		goto err_exit;
 
+	if (init_resource_elements(ndev, RES_QSL_RCP, ndev->be.qsl.nb_rcp_categories))
+		goto err_exit;
+
+	if (init_resource_elements(ndev, RES_QSL_QST, ndev->be.qsl.nb_qst_entries))
+		goto err_exit;
+
 	if (init_resource_elements(ndev, RES_SLC_LR_RCP, ndev->be.max_categories))
 		goto err_exit;
 
diff --git a/drivers/net/ntnic/nthw/flow_api/hw_mod/hw_mod_backend.c b/drivers/net/ntnic/nthw/flow_api/hw_mod/hw_mod_backend.c
index 3ccc14c4ce..4f16235a67 100644
--- a/drivers/net/ntnic/nthw/flow_api/hw_mod/hw_mod_backend.c
+++ b/drivers/net/ntnic/nthw/flow_api/hw_mod/hw_mod_backend.c
@@ -21,6 +21,7 @@ static const struct {
 	{ "KM", hw_mod_km_alloc, hw_mod_km_free, hw_mod_km_reset, hw_mod_km_present },
 	{ "FLM", hw_mod_flm_alloc, hw_mod_flm_free, hw_mod_flm_reset, hw_mod_flm_present },
 	{ "HSH", hw_mod_hsh_alloc, hw_mod_hsh_free, hw_mod_hsh_reset, hw_mod_hsh_present },
+	{ "QSL", hw_mod_qsl_alloc, hw_mod_qsl_free, hw_mod_qsl_reset, hw_mod_qsl_present },
 };
 #define MOD_COUNT (ARRAY_SIZE(module))
 
diff --git a/drivers/net/ntnic/nthw/flow_api/hw_mod/hw_mod_qsl.c b/drivers/net/ntnic/nthw/flow_api/hw_mod/hw_mod_qsl.c
new file mode 100644
index 0000000000..f69717cf84
--- /dev/null
+++ b/drivers/net/ntnic/nthw/flow_api/hw_mod/hw_mod_qsl.c
@@ -0,0 +1,170 @@
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2023 Napatech A/S
+ */
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "hw_mod_backend.h"
+
+#define _MOD_ "QSL"
+#define _VER_ be->qsl.ver
+
+#define QSL_QEN_ENTRIES 32
+#define QSL_QNMQ_ENTRIES 256
+
+bool hw_mod_qsl_present(struct flow_api_backend_s *be)
+{
+	return be->iface->get_qsl_present(be->be_dev);
+}
+
+int hw_mod_qsl_alloc(struct flow_api_backend_s *be)
+{
+	int nb;
+	_VER_ = be->iface->get_qsl_version(be->be_dev);
+	NT_LOG(DBG, FILTER, "QSL MODULE VERSION  %i.%i\n", VER_MAJOR(_VER_), VER_MINOR(_VER_));
+
+	nb = be->iface->get_nb_qsl_categories(be->be_dev);
+
+	if (nb <= 0)
+		return COUNT_ERROR(qsl_categories);
+
+	be->qsl.nb_rcp_categories = (uint32_t)nb;
+
+	nb = be->iface->get_nb_qsl_qst_entries(be->be_dev);
+
+	if (nb <= 0)
+		return COUNT_ERROR(qsl_qst_entries);
+
+	be->qsl.nb_qst_entries = (uint32_t)nb;
+
+	switch (_VER_) {
+	case 7:
+		if (!callocate_mod((struct common_func_s *)&be->qsl, 4, &be->qsl.v7.rcp,
+				be->qsl.nb_rcp_categories, sizeof(struct qsl_v7_rcp_s),
+				&be->qsl.v7.qst, be->qsl.nb_qst_entries,
+				sizeof(struct qsl_v7_qst_s), &be->qsl.v7.qen, QSL_QEN_ENTRIES,
+				sizeof(struct qsl_v7_qen_s), &be->qsl.v7.unmq, QSL_QNMQ_ENTRIES,
+				sizeof(struct qsl_v7_unmq_s)))
+			return -1;
+
+		break;
+
+	/* end case 7 */
+	default:
+		return UNSUP_VER;
+	}
+
+	return 0;
+}
+
+void hw_mod_qsl_free(struct flow_api_backend_s *be)
+{
+	if (be->qsl.base) {
+		free(be->qsl.base);
+		be->qsl.base = NULL;
+	}
+}
+
+int hw_mod_qsl_reset(struct flow_api_backend_s *be)
+{
+	/* Zero entire cache area */
+	zero_module_cache((struct common_func_s *)(&be->qsl));
+
+	NT_LOG(DBG, FILTER, "INIT QSL RCP\n");
+	hw_mod_qsl_rcp_flush(be, 0, ALL_ENTRIES);
+
+	NT_LOG(DBG, FILTER, "INIT QSL QST\n");
+	hw_mod_qsl_qst_flush(be, 0, ALL_ENTRIES);
+
+	NT_LOG(DBG, FILTER, "INIT QSL QEN\n");
+	hw_mod_qsl_qen_flush(be, 0, ALL_ENTRIES);
+
+	NT_LOG(DBG, FILTER, "INIT QSL UNMQ\n");
+	be->iface->qsl_unmq_flush(be->be_dev, &be->qsl, 0, 256);
+
+	return 0;
+}
+
+int hw_mod_qsl_rcp_flush(struct flow_api_backend_s *be, int start_idx, int count)
+{
+	if (count == ALL_ENTRIES)
+		count = be->qsl.nb_rcp_categories;
+
+	if ((unsigned int)(start_idx + count) > be->qsl.nb_rcp_categories)
+		return INDEX_TOO_LARGE;
+
+	return be->iface->qsl_rcp_flush(be->be_dev, &be->qsl, start_idx, count);
+}
+
+int hw_mod_qsl_qst_flush(struct flow_api_backend_s *be, int start_idx, int count)
+{
+	if (count == ALL_ENTRIES)
+		count = be->qsl.nb_qst_entries;
+
+	if ((unsigned int)(start_idx + count) > be->qsl.nb_qst_entries)
+		return INDEX_TOO_LARGE;
+
+	return be->iface->qsl_qst_flush(be->be_dev, &be->qsl, start_idx, count);
+}
+
+int hw_mod_qsl_qen_flush(struct flow_api_backend_s *be, int start_idx, int count)
+{
+	if (count == ALL_ENTRIES)
+		count = QSL_QEN_ENTRIES;
+
+	if ((start_idx + count) > QSL_QEN_ENTRIES)
+		return INDEX_TOO_LARGE;
+
+	return be->iface->qsl_qen_flush(be->be_dev, &be->qsl, start_idx, count);
+}
+
+int hw_mod_qsl_unmq_flush(struct flow_api_backend_s *be, int start_idx, int count)
+{
+	if (count == ALL_ENTRIES)
+		count = QSL_QNMQ_ENTRIES;
+
+	if ((start_idx + count) > QSL_QNMQ_ENTRIES)
+		return INDEX_TOO_LARGE;
+
+	return be->iface->qsl_unmq_flush(be->be_dev, &be->qsl, start_idx, count);
+}
+
+static int hw_mod_qsl_unmq_mod(struct flow_api_backend_s *be, enum hw_qsl_e field, uint32_t index,
+	uint32_t *value, int get)
+{
+	if (index >= QSL_QNMQ_ENTRIES)
+		return INDEX_TOO_LARGE;
+
+	switch (_VER_) {
+	case 7:
+		switch (field) {
+		case HW_QSL_UNMQ_DEST_QUEUE:
+			GET_SET(be->qsl.v7.unmq[index].dest_queue, value);
+			break;
+
+		case HW_QSL_UNMQ_EN:
+			GET_SET(be->qsl.v7.unmq[index].en, value);
+			break;
+
+		default:
+			return UNSUP_FIELD;
+		}
+
+		break;
+
+	/* end case 7 */
+	default:
+		return UNSUP_VER;
+	}
+
+	return 0;
+}
+
+int hw_mod_qsl_unmq_set(struct flow_api_backend_s *be, enum hw_qsl_e field, uint32_t index,
+	uint32_t value)
+{
+	return hw_mod_qsl_unmq_mod(be, field, index, &value, 0);
+}
diff --git a/drivers/net/ntnic/nthw/supported/nthw_fpga_9563_055_049_0000.c b/drivers/net/ntnic/nthw/supported/nthw_fpga_9563_055_049_0000.c
index 4317da8094..7eeb210b80 100644
--- a/drivers/net/ntnic/nthw/supported/nthw_fpga_9563_055_049_0000.c
+++ b/drivers/net/ntnic/nthw/supported/nthw_fpga_9563_055_049_0000.c
@@ -1297,6 +1297,60 @@ static nthw_fpga_register_init_s pci_wr_tg_registers[] = {
 	{ PCI_WR_TG_TG_WR_RUN, 4, 16, NTHW_FPGA_REG_TYPE_WO, 0, 1, pci_wr_tg_tg_wr_run_fields },
 };
 
+static nthw_fpga_field_init_s qsl_qen_ctrl_fields[] = {
+	{ QSL_QEN_CTRL_ADR, 5, 0, 0x0000 },
+	{ QSL_QEN_CTRL_CNT, 16, 16, 0x0000 },
+};
+
+static nthw_fpga_field_init_s qsl_qen_data_fields[] = {
+	{ QSL_QEN_DATA_EN, 4, 0, 0x0000 },
+};
+
+static nthw_fpga_field_init_s qsl_qst_ctrl_fields[] = {
+	{ QSL_QST_CTRL_ADR, 12, 0, 0x0000 },
+	{ QSL_QST_CTRL_CNT, 16, 16, 0x0000 },
+};
+
+static nthw_fpga_field_init_s qsl_qst_data_fields[] = {
+	{ QSL_QST_DATA_LRE, 1, 9, 0x0000 }, { QSL_QST_DATA_QEN, 1, 7, 0x0000 },
+	{ QSL_QST_DATA_QUEUE, 7, 0, 0x0000 }, { QSL_QST_DATA_TCI, 16, 10, 0x0000 },
+	{ QSL_QST_DATA_TX_PORT, 1, 8, 0x0000 }, { QSL_QST_DATA_VEN, 1, 26, 0x0000 },
+};
+
+static nthw_fpga_field_init_s qsl_rcp_ctrl_fields[] = {
+	{ QSL_RCP_CTRL_ADR, 5, 0, 0x0000 },
+	{ QSL_RCP_CTRL_CNT, 16, 16, 0x0000 },
+};
+
+static nthw_fpga_field_init_s qsl_rcp_data_fields[] = {
+	{ QSL_RCP_DATA_DISCARD, 1, 0, 0x0000 }, { QSL_RCP_DATA_DROP, 2, 1, 0x0000 },
+	{ QSL_RCP_DATA_LR, 2, 51, 0x0000 }, { QSL_RCP_DATA_TBL_HI, 12, 15, 0x0000 },
+	{ QSL_RCP_DATA_TBL_IDX, 12, 27, 0x0000 }, { QSL_RCP_DATA_TBL_LO, 12, 3, 0x0000 },
+	{ QSL_RCP_DATA_TBL_MSK, 12, 39, 0x0000 }, { QSL_RCP_DATA_TSA, 1, 53, 0x0000 },
+	{ QSL_RCP_DATA_VLI, 2, 54, 0x0000 },
+};
+
+static nthw_fpga_field_init_s qsl_unmq_ctrl_fields[] = {
+	{ QSL_UNMQ_CTRL_ADR, 1, 0, 0x0000 },
+	{ QSL_UNMQ_CTRL_CNT, 16, 16, 0x0000 },
+};
+
+static nthw_fpga_field_init_s qsl_unmq_data_fields[] = {
+	{ QSL_UNMQ_DATA_DEST_QUEUE, 7, 0, 0x0000 },
+	{ QSL_UNMQ_DATA_EN, 1, 7, 0x0000 },
+};
+
+static nthw_fpga_register_init_s qsl_registers[] = {
+	{ QSL_QEN_CTRL, 4, 32, NTHW_FPGA_REG_TYPE_WO, 0, 2, qsl_qen_ctrl_fields },
+	{ QSL_QEN_DATA, 5, 4, NTHW_FPGA_REG_TYPE_WO, 0, 1, qsl_qen_data_fields },
+	{ QSL_QST_CTRL, 2, 32, NTHW_FPGA_REG_TYPE_WO, 0, 2, qsl_qst_ctrl_fields },
+	{ QSL_QST_DATA, 3, 27, NTHW_FPGA_REG_TYPE_WO, 0, 6, qsl_qst_data_fields },
+	{ QSL_RCP_CTRL, 0, 32, NTHW_FPGA_REG_TYPE_WO, 0, 2, qsl_rcp_ctrl_fields },
+	{ QSL_RCP_DATA, 1, 56, NTHW_FPGA_REG_TYPE_WO, 0, 9, qsl_rcp_data_fields },
+	{ QSL_UNMQ_CTRL, 6, 32, NTHW_FPGA_REG_TYPE_WO, 0, 2, qsl_unmq_ctrl_fields },
+	{ QSL_UNMQ_DATA, 7, 8, NTHW_FPGA_REG_TYPE_WO, 0, 2, qsl_unmq_data_fields },
+};
+
 static nthw_fpga_field_init_s rac_dbg_ctrl_fields[] = {
 	{ RAC_DBG_CTRL_C, 32, 0, 0x0000 },
 };
@@ -1456,6 +1510,7 @@ static nthw_fpga_module_init_s fpga_modules[] = {
 		MOD_PCI_WR_TG, 0, MOD_PCI_WR_TG, 0, 1, NTHW_FPGA_BUS_TYPE_RAB0, 2304, 7,
 		pci_wr_tg_registers
 	},
+	{ MOD_QSL, 0, MOD_QSL, 0, 7, NTHW_FPGA_BUS_TYPE_RAB1, 1792, 8, qsl_registers },
 	{ MOD_RAC, 0, MOD_RAC, 3, 0, NTHW_FPGA_BUS_TYPE_PCI, 8192, 14, rac_registers },
 	{ MOD_RST9563, 0, MOD_RST9563, 0, 5, NTHW_FPGA_BUS_TYPE_RAB0, 1024, 5, rst9563_registers },
 };
@@ -1617,5 +1672,5 @@ static nthw_fpga_prod_param_s product_parameters[] = {
 };
 
 nthw_fpga_prod_init_s nthw_fpga_9563_055_049_0000 = {
-	200, 9563, 55, 49, 0, 0, 1726740521, 152, product_parameters, 18, fpga_modules,
+	200, 9563, 55, 49, 0, 0, 1726740521, 152, product_parameters, 19, fpga_modules,
 };
-- 
2.45.0