Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 260 insertions, 0 deletions

diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.h b/drivers/net/ethernet/qlogic/qed/qed_ll2.h
new file mode 100644
index 000000000..a174c6fc6
--- /dev/null
+++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.h
@@ -0,0 +1,260 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
+/* QLogic qed NIC Driver
+ * Copyright (c) 2015-2017  QLogic Corporation
+ * Copyright (c) 2019-2020 Marvell International Ltd.
+ */
+
+#ifndef _QED_LL2_H
+#define _QED_LL2_H
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/qed/qed_chain.h>
+#include <linux/qed/qed_ll2_if.h>
+#include "qed.h"
+#include "qed_hsi.h"
+#include "qed_sp.h"
+
+#define QED_MAX_NUM_OF_LL2_CONNECTIONS                    (4)
+/* LL2 queues handles will be split as follows:
+ * first will be legacy queues, and then the ctx based queues.
+ */
+#define QED_MAX_NUM_OF_LL2_CONNS_PF            (4)
+#define QED_MAX_NUM_OF_LEGACY_LL2_CONNS_PF   (3)
+
+#define QED_MAX_NUM_OF_CTX_LL2_CONNS_PF	\
+	(QED_MAX_NUM_OF_LL2_CONNS_PF - QED_MAX_NUM_OF_LEGACY_LL2_CONNS_PF)
+
+#define QED_LL2_LEGACY_CONN_BASE_PF     0
+#define QED_LL2_CTX_CONN_BASE_PF        QED_MAX_NUM_OF_LEGACY_LL2_CONNS_PF
+
+struct qed_ll2_rx_packet {
+	struct list_head list_entry;
+	struct core_rx_bd_with_buff_len *rxq_bd;
+	dma_addr_t rx_buf_addr;
+	u16 buf_length;
+	void *cookie;
+	u8 placement_offset;
+	u16 parse_flags;
+	u16 packet_length;
+	u16 vlan;
+	u32 opaque_data[2];
+};
+
+struct qed_ll2_tx_packet {
+	struct list_head list_entry;
+	u16 bd_used;
+	bool notify_fw;
+	void *cookie;
+	/* Flexible Array of bds_set determined by max_bds_per_packet */
+	struct {
+		struct core_tx_bd *txq_bd;
+		dma_addr_t tx_frag;
+		u16 frag_len;
+	} bds_set[];
+};
+
+struct qed_ll2_rx_queue {
+	/* Lock protecting the Rx queue manipulation */
+	spinlock_t lock;
+	struct qed_chain rxq_chain;
+	struct qed_chain rcq_chain;
+	u8 rx_sb_index;
+	u8 ctx_based;
+	bool b_cb_registered;
+	__le16 *p_fw_cons;
+	struct list_head active_descq;
+	struct list_head free_descq;
+	struct list_head posting_descq;
+	struct qed_ll2_rx_packet *descq_array;
+	void __iomem *set_prod_addr;
+	struct core_pwm_prod_update_data db_data;
+};
+
+struct qed_ll2_tx_queue {
+	/* Lock protecting the Tx queue manipulation */
+	spinlock_t lock;
+	struct qed_chain txq_chain;
+	u8 tx_sb_index;
+	bool b_cb_registered;
+	__le16 *p_fw_cons;
+	struct list_head active_descq;
+	struct list_head free_descq;
+	struct list_head sending_descq;
+	u16 cur_completing_bd_idx;
+	void __iomem *doorbell_addr;
+	struct core_db_data db_msg;
+	u16 bds_idx;
+	u16 cur_send_frag_num;
+	u16 cur_completing_frag_num;
+	bool b_completing_packet;
+	void *descq_mem; /* memory for variable sized qed_ll2_tx_packet*/
+	struct qed_ll2_tx_packet *cur_send_packet;
+	struct qed_ll2_tx_packet cur_completing_packet;
+};
+
+struct qed_ll2_info {
+	/* Lock protecting the state of LL2 */
+	struct mutex mutex;
+
+	struct qed_ll2_acquire_data_inputs input;
+	u32 cid;
+	u8 my_id;
+	u8 queue_id;
+	u8 tx_stats_id;
+	bool b_active;
+	enum core_tx_dest tx_dest;
+	u8 tx_stats_en;
+	bool main_func_queue;
+	struct qed_ll2_cbs cbs;
+	struct qed_ll2_rx_queue rx_queue;
+	struct qed_ll2_tx_queue tx_queue;
+};
+
+extern const struct qed_ll2_ops qed_ll2_ops_pass;
+
+/**
+ * qed_ll2_acquire_connection(): Allocate resources,
+ *                               starts rx & tx (if relevant) queues pair.
+ *                               Provides connecion handler as output
+ *                               parameter.
+ *
+ * @cxt: Pointer to the hw-function [opaque to some].
+ * @data: Describes connection parameters.
+ *
+ * Return: Int.
+ */
+int qed_ll2_acquire_connection(void *cxt, struct qed_ll2_acquire_data *data);
+
+/**
+ * qed_ll2_establish_connection(): start previously allocated LL2 queues pair
+ *
+ * @cxt: Pointer to the hw-function [opaque to some].
+ * @connection_handle: LL2 connection's handle obtained from
+ *                     qed_ll2_require_connection.
+ *
+ * Return: 0 on success, failure otherwise.
+ */
+int qed_ll2_establish_connection(void *cxt, u8 connection_handle);
+
+/**
+ * qed_ll2_post_rx_buffer(): Submit buffers to LL2 Rx queue.
+ *
+ * @cxt: Pointer to the hw-function [opaque to some].
+ * @connection_handle: LL2 connection's handle obtained from
+ *                     qed_ll2_require_connection.
+ * @addr: RX (physical address) buffers to submit.
+ * @buf_len: Buffer Len.
+ * @cookie: Cookie.
+ * @notify_fw: Produce corresponding Rx BD immediately.
+ *
+ * Return: 0 on success, failure otherwise.
+ */
+int qed_ll2_post_rx_buffer(void *cxt,
+			   u8 connection_handle,
+			   dma_addr_t addr,
+			   u16 buf_len, void *cookie, u8 notify_fw);
+
+/**
+ * qed_ll2_prepare_tx_packet(): Request for start Tx BD
+ *				to prepare Tx packet submission to FW.
+ *
+ * @cxt: Pointer to the hw-function [opaque to some].
+ * @connection_handle: Connection handle.
+ * @pkt: Info regarding the tx packet.
+ * @notify_fw: Issue doorbell to fw for this packet.
+ *
+ * Return: 0 on success, failure otherwise.
+ */
+int qed_ll2_prepare_tx_packet(void *cxt,
+			      u8 connection_handle,
+			      struct qed_ll2_tx_pkt_info *pkt,
+			      bool notify_fw);
+
+/**
+ * qed_ll2_release_connection(): Releases resources allocated for LL2
+ *                               connection.
+ *
+ * @cxt: Pointer to the hw-function [opaque to some].
+ * @connection_handle: LL2 connection's handle obtained from
+ *                     qed_ll2_require_connection.
+ *
+ * Return: Void.
+ */
+void qed_ll2_release_connection(void *cxt, u8 connection_handle);
+
+/**
+ * qed_ll2_set_fragment_of_tx_packet(): Provides fragments to fill
+ *                                      Tx BD of BDs requested by
+ *                                      qed_ll2_prepare_tx_packet
+ *
+ * @cxt: Pointer to the hw-function [opaque to some].
+ * @connection_handle: LL2 connection's handle obtained from
+ *                     qed_ll2_require_connection.
+ * @addr: Address.
+ * @nbytes: Number of bytes.
+ *
+ * Return: 0 on success, failure otherwise.
+ */
+int qed_ll2_set_fragment_of_tx_packet(void *cxt,
+				      u8 connection_handle,
+				      dma_addr_t addr, u16 nbytes);
+
+/**
+ * qed_ll2_terminate_connection(): Stops Tx/Rx queues
+ *
+ * @cxt: Pointer to the hw-function [opaque to some].
+ * @connection_handle: LL2 connection's handle obtained from
+ *                    qed_ll2_require_connection.
+ *
+ * Return: 0 on success, failure otherwise.
+ */
+int qed_ll2_terminate_connection(void *cxt, u8 connection_handle);
+
+/**
+ * qed_ll2_get_stats(): Get LL2 queue's statistics
+ *
+ * @cxt: Pointer to the hw-function [opaque to some].
+ * @connection_handle: LL2 connection's handle obtained from
+ *                    qed_ll2_require_connection.
+ * @p_stats: Pointer Status.
+ *
+ * Return: 0 on success, failure otherwise.
+ */
+int qed_ll2_get_stats(void *cxt,
+		      u8 connection_handle, struct qed_ll2_stats *p_stats);
+
+/**
+ * qed_ll2_alloc(): Allocates LL2 connections set.
+ *
+ * @p_hwfn: HW device data.
+ *
+ * Return: Int.
+ */
+int qed_ll2_alloc(struct qed_hwfn *p_hwfn);
+
+/**
+ * qed_ll2_setup(): Inits LL2 connections set.
+ *
+ * @p_hwfn: HW device data.
+ *
+ * Return: Void.
+ *
+ */
+void qed_ll2_setup(struct qed_hwfn *p_hwfn);
+
+/**
+ * qed_ll2_free(): Releases LL2 connections set
+ *
+ * @p_hwfn: HW device data.
+ *
+ * Return: Void.
+ *
+ */
+void qed_ll2_free(struct qed_hwfn *p_hwfn);
+
+#endif