Merge branch 'octeon_ep_vf-driver'

Shinas Rasheed says:

====================
add octeon_ep_vf driver

This driver implements networking functionality of Marvell's Octeon
PCI Endpoint NIC VF.

This driver support following devices:
 * Network controller: Cavium, Inc. Device b203
 * Network controller: Cavium, Inc. Device b403
 * Network controller: Cavium, Inc. Device b103
 * Network controller: Cavium, Inc. Device b903
 * Network controller: Cavium, Inc. Device ba03
 * Network controller: Cavium, Inc. Device bc03
 * Network controller: Cavium, Inc. Device bd03

Changes:
V2:
  - Removed linux/version.h header file from inclusion in
    octep_vf_main.c
  - Corrected Makefile entry to include building octep_vf_mbox.c in
    [6/8] patch.
  - Removed redundant vzalloc pointer cast and vfree pointer check in
    [6/8] patch.

V1: https://lore.kernel.org/all/20231221092844.2885872-1-srasheed@marvell.com/
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Documentation/networking/device_drivers/ethernet/index.rst

@@ -42,6 +42,7 @@ Contents:
    intel/ice
    marvell/octeontx2
    marvell/octeon_ep
+   marvell/octeon_ep_vf
    mellanox/mlx5/index
    microsoft/netvsc
    neterion/s2io

Documentation/networking/device_drivers/ethernet/marvell/octeon_ep_vf.rst

+.. SPDX-License-Identifier: GPL-2.0+
+
+=======================================================================
+Linux kernel networking driver for Marvell's Octeon PCI Endpoint NIC VF
+=======================================================================
+
+Network driver for Marvell's Octeon PCI EndPoint NIC VF.
+Copyright (c) 2020 Marvell International Ltd.
+
+Overview
+========
+This driver implements networking functionality of Marvell's Octeon PCI
+EndPoint NIC VF.
+
+Supported Devices
+=================
+Currently, this driver support following devices:
+ * Network controller: Cavium, Inc. Device b203
+ * Network controller: Cavium, Inc. Device b403
+ * Network controller: Cavium, Inc. Device b103
+ * Network controller: Cavium, Inc. Device b903
+ * Network controller: Cavium, Inc. Device ba03
+ * Network controller: Cavium, Inc. Device bc03
+ * Network controller: Cavium, Inc. Device bd03

MAINTAINERS

@@ -12861,6 +12861,15 @@ L:	netdev@vger.kernel.org
 S:	Supported
 F:	drivers/net/ethernet/marvell/octeon_ep
 
+MARVELL OCTEON ENDPOINT VF DRIVER
+M:	Veerasenareddy Burru <vburru@marvell.com>
+M:	Sathesh Edara <sedara@marvell.com>
+M:	Shinas Rasheed <srasheed@marvell.com>
+M:	Satananda Burla <sburla@marvell.com>
+L:	netdev@vger.kernel.org
+S:	Supported
+F:	drivers/net/ethernet/marvell/octeon_ep_vf
+
 MARVELL OCTEONTX2 PHYSICAL FUNCTION DRIVER
 M:	Sunil Goutham <sgoutham@marvell.com>
 M:	Geetha sowjanya <gakula@marvell.com>

drivers/net/ethernet/marvell/Kconfig

@@ -180,6 +180,7 @@ config SKY2_DEBUG
 
 source "drivers/net/ethernet/marvell/octeontx2/Kconfig"
 source "drivers/net/ethernet/marvell/octeon_ep/Kconfig"
+source "drivers/net/ethernet/marvell/octeon_ep_vf/Kconfig"
 source "drivers/net/ethernet/marvell/prestera/Kconfig"
 
 endif # NET_VENDOR_MARVELL

drivers/net/ethernet/marvell/Makefile

@@ -12,5 +12,6 @@ obj-$(CONFIG_PXA168_ETH) += pxa168_eth.o
 obj-$(CONFIG_SKGE) += skge.o
 obj-$(CONFIG_SKY2) += sky2.o
 obj-y		+= octeon_ep/
+obj-y		+= octeon_ep_vf/
 obj-y		+= octeontx2/
 obj-y		+= prestera/

drivers/net/ethernet/marvell/octeon_ep_vf/Kconfig

+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Marvell's Octeon PCI Endpoint NIC VF Driver Configuration
+#
+
+config OCTEON_EP_VF
+	tristate "Marvell Octeon PCI Endpoint NIC VF Driver"
+	depends on 64BIT
+	depends on PCI
+	help
+	  This driver supports networking functionality of Marvell's
+	  Octeon PCI Endpoint NIC VF.
+
+	  To know the list of devices supported by this driver, refer
+	  documentation in
+	  <file:Documentation/networking/device_drivers/ethernet/marvell/octeon_ep_vf.rst>.
+
+	  To compile this drivers as a module, choose M here. Name of the
+	  module is octeon_ep_vf.

drivers/net/ethernet/marvell/octeon_ep_vf/Makefile

+# SPDX-License-Identifier: GPL-2.0
+#
+# Network driver for Marvell's Octeon PCI Endpoint NIC VF
+#
+
+obj-$(CONFIG_OCTEON_EP_VF) += octeon_ep_vf.o
+
+octeon_ep_vf-y := octep_vf_main.o octep_vf_cn9k.o octep_vf_cnxk.o \
+		  octep_vf_tx.o octep_vf_rx.o octep_vf_mbox.o \
+		  octep_vf_ethtool.o

drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_config.h

+/* SPDX-License-Identifier: GPL-2.0 */
+/* Marvell Octeon EP (EndPoint) VF Ethernet Driver
+ *
+ * Copyright (C) 2020 Marvell.
+ *
+ */
+
+#ifndef _OCTEP_VF_CONFIG_H_
+#define _OCTEP_VF_CONFIG_H_
+
+/* Tx instruction types by length */
+#define OCTEP_VF_32BYTE_INSTR  32
+#define OCTEP_VF_64BYTE_INSTR  64
+
+/* Tx Queue: maximum descriptors per ring */
+#define OCTEP_VF_IQ_MAX_DESCRIPTORS    1024
+/* Minimum input (Tx) requests to be enqueued to ring doorbell */
+#define OCTEP_VF_DB_MIN                8
+/* Packet threshold for Tx queue interrupt */
+#define OCTEP_VF_IQ_INTR_THRESHOLD     0x0
+
+/* Minimum watermark for backpressure */
+#define OCTEP_VF_OQ_WMARK_MIN 256
+
+/* Rx Queue: maximum descriptors per ring */
+#define OCTEP_VF_OQ_MAX_DESCRIPTORS   1024
+
+/* Rx buffer size: Use page size buffers.
+ * Build skb from allocated page buffer once the packet is received.
+ * When a gathered packet is received, make head page as skb head and
+ * page buffers in consecutive Rx descriptors as fragments.
+ */
+#define OCTEP_VF_OQ_BUF_SIZE          (SKB_WITH_OVERHEAD(PAGE_SIZE))
+#define OCTEP_VF_OQ_PKTS_PER_INTR     128
+#define OCTEP_VF_OQ_REFILL_THRESHOLD  (OCTEP_VF_OQ_MAX_DESCRIPTORS / 4)
+
+#define OCTEP_VF_OQ_INTR_PKT_THRESHOLD   1
+#define OCTEP_VF_OQ_INTR_TIME_THRESHOLD  10
+
+#define OCTEP_VF_MSIX_NAME_SIZE      (IFNAMSIZ + 32)
+
+/* Tx Queue wake threshold
+ * wakeup a stopped Tx queue if minimum 2 descriptors are available.
+ * Even a skb with fragments consume only one Tx queue descriptor entry.
+ */
+#define OCTEP_VF_WAKE_QUEUE_THRESHOLD 2
+
+/* Minimum MTU supported by Octeon network interface */
+#define OCTEP_VF_MIN_MTU        ETH_MIN_MTU
+/* Maximum MTU supported by Octeon interface*/
+#define OCTEP_VF_MAX_MTU        (10000 - (ETH_HLEN + ETH_FCS_LEN))
+/* Default MTU */
+#define OCTEP_VF_DEFAULT_MTU    1500
+
+/* Macros to get octeon config params */
+#define CFG_GET_IQ_CFG(cfg)             ((cfg)->iq)
+#define CFG_GET_IQ_NUM_DESC(cfg)        ((cfg)->iq.num_descs)
+#define CFG_GET_IQ_INSTR_TYPE(cfg)      ((cfg)->iq.instr_type)
+#define CFG_GET_IQ_INSTR_SIZE(cfg)      (64)
+#define CFG_GET_IQ_DB_MIN(cfg)          ((cfg)->iq.db_min)
+#define CFG_GET_IQ_INTR_THRESHOLD(cfg)  ((cfg)->iq.intr_threshold)
+
+#define CFG_GET_OQ_NUM_DESC(cfg)          ((cfg)->oq.num_descs)
+#define CFG_GET_OQ_BUF_SIZE(cfg)          ((cfg)->oq.buf_size)
+#define CFG_GET_OQ_REFILL_THRESHOLD(cfg)  ((cfg)->oq.refill_threshold)
+#define CFG_GET_OQ_INTR_PKT(cfg)          ((cfg)->oq.oq_intr_pkt)
+#define CFG_GET_OQ_INTR_TIME(cfg)         ((cfg)->oq.oq_intr_time)
+#define CFG_GET_OQ_WMARK(cfg)             ((cfg)->oq.wmark)
+
+#define CFG_GET_PORTS_ACTIVE_IO_RINGS(cfg) ((cfg)->ring_cfg.active_io_rings)
+#define CFG_GET_PORTS_MAX_IO_RINGS(cfg) ((cfg)->ring_cfg.max_io_rings)
+
+#define CFG_GET_CORE_TICS_PER_US(cfg)     ((cfg)->core_cfg.core_tics_per_us)
+#define CFG_GET_COPROC_TICS_PER_US(cfg)   ((cfg)->core_cfg.coproc_tics_per_us)
+
+#define CFG_GET_IOQ_MSIX(cfg)            ((cfg)->msix_cfg.ioq_msix)
+
+/* Hardware Tx Queue configuration. */
+struct octep_vf_iq_config {
+	/* Size of the Input queue (number of commands) */
+	u16 num_descs;
+
+	/* Command size - 32 or 64 bytes */
+	u16 instr_type;
+
+	/* Minimum number of commands pending to be posted to Octeon before driver
+	 * hits the Input queue doorbell.
+	 */
+	u16 db_min;
+
+	/* Trigger the IQ interrupt when processed cmd count reaches
+	 * this level.
+	 */
+	u32 intr_threshold;
+};
+
+/* Hardware Rx Queue configuration. */
+struct octep_vf_oq_config {
+	/* Size of Output queue (number of descriptors) */
+	u16 num_descs;
+
+	/* Size of buffer in this Output queue. */
+	u16 buf_size;
+
+	/* The number of buffers that were consumed during packet processing
+	 * by the driver on this Output queue before the driver attempts to
+	 * replenish the descriptor ring with new buffers.
+	 */
+	u16 refill_threshold;
+
+	/* Interrupt Coalescing (Packet Count). Octeon will interrupt the host
+	 * only if it sent as many packets as specified by this field.
+	 * The driver usually does not use packet count interrupt coalescing.
+	 */
+	u32 oq_intr_pkt;
+
+	/* Interrupt Coalescing (Time Interval). Octeon will interrupt the host
+	 * if at least one packet was sent in the time interval specified by
+	 * this field. The driver uses time interval interrupt coalescing by
+	 * default. The time is specified in microseconds.
+	 */
+	u32 oq_intr_time;
+
+	/* Water mark for backpressure.
+	 * Output queue sends backpressure signal to source when
+	 * free buffer count falls below wmark.
+	 */
+	u32 wmark;
+};
+
+/* Tx/Rx configuration */
+struct octep_vf_ring_config {
+	/* Max number of IOQs */
+	u16 max_io_rings;
+
+	/* Number of active IOQs */
+	u16 active_io_rings;
+};
+
+/* Octeon MSI-x config. */
+struct octep_vf_msix_config {
+	/* Number of IOQ interrupts */
+	u16 ioq_msix;
+};
+
+/* Data Structure to hold configuration limits and active config */
+struct octep_vf_config {
+	/* Input Queue attributes. */
+	struct octep_vf_iq_config iq;
+
+	/* Output Queue attributes. */
+	struct octep_vf_oq_config oq;
+
+	/* MSI-X interrupt config */
+	struct octep_vf_msix_config msix_cfg;
+
+	/* NIC VF ring Configuration */
+	struct octep_vf_ring_config ring_cfg;
+};
+#endif /* _OCTEP_VF_CONFIG_H_ */

drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.h

+/* SPDX-License-Identifier: GPL-2.0 */
+/* Marvell Octeon EP (EndPoint) VF Ethernet Driver
+ *
+ * Copyright (C) 2020 Marvell.
+ *
+ */
+
+#ifndef _OCTEP_VF_MAIN_H_
+#define _OCTEP_VF_MAIN_H_
+
+#include "octep_vf_tx.h"
+#include "octep_vf_rx.h"
+#include "octep_vf_mbox.h"
+
+#define OCTEP_VF_DRV_NAME	"octeon_ep_vf"
+#define OCTEP_VF_DRV_STRING	"Marvell Octeon EndPoint NIC VF Driver"
+
+#define  OCTEP_PCI_DEVICE_ID_CN93_VF   0xB203    //93xx VF
+#define  OCTEP_PCI_DEVICE_ID_CNF95N_VF 0xB403    //95N VF
+#define  OCTEP_PCI_DEVICE_ID_CN98_VF	0xB103
+#define  OCTEP_PCI_DEVICE_ID_CN10KA_VF  0xB903
+#define  OCTEP_PCI_DEVICE_ID_CNF10KA_VF 0xBA03
+#define  OCTEP_PCI_DEVICE_ID_CNF10KB_VF 0xBC03
+#define  OCTEP_PCI_DEVICE_ID_CN10KB_VF  0xBD03
+
+#define  OCTEP_VF_MAX_QUEUES   63
+#define  OCTEP_VF_MAX_IQ       OCTEP_VF_MAX_QUEUES
+#define  OCTEP_VF_MAX_OQ       OCTEP_VF_MAX_QUEUES
+
+#define OCTEP_VF_MAX_MSIX_VECTORS OCTEP_VF_MAX_OQ
+
+#define  OCTEP_VF_IQ_INTR_RESEND_BIT  59
+#define  OCTEP_VF_OQ_INTR_RESEND_BIT  59
+
+#define  IQ_INSTR_PENDING(iq)  ({ typeof(iq) iq__ = (iq); \
+				  ((iq__)->host_write_index - (iq__)->flush_index) & \
+				  (iq__)->ring_size_mask; \
+				})
+#define  IQ_INSTR_SPACE(iq)    ({ typeof(iq) iq_ = (iq); \
+				  (iq_)->max_count - IQ_INSTR_PENDING(iq_); \
+				})
+
+#ifndef UINT64_MAX
+#define UINT64_MAX		((u64)(~((u64)0)))        /* 0xFFFFFFFFFFFFFFFF */
+#endif
+
+/* PCI address space mapping information.
+ * Each of the 3 address spaces given by BAR0, BAR2 and BAR4 of
+ * Octeon gets mapped to different physical address spaces in
+ * the kernel.
+ */
+struct octep_vf_mmio {
+	/* The physical address to which the PCI address space is mapped. */
+	u8 __iomem *hw_addr;
+
+	/* Flag indicating the mapping was successful. */
+	int mapped;
+};
+
+struct octep_vf_hw_ops {
+	void (*setup_iq_regs)(struct octep_vf_device *oct, int q);
+	void (*setup_oq_regs)(struct octep_vf_device *oct, int q);
+	void (*setup_mbox_regs)(struct octep_vf_device *oct, int mbox);
+
+	irqreturn_t (*non_ioq_intr_handler)(void *ioq_vector);
+	irqreturn_t (*ioq_intr_handler)(void *ioq_vector);
+	void (*reinit_regs)(struct octep_vf_device *oct);
+	u32  (*update_iq_read_idx)(struct octep_vf_iq *iq);
+
+	void (*enable_interrupts)(struct octep_vf_device *oct);
+	void (*disable_interrupts)(struct octep_vf_device *oct);
+
+	void (*enable_io_queues)(struct octep_vf_device *oct);
+	void (*disable_io_queues)(struct octep_vf_device *oct);
+	void (*enable_iq)(struct octep_vf_device *oct, int q);
+	void (*disable_iq)(struct octep_vf_device *oct, int q);
+	void (*enable_oq)(struct octep_vf_device *oct, int q);
+	void (*disable_oq)(struct octep_vf_device *oct, int q);
+	void (*reset_io_queues)(struct octep_vf_device *oct);
+	void (*dump_registers)(struct octep_vf_device *oct);
+};
+
+/* Octeon mailbox data */
+struct octep_vf_mbox_data {
+	/* Holds the offset of received data via mailbox. */
+	u32 data_index;
+
+	/* Holds the received data via mailbox. */
+	u8 recv_data[OCTEP_PFVF_MBOX_MAX_DATA_BUF_SIZE];
+};
+
+/* wrappers around work structs */
+struct octep_vf_mbox_wk {
+	struct work_struct work;
+	void *ctxptr;
+};
+
+/* Octeon device mailbox */
+struct octep_vf_mbox {
+	/* A mutex to protect access to this q_mbox. */
+	struct mutex lock;
+
+	u32 state;
+
+	/* SLI_MAC_PF_MBOX_INT for PF, SLI_PKT_MBOX_INT for VF. */
+	u8 __iomem *mbox_int_reg;
+
+	/* SLI_PKT_PF_VF_MBOX_SIG(0) for PF,
+	 * SLI_PKT_PF_VF_MBOX_SIG(1) for VF.
+	 */
+	u8 __iomem *mbox_write_reg;
+
+	/* SLI_PKT_PF_VF_MBOX_SIG(1) for PF,
+	 * SLI_PKT_PF_VF_MBOX_SIG(0) for VF.
+	 */
+	u8 __iomem *mbox_read_reg;
+
+	/* Octeon mailbox data */
+	struct octep_vf_mbox_data mbox_data;
+
+	/* Octeon mailbox work handler to process Mbox messages */
+	struct octep_vf_mbox_wk wk;
+};
+
+/* Tx/Rx queue vector per interrupt. */
+struct octep_vf_ioq_vector {
+	char name[OCTEP_VF_MSIX_NAME_SIZE];
+	struct napi_struct napi;
+	struct octep_vf_device *octep_vf_dev;
+	struct octep_vf_iq *iq;
+	struct octep_vf_oq *oq;
+	cpumask_t affinity_mask;
+};
+
+/* Octeon hardware/firmware offload capability flags. */
+#define OCTEP_VF_CAP_TX_CHECKSUM BIT(0)
+#define OCTEP_VF_CAP_RX_CHECKSUM BIT(1)
+#define OCTEP_VF_CAP_TSO         BIT(2)
+
+/* Link modes */
+enum octep_vf_link_mode_bit_indices {
+	OCTEP_VF_LINK_MODE_10GBASE_T    = 0,
+	OCTEP_VF_LINK_MODE_10GBASE_R,
+	OCTEP_VF_LINK_MODE_10GBASE_CR,
+	OCTEP_VF_LINK_MODE_10GBASE_KR,
+	OCTEP_VF_LINK_MODE_10GBASE_LR,
+	OCTEP_VF_LINK_MODE_10GBASE_SR,
+	OCTEP_VF_LINK_MODE_25GBASE_CR,
+	OCTEP_VF_LINK_MODE_25GBASE_KR,
+	OCTEP_VF_LINK_MODE_25GBASE_SR,
+	OCTEP_VF_LINK_MODE_40GBASE_CR4,
+	OCTEP_VF_LINK_MODE_40GBASE_KR4,
+	OCTEP_VF_LINK_MODE_40GBASE_LR4,
+	OCTEP_VF_LINK_MODE_40GBASE_SR4,
+	OCTEP_VF_LINK_MODE_50GBASE_CR2,
+	OCTEP_VF_LINK_MODE_50GBASE_KR2,
+	OCTEP_VF_LINK_MODE_50GBASE_SR2,
+	OCTEP_VF_LINK_MODE_50GBASE_CR,
+	OCTEP_VF_LINK_MODE_50GBASE_KR,
+	OCTEP_VF_LINK_MODE_50GBASE_LR,
+	OCTEP_VF_LINK_MODE_50GBASE_SR,
+	OCTEP_VF_LINK_MODE_100GBASE_CR4,
+	OCTEP_VF_LINK_MODE_100GBASE_KR4,
+	OCTEP_VF_LINK_MODE_100GBASE_LR4,
+	OCTEP_VF_LINK_MODE_100GBASE_SR4,
+	OCTEP_VF_LINK_MODE_NBITS
+};
+
+/* Hardware interface link state information. */
+struct octep_vf_iface_link_info {
+	/* Bitmap of Supported link speeds/modes. */
+	u64 supported_modes;
+
+	/* Bitmap of Advertised link speeds/modes. */
+	u64 advertised_modes;
+
+	/* Negotiated link speed in Mbps. */
+	u32 speed;
+
+	/* MTU */
+	u16 mtu;
+
+	/* Autonegotiation state. */
+#define OCTEP_VF_LINK_MODE_AUTONEG_SUPPORTED   BIT(0)
+#define OCTEP_VF_LINK_MODE_AUTONEG_ADVERTISED  BIT(1)
+	u8 autoneg;
+
+	/* Pause frames setting. */
+#define OCTEP_VF_LINK_MODE_PAUSE_SUPPORTED   BIT(0)
+#define OCTEP_VF_LINK_MODE_PAUSE_ADVERTISED  BIT(1)
+	u8 pause;
+
+	/* Admin state of the link (ifconfig <iface> up/down */
+	u8  admin_up;
+
+	/* Operational state of the link: physical link is up down */
+	u8  oper_up;
+};
+
+/* Hardware interface stats information. */
+struct octep_vf_iface_rxtx_stats {
+	/* Hardware Interface Rx statistics */
+	struct octep_vf_iface_rx_stats iface_rx_stats;
+
+	/* Hardware Interface Tx statistics */
+	struct octep_vf_iface_tx_stats iface_tx_stats;
+};
+
+struct octep_vf_fw_info {
+	/* pkind value to be used in every Tx hardware descriptor */
+	u8 pkind;
+	/* front size data */
+	u8 fsz;
+	/* supported rx offloads OCTEP_VF_RX_OFFLOAD_* */
+	u16 rx_ol_flags;
+	/* supported tx offloads OCTEP_VF_TX_OFFLOAD_* */
+	u16 tx_ol_flags;
+};
+
+/* The Octeon device specific private data structure.
+ * Each Octeon device has this structure to represent all its components.
+ */
+struct octep_vf_device {
+	struct octep_vf_config *conf;
+
+	/* Octeon Chip type. */
+	u16 chip_id;
+	u16 rev_id;
+
+	/* Device capabilities enabled */
+	u64 caps_enabled;
+	/* Device capabilities supported */
+	u64 caps_supported;
+
+	/* Pointer to basic Linux device */
+	struct device *dev;
+	/* Linux PCI device pointer */
+	struct pci_dev *pdev;
+	/* Netdev corresponding to the Octeon device */
+	struct net_device *netdev;
+
+	/* memory mapped io range */
+	struct octep_vf_mmio mmio;
+
+	/* MAC address */
+	u8 mac_addr[ETH_ALEN];
+
+	/* Tx queues (IQ: Instruction Queue) */
+	u16 num_iqs;
+	/* Pointers to Octeon Tx queues */
+	struct octep_vf_iq *iq[OCTEP_VF_MAX_IQ];
+
+	/* Rx queues (OQ: Output Queue) */
+	u16 num_oqs;
+	/* Pointers to Octeon Rx queues */
+	struct octep_vf_oq *oq[OCTEP_VF_MAX_OQ];
+
+	/* Hardware port number of the PCIe interface */
+	u16 pcie_port;
+
+	/* Hardware operations */
+	struct octep_vf_hw_ops hw_ops;
+
+	/* IRQ info */
+	u16 num_irqs;
+	u16 num_non_ioq_irqs;
+	char *non_ioq_irq_names;
+	struct msix_entry *msix_entries;
+	/* IOq information of it's corresponding MSI-X interrupt. */
+	struct octep_vf_ioq_vector *ioq_vector[OCTEP_VF_MAX_QUEUES];
+
+	/* Hardware Interface Tx statistics */
+	struct octep_vf_iface_tx_stats iface_tx_stats;
+	/* Hardware Interface Rx statistics */
+	struct octep_vf_iface_rx_stats iface_rx_stats;
+
+	/* Hardware Interface Link info like supported modes, aneg support */
+	struct octep_vf_iface_link_info link_info;
+
+	/* Mailbox to talk to VFs */
+	struct octep_vf_mbox *mbox;
+
+	/* Work entry to handle Tx timeout */
+	struct work_struct tx_timeout_task;
+
+	/* offset for iface stats */
+	u32 ctrl_mbox_ifstats_offset;
+
+	/* Negotiated Mbox version */
+	u32 mbox_neg_ver;
+
+	/* firmware info */
+	struct octep_vf_fw_info fw_info;
+};
+
+static inline u16 OCTEP_VF_MAJOR_REV(struct octep_vf_device *oct)
+{
+	u16 rev = (oct->rev_id & 0xC) >> 2;
+
+	return (rev == 0) ? 1 : rev;
+}
+
+static inline u16 OCTEP_VF_MINOR_REV(struct octep_vf_device *oct)
+{
+	return (oct->rev_id & 0x3);
+}
+
+/* Octeon CSR read/write access APIs */
+#define octep_vf_write_csr(octep_vf_dev, reg_off, value) \
+	writel(value, (octep_vf_dev)->mmio.hw_addr + (reg_off))
+
+#define octep_vf_write_csr64(octep_vf_dev, reg_off, val64) \
+	writeq(val64, (octep_vf_dev)->mmio.hw_addr + (reg_off))
+
+#define octep_vf_read_csr(octep_vf_dev, reg_off)         \
+	readl((octep_vf_dev)->mmio.hw_addr + (reg_off))
+
+#define octep_vf_read_csr64(octep_vf_dev, reg_off)         \
+	readq((octep_vf_dev)->mmio.hw_addr + (reg_off))
+
+extern struct workqueue_struct *octep_vf_wq;
+
+int octep_vf_device_setup(struct octep_vf_device *oct);
+int octep_vf_setup_iqs(struct octep_vf_device *oct);
+void octep_vf_free_iqs(struct octep_vf_device *oct);
+void octep_vf_clean_iqs(struct octep_vf_device *oct);
+int octep_vf_setup_oqs(struct octep_vf_device *oct);
+void octep_vf_free_oqs(struct octep_vf_device *oct);
+void octep_vf_oq_dbell_init(struct octep_vf_device *oct);
+void octep_vf_device_setup_cn93(struct octep_vf_device *oct);
+void octep_vf_device_setup_cnxk(struct octep_vf_device *oct);
+int octep_vf_iq_process_completions(struct octep_vf_iq *iq, u16 budget);
+int octep_vf_oq_process_rx(struct octep_vf_oq *oq, int budget);
+void octep_vf_set_ethtool_ops(struct net_device *netdev);
+int octep_vf_get_link_info(struct octep_vf_device *oct);
+int octep_vf_get_if_stats(struct octep_vf_device *oct);
+void octep_vf_mbox_work(struct work_struct *work);
+#endif /* _OCTEP_VF_MAIN_H_ */

drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_mbox.h

+/* SPDX-License-Identifier: GPL-2.0 */
+/* Marvell Octeon EP (EndPoint) Ethernet Driver
+ *
+ * Copyright (C) 2020 Marvell.
+ *
+ */
+#ifndef _OCTEP_VF_MBOX_H_
+#define _OCTEP_VF_MBOX_H_
+
+/* When a new command is implemented, VF Mbox version should be bumped.
+ */
+enum octep_pfvf_mbox_version {
+	OCTEP_PFVF_MBOX_VERSION_V0,
+	OCTEP_PFVF_MBOX_VERSION_V1,
+	OCTEP_PFVF_MBOX_VERSION_V2
+};
+
+#define OCTEP_PFVF_MBOX_VERSION_CURRENT OCTEP_PFVF_MBOX_VERSION_V2
+
+enum octep_pfvf_mbox_opcode {
+	OCTEP_PFVF_MBOX_CMD_VERSION,
+	OCTEP_PFVF_MBOX_CMD_SET_MTU,
+	OCTEP_PFVF_MBOX_CMD_SET_MAC_ADDR,
+	OCTEP_PFVF_MBOX_CMD_GET_MAC_ADDR,
+	OCTEP_PFVF_MBOX_CMD_GET_LINK_INFO,
+	OCTEP_PFVF_MBOX_CMD_GET_STATS,
+	OCTEP_PFVF_MBOX_CMD_SET_RX_STATE,
+	OCTEP_PFVF_MBOX_CMD_SET_LINK_STATUS,
+	OCTEP_PFVF_MBOX_CMD_GET_LINK_STATUS,
+	OCTEP_PFVF_MBOX_CMD_GET_MTU,
+	OCTEP_PFVF_MBOX_CMD_DEV_REMOVE,
+	OCTEP_PFVF_MBOX_CMD_GET_FW_INFO,
+	OCTEP_PFVF_MBOX_CMD_SET_OFFLOADS,
+	OCTEP_PFVF_MBOX_NOTIF_LINK_STATUS,
+	OCTEP_PFVF_MBOX_CMD_MAX,
+};
+
+enum octep_pfvf_mbox_word_type {
+	OCTEP_PFVF_MBOX_TYPE_CMD,
+	OCTEP_PFVF_MBOX_TYPE_RSP_ACK,
+	OCTEP_PFVF_MBOX_TYPE_RSP_NACK,
+};
+
+enum octep_pfvf_mbox_cmd_status {
+	OCTEP_PFVF_MBOX_CMD_STATUS_NOT_SETUP = 1,
+	OCTEP_PFVF_MBOX_CMD_STATUS_TIMEDOUT = 2,
+	OCTEP_PFVF_MBOX_CMD_STATUS_NACK = 3,
+	OCTEP_PFVF_MBOX_CMD_STATUS_BUSY = 4,
+	OCTEP_PFVF_MBOX_CMD_STATUS_ERR = 5
+};
+
+enum octep_pfvf_link_status {
+	OCTEP_PFVF_LINK_STATUS_DOWN,
+	OCTEP_PFVF_LINK_STATUS_UP,
+};
+
+enum octep_pfvf_link_speed {
+	OCTEP_PFVF_LINK_SPEED_NONE,
+	OCTEP_PFVF_LINK_SPEED_1000,
+	OCTEP_PFVF_LINK_SPEED_10000,
+	OCTEP_PFVF_LINK_SPEED_25000,
+	OCTEP_PFVF_LINK_SPEED_40000,
+	OCTEP_PFVF_LINK_SPEED_50000,
+	OCTEP_PFVF_LINK_SPEED_100000,
+	OCTEP_PFVF_LINK_SPEED_LAST,
+};
+
+enum octep_pfvf_link_duplex {
+	OCTEP_PFVF_LINK_HALF_DUPLEX,
+	OCTEP_PFVF_LINK_FULL_DUPLEX,
+};
+
+enum octep_pfvf_link_autoneg {
+	OCTEP_PFVF_LINK_AUTONEG,
+	OCTEP_PFVF_LINK_FIXED,
+};
+
+#define OCTEP_PFVF_MBOX_TIMEOUT_WAIT_COUNT  8000
+#define OCTEP_PFVF_MBOX_TIMEOUT_WAIT_UDELAY 1000
+#define OCTEP_PFVF_MBOX_MAX_RETRIES    2
+#define OCTEP_PFVF_MBOX_VERSION        0
+#define OCTEP_PFVF_MBOX_MAX_DATA_SIZE  6
+#define OCTEP_PFVF_MBOX_MAX_DATA_BUF_SIZE 320
+#define OCTEP_PFVF_MBOX_MORE_FRAG_FLAG 1
+
+union octep_pfvf_mbox_word {
+	u64 u64;
+	struct {
+		u64 opcode:8;
+		u64 type:2;
+		u64 rsvd:6;
+		u64 data:48;
+	} s;
+	struct {
+		u64 opcode:8;
+		u64 type:2;
+		u64 frag:1;
+		u64 rsvd:5;
+		u8 data[6];
+	} s_data;
+	struct {
+		u64 opcode:8;
+		u64 type:2;
+		u64 rsvd:6;
+		u64 version:48;
+	} s_version;
+	struct {
+		u64 opcode:8;
+		u64 type:2;
+		u64 rsvd:6;
+		u8 mac_addr[6];
+	} s_set_mac;
+	struct {
+		u64 opcode:8;
+		u64 type:2;
+		u64 rsvd:6;
+		u64 mtu:48;
+	} s_set_mtu;
+	struct {
+		u64 opcode:8;
+		u64 type:2;
+		u64 state:1;
+		u64 rsvd:53;
+	} s_link_state;
+	struct {
+		u64 opcode:8;
+		u64 type:2;
+		u64 status:1;
+		u64 rsvd:53;
+	} s_link_status;
+	struct {
+		u64 opcode:8;
+		u64 type:2;
+		u64 pkind:8;
+		u64 fsz:8;
+		u64 rx_ol_flags:16;
+		u64 tx_ol_flags:16;
+		u64 rsvd:6;
+	} s_fw_info;
+	struct {
+		u64 opcode:8;
+		u64 type:2;
+		u64 rsvd:22;
+		u64 rx_ol_flags:16;
+		u64 tx_ol_flags:16;
+	} s_offloads;
+} __packed;
+
+int octep_vf_setup_mbox(struct octep_vf_device *oct);
+void octep_vf_delete_mbox(struct octep_vf_device *oct);
+int octep_vf_mbox_send_cmd(struct octep_vf_device *oct, union octep_pfvf_mbox_word cmd,
+			   union octep_pfvf_mbox_word *rsp);
+int octep_vf_mbox_bulk_read(struct octep_vf_device *oct, enum octep_pfvf_mbox_opcode opcode,
+			    u8 *data, int *size);
+int octep_vf_mbox_set_mtu(struct octep_vf_device *oct, int mtu);
+int octep_vf_mbox_set_mac_addr(struct octep_vf_device *oct, char *mac_addr);
+int octep_vf_mbox_get_mac_addr(struct octep_vf_device *oct, char *mac_addr);
+int octep_vf_mbox_version_check(struct octep_vf_device *oct);
+int octep_vf_mbox_set_rx_state(struct octep_vf_device *oct, bool state);
+int octep_vf_mbox_set_link_status(struct octep_vf_device *oct, bool status);
+int octep_vf_mbox_get_link_status(struct octep_vf_device *oct, u8 *oper_up);
+int octep_vf_mbox_dev_remove(struct octep_vf_device *oct);
+int octep_vf_mbox_get_fw_info(struct octep_vf_device *oct);
+int octep_vf_mbox_set_offloads(struct octep_vf_device *oct, u16 tx_offloads, u16 rx_offloads);
+
+#endif

drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_regs_cn9k.h

+/* SPDX-License-Identifier: GPL-2.0 */
+/* Marvell Octeon EP (EndPoint) VF Ethernet Driver
+ *
+ * Copyright (C) 2020 Marvell.
+ *
+ */
+#ifndef _OCTEP_VF_REGS_CN9K_H_
+#define _OCTEP_VF_REGS_CN9K_H_
+
+/*############################ RST #########################*/
+#define     CN93_VF_CONFIG_XPANSION_BAR         0x38
+#define     CN93_VF_CONFIG_PCIE_CAP             0x70
+#define     CN93_VF_CONFIG_PCIE_DEVCAP          0x74
+#define     CN93_VF_CONFIG_PCIE_DEVCTL          0x78
+#define     CN93_VF_CONFIG_PCIE_LINKCAP         0x7C
+#define     CN93_VF_CONFIG_PCIE_LINKCTL         0x80
+#define     CN93_VF_CONFIG_PCIE_SLOTCAP         0x84
+#define     CN93_VF_CONFIG_PCIE_SLOTCTL         0x88
+
+#define     CN93_VF_RING_OFFSET                    BIT_ULL(17)
+
+/*###################### RING IN REGISTERS #########################*/
+#define    CN93_VF_SDP_R_IN_CONTROL_START          0x10000
+#define    CN93_VF_SDP_R_IN_ENABLE_START           0x10010
+#define    CN93_VF_SDP_R_IN_INSTR_BADDR_START      0x10020
+#define    CN93_VF_SDP_R_IN_INSTR_RSIZE_START      0x10030
+#define    CN93_VF_SDP_R_IN_INSTR_DBELL_START      0x10040
+#define    CN93_VF_SDP_R_IN_CNTS_START             0x10050
+#define    CN93_VF_SDP_R_IN_INT_LEVELS_START       0x10060
+#define    CN93_VF_SDP_R_IN_PKT_CNT_START          0x10080
+#define    CN93_VF_SDP_R_IN_BYTE_CNT_START         0x10090
+
+#define    CN93_VF_SDP_R_IN_CONTROL(ring)          \
+	(CN93_VF_SDP_R_IN_CONTROL_START + ((ring) * CN93_VF_RING_OFFSET))
+
+#define    CN93_VF_SDP_R_IN_ENABLE(ring)          \
+	(CN93_VF_SDP_R_IN_ENABLE_START + ((ring) * CN93_VF_RING_OFFSET))
+
+#define    CN93_VF_SDP_R_IN_INSTR_BADDR(ring)          \
+	(CN93_VF_SDP_R_IN_INSTR_BADDR_START + ((ring) * CN93_VF_RING_OFFSET))
+
+#define    CN93_VF_SDP_R_IN_INSTR_RSIZE(ring)          \
+	(CN93_VF_SDP_R_IN_INSTR_RSIZE_START + ((ring) * CN93_VF_RING_OFFSET))
+
+#define    CN93_VF_SDP_R_IN_INSTR_DBELL(ring)          \
+	(CN93_VF_SDP_R_IN_INSTR_DBELL_START + ((ring) * CN93_VF_RING_OFFSET))
+
+#define    CN93_VF_SDP_R_IN_CNTS(ring)          \
+	(CN93_VF_SDP_R_IN_CNTS_START + ((ring) * CN93_VF_RING_OFFSET))
+
+#define    CN93_VF_SDP_R_IN_INT_LEVELS(ring)          \
+	(CN93_VF_SDP_R_IN_INT_LEVELS_START + ((ring) * CN93_VF_RING_OFFSET))
+
+#define    CN93_VF_SDP_R_IN_PKT_CNT(ring)          \
+	(CN93_VF_SDP_R_IN_PKT_CNT_START + ((ring) * CN93_VF_RING_OFFSET))
+
+#define    CN93_VF_SDP_R_IN_BYTE_CNT(ring)          \
+	(CN93_VF_SDP_R_IN_BYTE_CNT_START + ((ring) * CN93_VF_RING_OFFSET))
+
+/*------------------ R_IN Masks ----------------*/
+
+/** Rings per Virtual Function **/
+#define    CN93_VF_R_IN_CTL_RPVF_MASK    (0xF)
+#define	   CN93_VF_R_IN_CTL_RPVF_POS     (48)
+
+/* Number of instructions to be read in one MAC read request.
+ * setting to Max value(4)
+ **/
+#define    CN93_VF_R_IN_CTL_IDLE                  BIT_ULL(28)
+#define    CN93_VF_R_IN_CTL_RDSIZE                (0x3ULL << 25)
+#define    CN93_VF_R_IN_CTL_IS_64B                BIT_ULL(24)
+#define    CN93_VF_R_IN_CTL_D_NSR                 BIT_ULL(8)
+#define    CN93_VF_R_IN_CTL_D_ESR                 BIT_ULL(6)
+#define    CN93_VF_R_IN_CTL_D_ROR                 BIT_ULL(5)
+#define    CN93_VF_R_IN_CTL_NSR                   BIT_ULL(3)
+#define    CN93_VF_R_IN_CTL_ESR                   BIT_ULL(1)
+#define    CN93_VF_R_IN_CTL_ROR                   BIT_ULL(0)
+
+#define    CN93_VF_R_IN_CTL_MASK     (CN93_VF_R_IN_CTL_RDSIZE | CN93_VF_R_IN_CTL_IS_64B)
+
+/*###################### RING OUT REGISTERS #########################*/
+#define    CN93_VF_SDP_R_OUT_CNTS_START            0x10100
+#define    CN93_VF_SDP_R_OUT_INT_LEVELS_START      0x10110
+#define    CN93_VF_SDP_R_OUT_SLIST_BADDR_START     0x10120
+#define    CN93_VF_SDP_R_OUT_SLIST_RSIZE_START     0x10130
+#define    CN93_VF_SDP_R_OUT_SLIST_DBELL_START     0x10140
+#define    CN93_VF_SDP_R_OUT_CONTROL_START         0x10150
+#define    CN93_VF_SDP_R_OUT_ENABLE_START          0x10160
+#define    CN93_VF_SDP_R_OUT_PKT_CNT_START         0x10180
+#define    CN93_VF_SDP_R_OUT_BYTE_CNT_START        0x10190
+
+#define    CN93_VF_SDP_R_OUT_CONTROL(ring)          \
+	(CN93_VF_SDP_R_OUT_CONTROL_START + ((ring) * CN93_VF_RING_OFFSET))
+
+#define    CN93_VF_SDP_R_OUT_ENABLE(ring)          \
+	(CN93_VF_SDP_R_OUT_ENABLE_START + ((ring) * CN93_VF_RING_OFFSET))
+
+#define    CN93_VF_SDP_R_OUT_SLIST_BADDR(ring)          \
+	(CN93_VF_SDP_R_OUT_SLIST_BADDR_START + ((ring) * CN93_VF_RING_OFFSET))
+
+#define    CN93_VF_SDP_R_OUT_SLIST_RSIZE(ring)          \
+	(CN93_VF_SDP_R_OUT_SLIST_RSIZE_START + ((ring) * CN93_VF_RING_OFFSET))
+
+#define    CN93_VF_SDP_R_OUT_SLIST_DBELL(ring)          \
+	(CN93_VF_SDP_R_OUT_SLIST_DBELL_START + ((ring) * CN93_VF_RING_OFFSET))
+
+#define    CN93_VF_SDP_R_OUT_CNTS(ring)          \
+	(CN93_VF_SDP_R_OUT_CNTS_START + ((ring) * CN93_VF_RING_OFFSET))
+
+#define    CN93_VF_SDP_R_OUT_INT_LEVELS(ring)          \
+	(CN93_VF_SDP_R_OUT_INT_LEVELS_START + ((ring) * CN93_VF_RING_OFFSET))
+
+#define    CN93_VF_SDP_R_OUT_PKT_CNT(ring)          \
+	(CN93_VF_SDP_R_OUT_PKT_CNT_START + ((ring) * CN93_VF_RING_OFFSET))
+
+#define    CN93_VF_SDP_R_OUT_BYTE_CNT(ring)          \
+	(CN93_VF_SDP_R_OUT_BYTE_CNT_START + ((ring) * CN93_VF_RING_OFFSET))
+
+/*------------------ R_OUT Masks ----------------*/
+#define    CN93_VF_R_OUT_INT_LEVELS_BMODE            BIT_ULL(63)
+#define    CN93_VF_R_OUT_INT_LEVELS_TIMET            (32)
+
+#define    CN93_VF_R_OUT_CTL_IDLE                    BIT_ULL(40)
+#define    CN93_VF_R_OUT_CTL_ES_I                    BIT_ULL(34)
+#define    CN93_VF_R_OUT_CTL_NSR_I                   BIT_ULL(33)
+#define    CN93_VF_R_OUT_CTL_ROR_I                   BIT_ULL(32)
+#define    CN93_VF_R_OUT_CTL_ES_D                    BIT_ULL(30)
+#define    CN93_VF_R_OUT_CTL_NSR_D                   BIT_ULL(29)
+#define    CN93_VF_R_OUT_CTL_ROR_D                   BIT_ULL(28)
+#define    CN93_VF_R_OUT_CTL_ES_P                    BIT_ULL(26)
+#define    CN93_VF_R_OUT_CTL_NSR_P                   BIT_ULL(25)
+#define    CN93_VF_R_OUT_CTL_ROR_P                   BIT_ULL(24)
+#define    CN93_VF_R_OUT_CTL_IMODE                   BIT_ULL(23)
+
+/* ##################### Mail Box Registers ########################## */
+/* SDP PF to VF Mailbox Data Register */
+#define    CN93_VF_SDP_R_MBOX_PF_VF_DATA_START    0x10210
+/* SDP Packet PF to VF Mailbox Interrupt Register */
+#define    CN93_VF_SDP_R_MBOX_PF_VF_INT_START     0x10220
+/* SDP VF to PF Mailbox Data Register */
+#define    CN93_VF_SDP_R_MBOX_VF_PF_DATA_START    0x10230
+
+#define    CN93_VF_SDP_R_MBOX_PF_VF_INT_ENAB         BIT_ULL(1)
+#define    CN93_VF_SDP_R_MBOX_PF_VF_INT_STATUS       BIT_ULL(0)
+
+#define    CN93_VF_SDP_R_MBOX_PF_VF_DATA(ring)          \
+	(CN93_VF_SDP_R_MBOX_PF_VF_DATA_START + ((ring) * CN93_VF_RING_OFFSET))
+
+#define    CN93_VF_SDP_R_MBOX_PF_VF_INT(ring)          \
+	(CN93_VF_SDP_R_MBOX_PF_VF_INT_START + ((ring) * CN93_VF_RING_OFFSET))
+
+#define    CN93_VF_SDP_R_MBOX_VF_PF_DATA(ring)          \
+	(CN93_VF_SDP_R_MBOX_VF_PF_DATA_START + ((ring) * CN93_VF_RING_OFFSET))
+#endif /* _OCTEP_VF_REGS_CN9K_H_ */

drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_regs_cnxk.h

+/* SPDX-License-Identifier: GPL-2.0 */
+/* Marvell Octeon EP (EndPoint) VF Ethernet Driver
+ *
+ * Copyright (C) 2020 Marvell.
+ *
+ */
+#ifndef _OCTEP_VF_REGS_CNXK_H_
+#define _OCTEP_VF_REGS_CNXK_H_
+
+/*############################ RST #########################*/
+#define     CNXK_VF_CONFIG_XPANSION_BAR         0x38
+#define     CNXK_VF_CONFIG_PCIE_CAP             0x70
+#define     CNXK_VF_CONFIG_PCIE_DEVCAP          0x74
+#define     CNXK_VF_CONFIG_PCIE_DEVCTL          0x78
+#define     CNXK_VF_CONFIG_PCIE_LINKCAP         0x7C
+#define     CNXK_VF_CONFIG_PCIE_LINKCTL         0x80
+#define     CNXK_VF_CONFIG_PCIE_SLOTCAP         0x84
+#define     CNXK_VF_CONFIG_PCIE_SLOTCTL         0x88
+
+#define     CNXK_VF_RING_OFFSET                    (0x1ULL << 17)
+
+/*###################### RING IN REGISTERS #########################*/
+#define    CNXK_VF_SDP_R_IN_CONTROL_START          0x10000
+#define    CNXK_VF_SDP_R_IN_ENABLE_START           0x10010
+#define    CNXK_VF_SDP_R_IN_INSTR_BADDR_START      0x10020
+#define    CNXK_VF_SDP_R_IN_INSTR_RSIZE_START      0x10030
+#define    CNXK_VF_SDP_R_IN_INSTR_DBELL_START      0x10040
+#define    CNXK_VF_SDP_R_IN_CNTS_START             0x10050
+#define    CNXK_VF_SDP_R_IN_INT_LEVELS_START       0x10060
+#define    CNXK_VF_SDP_R_IN_PKT_CNT_START          0x10080
+#define    CNXK_VF_SDP_R_IN_BYTE_CNT_START         0x10090
+#define    CNXK_VF_SDP_R_ERR_TYPE_START            0x10400
+
+#define CNXK_VF_SDP_R_ERR_TYPE(ring)                 \
+	(CNXK_VF_SDP_R_ERR_TYPE_START + ((ring) * CNXK_VF_RING_OFFSET))
+
+#define    CNXK_VF_SDP_R_IN_CONTROL(ring)          \
+	(CNXK_VF_SDP_R_IN_CONTROL_START + ((ring) * CNXK_VF_RING_OFFSET))
+
+#define    CNXK_VF_SDP_R_IN_ENABLE(ring)          \
+	(CNXK_VF_SDP_R_IN_ENABLE_START + ((ring) * CNXK_VF_RING_OFFSET))
+
+#define    CNXK_VF_SDP_R_IN_INSTR_BADDR(ring)          \
+	(CNXK_VF_SDP_R_IN_INSTR_BADDR_START + ((ring) * CNXK_VF_RING_OFFSET))
+
+#define    CNXK_VF_SDP_R_IN_INSTR_RSIZE(ring)          \
+	(CNXK_VF_SDP_R_IN_INSTR_RSIZE_START + ((ring) * CNXK_VF_RING_OFFSET))
+
+#define    CNXK_VF_SDP_R_IN_INSTR_DBELL(ring)          \
+	(CNXK_VF_SDP_R_IN_INSTR_DBELL_START + ((ring) * CNXK_VF_RING_OFFSET))
+
+#define    CNXK_VF_SDP_R_IN_CNTS(ring)          \
+	(CNXK_VF_SDP_R_IN_CNTS_START + ((ring) * CNXK_VF_RING_OFFSET))
+
+#define    CNXK_VF_SDP_R_IN_INT_LEVELS(ring)          \
+	(CNXK_VF_SDP_R_IN_INT_LEVELS_START + ((ring) * CNXK_VF_RING_OFFSET))
+
+#define    CNXK_VF_SDP_R_IN_PKT_CNT(ring)          \
+	(CNXK_VF_SDP_R_IN_PKT_CNT_START + ((ring) * CNXK_VF_RING_OFFSET))
+
+#define    CNXK_VF_SDP_R_IN_BYTE_CNT(ring)          \
+	(CNXK_VF_SDP_R_IN_BYTE_CNT_START + ((ring) * CNXK_VF_RING_OFFSET))
+
+/*------------------ R_IN Masks ----------------*/
+
+/** Rings per Virtual Function **/
+#define    CNXK_VF_R_IN_CTL_RPVF_MASK    (0xF)
+#define	   CNXK_VF_R_IN_CTL_RPVF_POS     (48)
+
+/* Number of instructions to be read in one MAC read request.
+ * setting to Max value(4)
+ **/
+#define    CNXK_VF_R_IN_CTL_IDLE                  (0x1ULL << 28)
+#define    CNXK_VF_R_IN_CTL_RDSIZE                (0x3ULL << 25)
+#define    CNXK_VF_R_IN_CTL_IS_64B                (0x1ULL << 24)
+#define    CNXK_VF_R_IN_CTL_D_NSR                 (0x1ULL << 8)
+#define    CNXK_VF_R_IN_CTL_D_ESR                 (0x1ULL << 6)
+#define    CNXK_VF_R_IN_CTL_D_ROR                 (0x1ULL << 5)
+#define    CNXK_VF_R_IN_CTL_NSR                   (0x1ULL << 3)
+#define    CNXK_VF_R_IN_CTL_ESR                   (0x1ULL << 1)
+#define    CNXK_VF_R_IN_CTL_ROR                   (0x1ULL << 0)
+
+#define    CNXK_VF_R_IN_CTL_MASK     (CNXK_VF_R_IN_CTL_RDSIZE | CNXK_VF_R_IN_CTL_IS_64B)
+
+/*###################### RING OUT REGISTERS #########################*/
+#define    CNXK_VF_SDP_R_OUT_CNTS_START            0x10100
+#define    CNXK_VF_SDP_R_OUT_INT_LEVELS_START      0x10110
+#define    CNXK_VF_SDP_R_OUT_SLIST_BADDR_START     0x10120
+#define    CNXK_VF_SDP_R_OUT_SLIST_RSIZE_START     0x10130
+#define    CNXK_VF_SDP_R_OUT_SLIST_DBELL_START     0x10140
+#define    CNXK_VF_SDP_R_OUT_CONTROL_START         0x10150
+#define    CNXK_VF_SDP_R_OUT_WMARK_START           0x10160
+#define    CNXK_VF_SDP_R_OUT_ENABLE_START          0x10170
+#define    CNXK_VF_SDP_R_OUT_PKT_CNT_START         0x10180
+#define    CNXK_VF_SDP_R_OUT_BYTE_CNT_START        0x10190
+
+#define    CNXK_VF_SDP_R_OUT_CONTROL(ring)          \
+	(CNXK_VF_SDP_R_OUT_CONTROL_START + ((ring) * CNXK_VF_RING_OFFSET))
+
+#define    CNXK_VF_SDP_R_OUT_ENABLE(ring)          \
+	(CNXK_VF_SDP_R_OUT_ENABLE_START + ((ring) * CNXK_VF_RING_OFFSET))
+
+#define    CNXK_VF_SDP_R_OUT_SLIST_BADDR(ring)          \
+	(CNXK_VF_SDP_R_OUT_SLIST_BADDR_START + ((ring) * CNXK_VF_RING_OFFSET))
+
+#define    CNXK_VF_SDP_R_OUT_SLIST_RSIZE(ring)          \
+	(CNXK_VF_SDP_R_OUT_SLIST_RSIZE_START + ((ring) * CNXK_VF_RING_OFFSET))
+
+#define    CNXK_VF_SDP_R_OUT_SLIST_DBELL(ring)          \
+	(CNXK_VF_SDP_R_OUT_SLIST_DBELL_START + ((ring) * CNXK_VF_RING_OFFSET))
+
+#define    CNXK_VF_SDP_R_OUT_WMARK(ring)          \
+	(CNXK_VF_SDP_R_OUT_WMARK_START + ((ring) * CNXK_VF_RING_OFFSET))
+
+#define    CNXK_VF_SDP_R_OUT_CNTS(ring)          \
+	(CNXK_VF_SDP_R_OUT_CNTS_START + ((ring) * CNXK_VF_RING_OFFSET))
+
+#define    CNXK_VF_SDP_R_OUT_INT_LEVELS(ring)          \
+	(CNXK_VF_SDP_R_OUT_INT_LEVELS_START + ((ring) * CNXK_VF_RING_OFFSET))
+
+#define    CNXK_VF_SDP_R_OUT_PKT_CNT(ring)          \
+	(CNXK_VF_SDP_R_OUT_PKT_CNT_START + ((ring) * CNXK_VF_RING_OFFSET))
+
+#define    CNXK_VF_SDP_R_OUT_BYTE_CNT(ring)          \
+	(CNXK_VF_SDP_R_OUT_BYTE_CNT_START + ((ring) * CNXK_VF_RING_OFFSET))
+
+/*------------------ R_OUT Masks ----------------*/
+#define    CNXK_VF_R_OUT_INT_LEVELS_BMODE            BIT_ULL(63)
+#define    CNXK_VF_R_OUT_INT_LEVELS_TIMET            (32)
+
+#define    CNXK_VF_R_OUT_CTL_IDLE                    BIT_ULL(40)
+#define    CNXK_VF_R_OUT_CTL_ES_I                    BIT_ULL(34)
+#define    CNXK_VF_R_OUT_CTL_NSR_I                   BIT_ULL(33)
+#define    CNXK_VF_R_OUT_CTL_ROR_I                   BIT_ULL(32)
+#define    CNXK_VF_R_OUT_CTL_ES_D                    BIT_ULL(30)
+#define    CNXK_VF_R_OUT_CTL_NSR_D                   BIT_ULL(29)
+#define    CNXK_VF_R_OUT_CTL_ROR_D                   BIT_ULL(28)
+#define    CNXK_VF_R_OUT_CTL_ES_P                    BIT_ULL(26)
+#define    CNXK_VF_R_OUT_CTL_NSR_P                   BIT_ULL(25)
+#define    CNXK_VF_R_OUT_CTL_ROR_P                   BIT_ULL(24)
+#define    CNXK_VF_R_OUT_CTL_IMODE                   BIT_ULL(23)
+
+/* ##################### Mail Box Registers ########################## */
+/* SDP PF to VF Mailbox Data Register */
+#define    CNXK_VF_SDP_R_MBOX_PF_VF_DATA_START    0x10210
+/* SDP Packet PF to VF Mailbox Interrupt Register */
+#define    CNXK_VF_SDP_R_MBOX_PF_VF_INT_START     0x10220
+/* SDP VF to PF Mailbox Data Register */
+#define    CNXK_VF_SDP_R_MBOX_VF_PF_DATA_START    0x10230
+
+#define    CNXK_VF_SDP_R_MBOX_PF_VF_INT_ENAB         BIT_ULL(1)
+#define    CNXK_VF_SDP_R_MBOX_PF_VF_INT_STATUS       BIT_ULL(0)
+
+#define    CNXK_VF_SDP_R_MBOX_PF_VF_DATA(ring)          \
+	(CNXK_VF_SDP_R_MBOX_PF_VF_DATA_START + ((ring) * CNXK_VF_RING_OFFSET))
+
+#define    CNXK_VF_SDP_R_MBOX_PF_VF_INT(ring)          \
+	(CNXK_VF_SDP_R_MBOX_PF_VF_INT_START + ((ring) * CNXK_VF_RING_OFFSET))
+
+#define    CNXK_VF_SDP_R_MBOX_VF_PF_DATA(ring)          \
+	(CNXK_VF_SDP_R_MBOX_VF_PF_DATA_START + ((ring) * CNXK_VF_RING_OFFSET))
+#endif /* _OCTEP_VF_REGS_CNXK_H_ */

drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_rx.h

+/* SPDX-License-Identifier: GPL-2.0 */
+/* Marvell Octeon EP (EndPoint) VF Ethernet Driver
+ *
+ * Copyright (C) 2020 Marvell.
+ *
+ */
+
+#ifndef _OCTEP_VF_RX_H_
+#define _OCTEP_VF_RX_H_
+
+/* struct octep_vf_oq_desc_hw - Octeon Hardware OQ descriptor format.
+ *
+ * The descriptor ring is made of descriptors which have 2 64-bit values:
+ *
+ *   @buffer_ptr: DMA address of the skb->data
+ *   @info_ptr:  DMA address of host memory, used to update pkt count by hw.
+ *               This is currently unused to save pci writes.
+ */
+struct octep_vf_oq_desc_hw {
+	dma_addr_t buffer_ptr;
+	u64 info_ptr;
+};
+
+static_assert(sizeof(struct octep_vf_oq_desc_hw) == 16);
+
+#define OCTEP_VF_OQ_DESC_SIZE    (sizeof(struct octep_vf_oq_desc_hw))
+
+/* Rx offload flags */
+#define OCTEP_VF_RX_OFFLOAD_VLAN_STRIP		BIT(0)
+#define OCTEP_VF_RX_OFFLOAD_IPV4_CKSUM		BIT(1)
+#define OCTEP_VF_RX_OFFLOAD_UDP_CKSUM		BIT(2)
+#define OCTEP_VF_RX_OFFLOAD_TCP_CKSUM		BIT(3)
+
+#define OCTEP_VF_RX_OFFLOAD_CKSUM		(OCTEP_VF_RX_OFFLOAD_IPV4_CKSUM | \
+						 OCTEP_VF_RX_OFFLOAD_UDP_CKSUM | \
+						 OCTEP_VF_RX_OFFLOAD_TCP_CKSUM)
+
+#define OCTEP_VF_RX_IP_CSUM(flags)		((flags) & \
+						 (OCTEP_VF_RX_OFFLOAD_IPV4_CKSUM | \
+						  OCTEP_VF_RX_OFFLOAD_TCP_CKSUM | \
+						  OCTEP_VF_RX_OFFLOAD_UDP_CKSUM))
+
+/* bit 0 is vlan strip */
+#define OCTEP_VF_RX_CSUM_IP_VERIFIED		BIT(1)
+#define OCTEP_VF_RX_CSUM_L4_VERIFIED		BIT(2)
+
+#define OCTEP_VF_RX_CSUM_VERIFIED(flags)	((flags) & \
+						 (OCTEP_VF_RX_CSUM_L4_VERIFIED | \
+						  OCTEP_VF_RX_CSUM_IP_VERIFIED))
+
+/* Extended Response Header in packet data received from Hardware.
+ * Includes metadata like checksum status.
+ * this is valid only if hardware/firmware published support for this.
+ * This is at offset 0 of packet data (skb->data).
+ */
+struct octep_vf_oq_resp_hw_ext {
+	/* Reserved. */
+	u64 rsvd:48;
+
+	/* rx offload flags */
+	u16 rx_ol_flags;
+};
+
+static_assert(sizeof(struct octep_vf_oq_resp_hw_ext) == 8);
+
+#define  OCTEP_VF_OQ_RESP_HW_EXT_SIZE   (sizeof(struct octep_vf_oq_resp_hw_ext))
+
+/* Length of Rx packet DMA'ed by Octeon to Host.
+ * this is in bigendian; so need to be converted to cpu endian.
+ * Octeon writes this at the beginning of Rx buffer (skb->data).
+ */
+struct octep_vf_oq_resp_hw {
+	/* The Length of the packet. */
+	__be64 length;
+};
+
+static_assert(sizeof(struct octep_vf_oq_resp_hw) == 8);
+
+#define OCTEP_VF_OQ_RESP_HW_SIZE   (sizeof(struct octep_vf_oq_resp_hw))
+
+/* Pointer to data buffer.
+ * Driver keeps a pointer to the data buffer that it made available to
+ * the Octeon device. Since the descriptor ring keeps physical (bus)
+ * addresses, this field is required for the driver to keep track of
+ * the virtual address pointers. The fields are operated by
+ * OS-dependent routines.
+ */
+struct octep_vf_rx_buffer {
+	struct page *page;
+
+	/* length from rx hardware descriptor after converting to cpu endian */
+	u64 len;
+};
+
+#define OCTEP_VF_OQ_RECVBUF_SIZE    (sizeof(struct octep_vf_rx_buffer))
+
+/* Output Queue statistics. Each output queue has four stats fields. */
+struct octep_vf_oq_stats {
+	/* Number of packets received from the Device. */
+	u64 packets;
+
+	/* Number of bytes received from the Device. */
+	u64 bytes;
+
+	/* Number of times failed to allocate buffers. */
+	u64 alloc_failures;
+};
+
+#define OCTEP_VF_OQ_STATS_SIZE   (sizeof(struct octep_vf_oq_stats))
+
+/* Hardware interface Rx statistics */
+struct octep_vf_iface_rx_stats {
+	/* Received packets */
+	u64 pkts;
+
+	/* Octets of received packets */
+	u64 octets;
+
+	/* Received PAUSE and Control packets */
+	u64 pause_pkts;
+
+	/* Received PAUSE and Control octets */
+	u64 pause_octets;
+
+	/* Filtered DMAC0 packets */
+	u64 dmac0_pkts;
+
+	/* Filtered DMAC0 octets */
+	u64 dmac0_octets;
+
+	/* Packets dropped due to RX FIFO full */
+	u64 dropped_pkts_fifo_full;
+
+	/* Octets dropped due to RX FIFO full */
+	u64 dropped_octets_fifo_full;
+
+	/* Error packets */
+	u64 err_pkts;
+
+	/* Filtered DMAC1 packets */
+	u64 dmac1_pkts;
+
+	/* Filtered DMAC1 octets */
+	u64 dmac1_octets;
+
+	/* NCSI-bound packets dropped */
+	u64 ncsi_dropped_pkts;
+
+	/* NCSI-bound octets dropped */
+	u64 ncsi_dropped_octets;
+
+	/* Multicast packets received. */
+	u64 mcast_pkts;
+
+	/* Broadcast packets received. */
+	u64 bcast_pkts;
+
+};
+
+/* The Descriptor Ring Output Queue structure.
+ * This structure has all the information required to implement a
+ * Octeon OQ.
+ */
+struct octep_vf_oq {
+	u32 q_no;
+
+	struct octep_vf_device *octep_vf_dev;
+	struct net_device *netdev;
+	struct device *dev;
+
+	struct napi_struct *napi;
+
+	/* The receive buffer list. This list has the virtual addresses
+	 * of the buffers.
+	 */
+	struct octep_vf_rx_buffer *buff_info;
+
+	/* Pointer to the mapped packet credit register.
+	 * Host writes number of info/buffer ptrs available to this register
+	 */
+	u8 __iomem *pkts_credit_reg;
+
+	/* Pointer to the mapped packet sent register.
+	 * Octeon writes the number of packets DMA'ed to host memory
+	 * in this register.
+	 */
+	u8 __iomem *pkts_sent_reg;
+
+	/* Statistics for this OQ. */
+	struct octep_vf_oq_stats stats;
+
+	/* Packets pending to be processed */
+	u32 pkts_pending;
+	u32 last_pkt_count;
+
+	/* Index in the ring where the driver should read the next packet */
+	u32 host_read_idx;
+
+	/* Number of  descriptors in this ring. */
+	u32 max_count;
+	u32 ring_size_mask;
+
+	/* The number of descriptors pending refill. */
+	u32 refill_count;
+
+	/* Index in the ring where the driver will refill the
+	 * descriptor's buffer
+	 */
+	u32 host_refill_idx;
+	u32 refill_threshold;
+
+	/* The size of each buffer pointed by the buffer pointer. */
+	u32 buffer_size;
+	u32 max_single_buffer_size;
+
+	/* The 8B aligned descriptor ring starts at this address. */
+	struct octep_vf_oq_desc_hw *desc_ring;
+
+	/* DMA mapped address of the OQ descriptor ring. */
+	dma_addr_t desc_ring_dma;
+};
+
+#define OCTEP_VF_OQ_SIZE   (sizeof(struct octep_vf_oq))
+#endif	/* _OCTEP_VF_RX_H_ */