[PATCH v2 35/50] net/ntnic: add Tx Packet Editor (TPE) FPGA module

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

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

The TX Packet Editor is a software abstraction module,
that keeps track of the handful of FPGA modules
that are used to edit packets in the TX pipeline.

Signed-off-by: Oleksandr Kolomeiets <okl-plv@napatech.com>
---
 drivers/net/ntnic/include/hw_mod_backend.h    |  80 +++++
 drivers/net/ntnic/meson.build                 |   1 +
 drivers/net/ntnic/nthw/flow_api/flow_api.c    |   9 +
 .../nthw/flow_api/hw_mod/hw_mod_backend.c     |   1 +
 .../ntnic/nthw/flow_api/hw_mod/hw_mod_tpe.c   | 277 ++++++++++++++++++
 5 files changed, 368 insertions(+)
 create mode 100644 drivers/net/ntnic/nthw/flow_api/hw_mod/hw_mod_tpe.c

diff --git a/drivers/net/ntnic/include/hw_mod_backend.h b/drivers/net/ntnic/include/hw_mod_backend.h
index 9644639131..cfd5150e59 100644
--- a/drivers/net/ntnic/include/hw_mod_backend.h
+++ b/drivers/net/ntnic/include/hw_mod_backend.h
@@ -654,6 +654,85 @@ struct tpe_func_s {
 		struct hw_mod_tpe_v3_s v3;
 	};
 };
+enum hw_tpe_e {
+	/* functions */
+	HW_TPE_PRESET_ALL = 0,
+	HW_TPE_FIND,
+	HW_TPE_COMPARE,
+	/* Control fields */
+	HW_TPE_RPP_RCP_EXP = FIELD_START_INDEX,
+	HW_TPE_IFR_RCP_IPV4_EN,
+	HW_TPE_IFR_RCP_IPV4_DF_DROP,
+	HW_TPE_IFR_RCP_IPV6_EN,
+	HW_TPE_IFR_RCP_IPV6_DROP,
+	HW_TPE_IFR_RCP_MTU,
+	HW_TPE_INS_RCP_DYN,
+	HW_TPE_INS_RCP_OFS,
+	HW_TPE_INS_RCP_LEN,
+	HW_TPE_RPL_RCP_DYN,
+	HW_TPE_RPL_RCP_OFS,
+	HW_TPE_RPL_RCP_LEN,
+	HW_TPE_RPL_RCP_RPL_PTR,
+	HW_TPE_RPL_RCP_EXT_PRIO,
+	HW_TPE_RPL_RCP_ETH_TYPE_WR,
+	HW_TPE_RPL_EXT_RPL_PTR,
+	HW_TPE_RPL_EXT_META_RPL_LEN,	/* SW only */
+	HW_TPE_RPL_RPL_VALUE,
+	HW_TPE_CPY_RCP_READER_SELECT,
+	HW_TPE_CPY_RCP_DYN,
+	HW_TPE_CPY_RCP_OFS,
+	HW_TPE_CPY_RCP_LEN,
+	HW_TPE_HFU_RCP_LEN_A_WR,
+	HW_TPE_HFU_RCP_LEN_A_OUTER_L4_LEN,
+	HW_TPE_HFU_RCP_LEN_A_POS_DYN,
+	HW_TPE_HFU_RCP_LEN_A_POS_OFS,
+	HW_TPE_HFU_RCP_LEN_A_ADD_DYN,
+	HW_TPE_HFU_RCP_LEN_A_ADD_OFS,
+	HW_TPE_HFU_RCP_LEN_A_SUB_DYN,
+	HW_TPE_HFU_RCP_LEN_B_WR,
+	HW_TPE_HFU_RCP_LEN_B_POS_DYN,
+	HW_TPE_HFU_RCP_LEN_B_POS_OFS,
+	HW_TPE_HFU_RCP_LEN_B_ADD_DYN,
+	HW_TPE_HFU_RCP_LEN_B_ADD_OFS,
+	HW_TPE_HFU_RCP_LEN_B_SUB_DYN,
+	HW_TPE_HFU_RCP_LEN_C_WR,
+	HW_TPE_HFU_RCP_LEN_C_POS_DYN,
+	HW_TPE_HFU_RCP_LEN_C_POS_OFS,
+	HW_TPE_HFU_RCP_LEN_C_ADD_DYN,
+	HW_TPE_HFU_RCP_LEN_C_ADD_OFS,
+	HW_TPE_HFU_RCP_LEN_C_SUB_DYN,
+	HW_TPE_HFU_RCP_TTL_WR,
+	HW_TPE_HFU_RCP_TTL_POS_DYN,
+	HW_TPE_HFU_RCP_TTL_POS_OFS,
+	HW_TPE_CSU_RCP_OUTER_L3_CMD,
+	HW_TPE_CSU_RCP_OUTER_L4_CMD,
+	HW_TPE_CSU_RCP_INNER_L3_CMD,
+	HW_TPE_CSU_RCP_INNER_L4_CMD,
+};
+bool hw_mod_tpe_present(struct flow_api_backend_s *be);
+int hw_mod_tpe_alloc(struct flow_api_backend_s *be);
+void hw_mod_tpe_free(struct flow_api_backend_s *be);
+int hw_mod_tpe_reset(struct flow_api_backend_s *be);
+
+int hw_mod_tpe_rpp_rcp_flush(struct flow_api_backend_s *be, int start_idx, int count);
+
+int hw_mod_tpe_rpp_ifr_rcp_flush(struct flow_api_backend_s *be, int start_idx, int count);
+
+int hw_mod_tpe_ifr_rcp_flush(struct flow_api_backend_s *be, int start_idx, int count);
+
+int hw_mod_tpe_ins_rcp_flush(struct flow_api_backend_s *be, int start_idx, int count);
+
+int hw_mod_tpe_rpl_rcp_flush(struct flow_api_backend_s *be, int start_idx, int count);
+
+int hw_mod_tpe_rpl_ext_flush(struct flow_api_backend_s *be, int start_idx, int count);
+
+int hw_mod_tpe_rpl_rpl_flush(struct flow_api_backend_s *be, int start_idx, int count);
+
+int hw_mod_tpe_cpy_rcp_flush(struct flow_api_backend_s *be, int start_idx, int count);
+
+int hw_mod_tpe_hfu_rcp_flush(struct flow_api_backend_s *be, int start_idx, int count);
+
+int hw_mod_tpe_csu_rcp_flush(struct flow_api_backend_s *be, int start_idx, int count);
 
 enum debug_mode_e {
 	FLOW_BACKEND_DEBUG_MODE_NONE = 0x0000,
@@ -813,6 +892,7 @@ struct flow_api_backend_s {
 	struct qsl_func_s qsl;
 	struct slc_lr_func_s slc_lr;
 	struct pdb_func_s pdb;
+	struct tpe_func_s tpe;
 
 	/* NIC attributes */
 	unsigned int num_phy_ports;
diff --git a/drivers/net/ntnic/meson.build b/drivers/net/ntnic/meson.build
index 0415e5a5b2..e2eff3cf1e 100644
--- a/drivers/net/ntnic/meson.build
+++ b/drivers/net/ntnic/meson.build
@@ -56,6 +56,7 @@ sources = files(
         'nthw/flow_api/hw_mod/hw_mod_pdb.c',
         'nthw/flow_api/hw_mod/hw_mod_qsl.c',
         'nthw/flow_api/hw_mod/hw_mod_slc_lr.c',
+        'nthw/flow_api/hw_mod/hw_mod_tpe.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 03946fb52f..9d47aed061 100644
--- a/drivers/net/ntnic/nthw/flow_api/flow_api.c
+++ b/drivers/net/ntnic/nthw/flow_api/flow_api.c
@@ -319,6 +319,15 @@ struct flow_nic_dev *flow_api_create(uint8_t adapter_no, const struct flow_api_b
 	if (init_resource_elements(ndev, RES_FLM_RCP, ndev->be.flm.nb_categories))
 		goto err_exit;
 
+	if (init_resource_elements(ndev, RES_TPE_RCP, ndev->be.tpe.nb_rcp_categories))
+		goto err_exit;
+
+	if (init_resource_elements(ndev, RES_TPE_EXT, ndev->be.tpe.nb_rpl_ext_categories))
+		goto err_exit;
+
+	if (init_resource_elements(ndev, RES_TPE_RPL, ndev->be.tpe.nb_rpl_depth))
+		goto err_exit;
+
 	if (init_resource_elements(ndev, RES_SCRUB_RCP, ndev->be.flm.nb_scrub_profiles))
 		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 118e49f539..13e98ea9ba 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
@@ -27,6 +27,7 @@ static const struct {
 		hw_mod_slc_lr_present
 	},
 	{ "PDB", hw_mod_pdb_alloc, hw_mod_pdb_free, hw_mod_pdb_reset, hw_mod_pdb_present },
+	{ "TPE", hw_mod_tpe_alloc, hw_mod_tpe_free, hw_mod_tpe_reset, hw_mod_tpe_present },
 };
 #define MOD_COUNT (ARRAY_SIZE(module))
 
diff --git a/drivers/net/ntnic/nthw/flow_api/hw_mod/hw_mod_tpe.c b/drivers/net/ntnic/nthw/flow_api/hw_mod/hw_mod_tpe.c
new file mode 100644
index 0000000000..180deefd72
--- /dev/null
+++ b/drivers/net/ntnic/nthw/flow_api/hw_mod/hw_mod_tpe.c
@@ -0,0 +1,277 @@
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2023 Napatech A/S
+ */
+
+#include <stdint.h>
+#include <stdlib.h>
+
+#include "hw_mod_backend.h"
+
+#define _MOD_ "TPE"
+#define _VER_ be->tpe.ver
+
+bool hw_mod_tpe_present(struct flow_api_backend_s *be)
+{
+	return be->iface->get_tpe_present(be->be_dev);
+}
+
+int hw_mod_tpe_alloc(struct flow_api_backend_s *be)
+{
+	int nb;
+	_VER_ = be->iface->get_tpe_version(be->be_dev);
+	NT_LOG(DBG, FILTER, _MOD_ " MODULE VERSION %i.%i\n", VER_MAJOR(_VER_), VER_MINOR(_VER_));
+
+	nb = be->iface->get_nb_tpe_categories(be->be_dev);
+
+	if (nb <= 0)
+		return COUNT_ERROR(tpe_categories);
+
+	be->tpe.nb_rcp_categories = (uint32_t)nb;
+
+	nb = be->iface->get_nb_tpe_ifr_categories(be->be_dev);
+
+	if (nb <= 0)
+		return COUNT_ERROR(tpe_ifr_categories);
+
+	be->tpe.nb_ifr_categories = (uint32_t)nb;
+
+	nb = be->iface->get_nb_tx_cpy_writers(be->be_dev);
+
+	if (nb <= 0)
+		return COUNT_ERROR(tx_cpy_writers);
+
+	be->tpe.nb_cpy_writers = (uint32_t)nb;
+
+	nb = be->iface->get_nb_tx_rpl_depth(be->be_dev);
+
+	if (nb <= 0)
+		return COUNT_ERROR(tx_rpl_depth);
+
+	be->tpe.nb_rpl_depth = (uint32_t)nb;
+
+	nb = be->iface->get_nb_tx_rpl_ext_categories(be->be_dev);
+
+	if (nb <= 0)
+		return COUNT_ERROR(tx_rpl_ext_categories);
+
+	be->tpe.nb_rpl_ext_categories = (uint32_t)nb;
+
+	switch (_VER_) {
+	case 3:
+		if (!callocate_mod((struct common_func_s *)&be->tpe, 10, &be->tpe.v3.rpp_rcp,
+				be->tpe.nb_rcp_categories, sizeof(struct tpe_v1_rpp_v0_rcp_s),
+				&be->tpe.v3.rpp_ifr_rcp, be->tpe.nb_ifr_categories,
+				sizeof(struct tpe_v2_rpp_v1_ifr_rcp_s), &be->tpe.v3.ifr_rcp,
+				be->tpe.nb_ifr_categories, sizeof(struct tpe_v2_ifr_v1_rcp_s),
+
+				&be->tpe.v3.ins_rcp, be->tpe.nb_rcp_categories,
+				sizeof(struct tpe_v1_ins_v1_rcp_s),
+
+				&be->tpe.v3.rpl_rcp, be->tpe.nb_rcp_categories,
+				sizeof(struct tpe_v3_rpl_v4_rcp_s), &be->tpe.v3.rpl_ext,
+				be->tpe.nb_rpl_ext_categories,
+				sizeof(struct tpe_v1_rpl_v2_ext_s), &be->tpe.v3.rpl_rpl,
+				be->tpe.nb_rpl_depth, sizeof(struct tpe_v1_rpl_v2_rpl_s),
+
+				&be->tpe.v3.cpy_rcp,
+				be->tpe.nb_cpy_writers * be->tpe.nb_rcp_categories,
+				sizeof(struct tpe_v1_cpy_v1_rcp_s),
+
+				&be->tpe.v3.hfu_rcp, be->tpe.nb_rcp_categories,
+				sizeof(struct tpe_v1_hfu_v1_rcp_s),
+
+				&be->tpe.v3.csu_rcp, be->tpe.nb_rcp_categories,
+				sizeof(struct tpe_v1_csu_v0_rcp_s)))
+			return -1;
+
+		break;
+
+	default:
+		return UNSUP_VER;
+	}
+
+	return 0;
+}
+
+void hw_mod_tpe_free(struct flow_api_backend_s *be)
+{
+	if (be->tpe.base) {
+		free(be->tpe.base);
+		be->tpe.base = NULL;
+	}
+}
+
+int hw_mod_tpe_reset(struct flow_api_backend_s *be)
+{
+	int err = 0;
+
+	/* Zero entire cache area */
+	zero_module_cache((struct common_func_s *)(&be->tpe));
+
+	NT_LOG(DBG, FILTER, "INIT TPE\n");
+	err |= hw_mod_tpe_rpp_rcp_flush(be, 0, ALL_ENTRIES);
+	err |= hw_mod_tpe_ins_rcp_flush(be, 0, ALL_ENTRIES);
+	err |= hw_mod_tpe_rpl_rcp_flush(be, 0, ALL_ENTRIES);
+	err |= hw_mod_tpe_rpl_ext_flush(be, 0, ALL_ENTRIES);
+	err |= hw_mod_tpe_rpl_rpl_flush(be, 0, ALL_ENTRIES);
+	err |= hw_mod_tpe_cpy_rcp_flush(be, 0, ALL_ENTRIES);
+	err |= hw_mod_tpe_hfu_rcp_flush(be, 0, ALL_ENTRIES);
+	err |= hw_mod_tpe_csu_rcp_flush(be, 0, ALL_ENTRIES);
+	err |= hw_mod_tpe_rpp_ifr_rcp_flush(be, 0, ALL_ENTRIES);
+	err |= hw_mod_tpe_ifr_rcp_flush(be, 0, ALL_ENTRIES);
+
+	return err;
+}
+
+/*
+ * RPP_IFR_RCP
+ */
+
+int hw_mod_tpe_rpp_ifr_rcp_flush(struct flow_api_backend_s *be, int start_idx, int count)
+{
+	if (count == ALL_ENTRIES)
+		count = be->tpe.nb_ifr_categories;
+
+	if ((unsigned int)(start_idx + count) > be->tpe.nb_ifr_categories)
+		return INDEX_TOO_LARGE;
+
+	return be->iface->tpe_rpp_ifr_rcp_flush(be->be_dev, &be->tpe, start_idx, count);
+}
+
+/*
+ * RPP_RCP
+ */
+
+int hw_mod_tpe_rpp_rcp_flush(struct flow_api_backend_s *be, int start_idx, int count)
+{
+	if (count == ALL_ENTRIES)
+		count = be->tpe.nb_rcp_categories;
+
+	if ((unsigned int)(start_idx + count) > be->tpe.nb_rcp_categories)
+		return INDEX_TOO_LARGE;
+
+	return be->iface->tpe_rpp_rcp_flush(be->be_dev, &be->tpe, start_idx, count);
+}
+
+/*
+ * IFR_RCP
+ */
+
+int hw_mod_tpe_ifr_rcp_flush(struct flow_api_backend_s *be, int start_idx, int count)
+{
+	if (count == ALL_ENTRIES)
+		count = be->tpe.nb_ifr_categories;
+
+	if ((unsigned int)(start_idx + count) > be->tpe.nb_ifr_categories)
+		return INDEX_TOO_LARGE;
+
+	return be->iface->tpe_ifr_rcp_flush(be->be_dev, &be->tpe, start_idx, count);
+}
+
+/*
+ * INS_RCP
+ */
+
+int hw_mod_tpe_ins_rcp_flush(struct flow_api_backend_s *be, int start_idx, int count)
+{
+	if (count == ALL_ENTRIES)
+		count = be->tpe.nb_rcp_categories;
+
+	if ((unsigned int)(start_idx + count) > be->tpe.nb_rcp_categories)
+		return INDEX_TOO_LARGE;
+
+	return be->iface->tpe_ins_rcp_flush(be->be_dev, &be->tpe, start_idx, count);
+}
+
+/*
+ * RPL_RCP
+ */
+
+int hw_mod_tpe_rpl_rcp_flush(struct flow_api_backend_s *be, int start_idx, int count)
+{
+	if (count == ALL_ENTRIES)
+		count = be->tpe.nb_rcp_categories;
+
+	if ((unsigned int)(start_idx + count) > be->tpe.nb_rcp_categories)
+		return INDEX_TOO_LARGE;
+
+	return be->iface->tpe_rpl_rcp_flush(be->be_dev, &be->tpe, start_idx, count);
+}
+
+/*
+ * RPL_EXT
+ */
+
+int hw_mod_tpe_rpl_ext_flush(struct flow_api_backend_s *be, int start_idx, int count)
+{
+	if (count == ALL_ENTRIES)
+		count = be->tpe.nb_rpl_ext_categories;
+
+	if ((unsigned int)(start_idx + count) > be->tpe.nb_rpl_ext_categories)
+		return INDEX_TOO_LARGE;
+
+	return be->iface->tpe_rpl_ext_flush(be->be_dev, &be->tpe, start_idx, count);
+}
+
+/*
+ * RPL_RPL
+ */
+
+int hw_mod_tpe_rpl_rpl_flush(struct flow_api_backend_s *be, int start_idx, int count)
+{
+	if (count == ALL_ENTRIES)
+		count = be->tpe.nb_rpl_depth;
+
+	if ((unsigned int)(start_idx + count) > be->tpe.nb_rpl_depth)
+		return INDEX_TOO_LARGE;
+
+	return be->iface->tpe_rpl_rpl_flush(be->be_dev, &be->tpe, start_idx, count);
+}
+
+/*
+ * CPY_RCP
+ */
+
+int hw_mod_tpe_cpy_rcp_flush(struct flow_api_backend_s *be, int start_idx, int count)
+{
+	const uint32_t cpy_size = be->tpe.nb_cpy_writers * be->tpe.nb_rcp_categories;
+
+	if (count == ALL_ENTRIES)
+		count = cpy_size;
+
+	if ((unsigned int)(start_idx + count) > cpy_size)
+		return INDEX_TOO_LARGE;
+
+	return be->iface->tpe_cpy_rcp_flush(be->be_dev, &be->tpe, start_idx, count);
+}
+
+/*
+ * HFU_RCP
+ */
+
+int hw_mod_tpe_hfu_rcp_flush(struct flow_api_backend_s *be, int start_idx, int count)
+{
+	if (count == ALL_ENTRIES)
+		count = be->tpe.nb_rcp_categories;
+
+	if ((unsigned int)(start_idx + count) > be->tpe.nb_rcp_categories)
+		return INDEX_TOO_LARGE;
+
+	return be->iface->tpe_hfu_rcp_flush(be->be_dev, &be->tpe, start_idx, count);
+}
+
+/*
+ * CSU_RCP
+ */
+
+int hw_mod_tpe_csu_rcp_flush(struct flow_api_backend_s *be, int start_idx, int count)
+{
+	if (count == ALL_ENTRIES)
+		count = be->tpe.nb_rcp_categories;
+
+	if ((unsigned int)(start_idx + count) > be->tpe.nb_rcp_categories)
+		return INDEX_TOO_LARGE;
+
+	return be->iface->tpe_csu_rcp_flush(be->be_dev, &be->tpe, start_idx, count);
+}
-- 
2.45.0