1 files changed, 312 insertions, 0 deletions

diff --git a/drivers/net/ethernet/cisco/enic/enic.h b/drivers/net/ethernet/cisco/enic/enic.h
new file mode 100644
index 000000000..a0964b629
--- /dev/null
+++ b/drivers/net/ethernet/cisco/enic/enic.h
@@ -0,0 +1,312 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright 2008-2010 Cisco Systems, Inc.  All rights reserved.
+ * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
+ */
+
+#ifndef _ENIC_H_
+#define _ENIC_H_
+
+#include "vnic_enet.h"
+#include "vnic_dev.h"
+#include "vnic_wq.h"
+#include "vnic_rq.h"
+#include "vnic_cq.h"
+#include "vnic_intr.h"
+#include "vnic_stats.h"
+#include "vnic_nic.h"
+#include "vnic_rss.h"
+#include <linux/irq.h>
+
+#define DRV_NAME		"enic"
+#define DRV_DESCRIPTION		"Cisco VIC Ethernet NIC Driver"
+
+#define ENIC_BARS_MAX		6
+
+#define ENIC_WQ_MAX		8
+#define ENIC_RQ_MAX		8
+#define ENIC_CQ_MAX		(ENIC_WQ_MAX + ENIC_RQ_MAX)
+#define ENIC_INTR_MAX		(ENIC_CQ_MAX + 2)
+
+#define ENIC_WQ_NAPI_BUDGET	256
+
+#define ENIC_AIC_LARGE_PKT_DIFF	3
+
+struct enic_msix_entry {
+	int requested;
+	char devname[IFNAMSIZ + 8];
+	irqreturn_t (*isr)(int, void *);
+	void *devid;
+	cpumask_var_t affinity_mask;
+};
+
+/* Store only the lower range.  Higher range is given by fw. */
+struct enic_intr_mod_range {
+	u32 small_pkt_range_start;
+	u32 large_pkt_range_start;
+};
+
+struct enic_intr_mod_table {
+	u32 rx_rate;
+	u32 range_percent;
+};
+
+#define ENIC_MAX_LINK_SPEEDS		3
+#define ENIC_LINK_SPEED_10G		10000
+#define ENIC_LINK_SPEED_4G		4000
+#define ENIC_LINK_40G_INDEX		2
+#define ENIC_LINK_10G_INDEX		1
+#define ENIC_LINK_4G_INDEX		0
+#define ENIC_RX_COALESCE_RANGE_END	125
+#define ENIC_AIC_TS_BREAK		100
+
+struct enic_rx_coal {
+	u32 small_pkt_range_start;
+	u32 large_pkt_range_start;
+	u32 range_end;
+	u32 use_adaptive_rx_coalesce;
+};
+
+/* priv_flags */
+#define ENIC_SRIOV_ENABLED		(1 << 0)
+
+/* enic port profile set flags */
+#define ENIC_PORT_REQUEST_APPLIED	(1 << 0)
+#define ENIC_SET_REQUEST		(1 << 1)
+#define ENIC_SET_NAME			(1 << 2)
+#define ENIC_SET_INSTANCE		(1 << 3)
+#define ENIC_SET_HOST			(1 << 4)
+
+struct enic_port_profile {
+	u32 set;
+	u8 request;
+	char name[PORT_PROFILE_MAX];
+	u8 instance_uuid[PORT_UUID_MAX];
+	u8 host_uuid[PORT_UUID_MAX];
+	u8 vf_mac[ETH_ALEN];
+	u8 mac_addr[ETH_ALEN];
+};
+
+/* enic_rfs_fltr_node - rfs filter node in hash table
+ *	@@keys: IPv4 5 tuple
+ *	@flow_id: flow_id of clsf filter provided by kernel
+ *	@fltr_id: filter id of clsf filter returned by adaptor
+ *	@rq_id: desired rq index
+ *	@node: hlist_node
+ */
+struct enic_rfs_fltr_node {
+	struct flow_keys keys;
+	u32 flow_id;
+	u16 fltr_id;
+	u16 rq_id;
+	struct hlist_node node;
+};
+
+/* enic_rfs_flw_tbl - rfs flow table
+ *	@max: Maximum number of filters vNIC supports
+ *	@free: Number of free filters available
+ *	@toclean: hash table index to clean next
+ *	@ht_head: hash table list head
+ *	@lock: spin lock
+ *	@rfs_may_expire: timer function for enic_rps_may_expire_flow
+ */
+struct enic_rfs_flw_tbl {
+	u16 max;
+	int free;
+
+#define ENIC_RFS_FLW_BITSHIFT	(10)
+#define ENIC_RFS_FLW_MASK	((1 << ENIC_RFS_FLW_BITSHIFT) - 1)
+	u16 toclean:ENIC_RFS_FLW_BITSHIFT;
+	struct hlist_head ht_head[1 << ENIC_RFS_FLW_BITSHIFT];
+	spinlock_t lock;
+	struct timer_list rfs_may_expire;
+};
+
+struct vxlan_offload {
+	u16 vxlan_udp_port_number;
+	u8 patch_level;
+	u8 flags;
+};
+
+/* Per-instance private data structure */
+struct enic {
+	struct net_device *netdev;
+	struct pci_dev *pdev;
+	struct vnic_enet_config config;
+	struct vnic_dev_bar bar[ENIC_BARS_MAX];
+	struct vnic_dev *vdev;
+	struct timer_list notify_timer;
+	struct work_struct reset;
+	struct work_struct tx_hang_reset;
+	struct work_struct change_mtu_work;
+	struct msix_entry msix_entry[ENIC_INTR_MAX];
+	struct enic_msix_entry msix[ENIC_INTR_MAX];
+	u32 msg_enable;
+	spinlock_t devcmd_lock;
+	u8 mac_addr[ETH_ALEN];
+	unsigned int flags;
+	unsigned int priv_flags;
+	unsigned int mc_count;
+	unsigned int uc_count;
+	u32 port_mtu;
+	struct enic_rx_coal rx_coalesce_setting;
+	u32 rx_coalesce_usecs;
+	u32 tx_coalesce_usecs;
+#ifdef CONFIG_PCI_IOV
+	u16 num_vfs;
+#endif
+	spinlock_t enic_api_lock;
+	bool enic_api_busy;
+	struct enic_port_profile *pp;
+
+	/* work queue cache line section */
+	____cacheline_aligned struct vnic_wq wq[ENIC_WQ_MAX];
+	spinlock_t wq_lock[ENIC_WQ_MAX];
+	unsigned int wq_count;
+	u16 loop_enable;
+	u16 loop_tag;
+
+	/* receive queue cache line section */
+	____cacheline_aligned struct vnic_rq rq[ENIC_RQ_MAX];
+	unsigned int rq_count;
+	struct vxlan_offload vxlan;
+	u64 rq_truncated_pkts;
+	u64 rq_bad_fcs;
+	struct napi_struct napi[ENIC_RQ_MAX + ENIC_WQ_MAX];
+
+	/* interrupt resource cache line section */
+	____cacheline_aligned struct vnic_intr intr[ENIC_INTR_MAX];
+	unsigned int intr_count;
+	u32 __iomem *legacy_pba;		/* memory-mapped */
+
+	/* completion queue cache line section */
+	____cacheline_aligned struct vnic_cq cq[ENIC_CQ_MAX];
+	unsigned int cq_count;
+	struct enic_rfs_flw_tbl rfs_h;
+	u32 rx_copybreak;
+	u8 rss_key[ENIC_RSS_LEN];
+	struct vnic_gen_stats gen_stats;
+};
+
+static inline struct net_device *vnic_get_netdev(struct vnic_dev *vdev)
+{
+	struct enic *enic = vdev->priv;
+
+	return enic->netdev;
+}
+
+/* wrappers function for kernel log
+ */
+#define vdev_err(vdev, fmt, ...)					\
+	dev_err(&(vdev)->pdev->dev, fmt, ##__VA_ARGS__)
+#define vdev_warn(vdev, fmt, ...)					\
+	dev_warn(&(vdev)->pdev->dev, fmt, ##__VA_ARGS__)
+#define vdev_info(vdev, fmt, ...)					\
+	dev_info(&(vdev)->pdev->dev, fmt, ##__VA_ARGS__)
+
+#define vdev_neterr(vdev, fmt, ...)					\
+	netdev_err(vnic_get_netdev(vdev), fmt, ##__VA_ARGS__)
+#define vdev_netwarn(vdev, fmt, ...)					\
+	netdev_warn(vnic_get_netdev(vdev), fmt, ##__VA_ARGS__)
+#define vdev_netinfo(vdev, fmt, ...)					\
+	netdev_info(vnic_get_netdev(vdev), fmt, ##__VA_ARGS__)
+
+static inline struct device *enic_get_dev(struct enic *enic)
+{
+	return &(enic->pdev->dev);
+}
+
+static inline unsigned int enic_cq_rq(struct enic *enic, unsigned int rq)
+{
+	return rq;
+}
+
+static inline unsigned int enic_cq_wq(struct enic *enic, unsigned int wq)
+{
+	return enic->rq_count + wq;
+}
+
+static inline unsigned int enic_legacy_io_intr(void)
+{
+	return 0;
+}
+
+static inline unsigned int enic_legacy_err_intr(void)
+{
+	return 1;
+}
+
+static inline unsigned int enic_legacy_notify_intr(void)
+{
+	return 2;
+}
+
+static inline unsigned int enic_msix_rq_intr(struct enic *enic,
+	unsigned int rq)
+{
+	return enic->cq[enic_cq_rq(enic, rq)].interrupt_offset;
+}
+
+static inline unsigned int enic_msix_wq_intr(struct enic *enic,
+	unsigned int wq)
+{
+	return enic->cq[enic_cq_wq(enic, wq)].interrupt_offset;
+}
+
+static inline unsigned int enic_msix_err_intr(struct enic *enic)
+{
+	return enic->rq_count + enic->wq_count;
+}
+
+static inline unsigned int enic_msix_notify_intr(struct enic *enic)
+{
+	return enic->rq_count + enic->wq_count + 1;
+}
+
+static inline bool enic_is_err_intr(struct enic *enic, int intr)
+{
+	switch (vnic_dev_get_intr_mode(enic->vdev)) {
+	case VNIC_DEV_INTR_MODE_INTX:
+		return intr == enic_legacy_err_intr();
+	case VNIC_DEV_INTR_MODE_MSIX:
+		return intr == enic_msix_err_intr(enic);
+	case VNIC_DEV_INTR_MODE_MSI:
+	default:
+		return false;
+	}
+}
+
+static inline bool enic_is_notify_intr(struct enic *enic, int intr)
+{
+	switch (vnic_dev_get_intr_mode(enic->vdev)) {
+	case VNIC_DEV_INTR_MODE_INTX:
+		return intr == enic_legacy_notify_intr();
+	case VNIC_DEV_INTR_MODE_MSIX:
+		return intr == enic_msix_notify_intr(enic);
+	case VNIC_DEV_INTR_MODE_MSI:
+	default:
+		return false;
+	}
+}
+
+static inline int enic_dma_map_check(struct enic *enic, dma_addr_t dma_addr)
+{
+	if (unlikely(dma_mapping_error(&enic->pdev->dev, dma_addr))) {
+		net_warn_ratelimited("%s: PCI dma mapping failed!\n",
+				     enic->netdev->name);
+		enic->gen_stats.dma_map_error++;
+
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+
+void enic_reset_addr_lists(struct enic *enic);
+int enic_sriov_enabled(struct enic *enic);
+int enic_is_valid_vf(struct enic *enic, int vf);
+int enic_is_dynamic(struct enic *enic);
+void enic_set_ethtool_ops(struct net_device *netdev);
+int __enic_set_rsskey(struct enic *enic);
+
+#endif /* _ENIC_H_ */