1 files changed, 477 insertions, 0 deletions
diff --git a/drivers/net/ethernet/qlogic/qed/qed_sriov.h b/drivers/net/ethernet/qlogic/qed/qed_sriov.h
new file mode 100644
index 000000000..853be06bc
--- /dev/null
+++ b/drivers/net/ethernet/qlogic/qed/qed_sriov.h
@@ -0,0 +1,477 @@
+/* QLogic qed NIC Driver
+ * Copyright (c) 2015-2017  QLogic Corporation
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and /or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef _QED_SRIOV_H
+#define _QED_SRIOV_H
+#include <linux/types.h>
+#include "qed_vf.h"
+
+#define QED_ETH_VF_NUM_MAC_FILTERS 1
+#define QED_ETH_VF_NUM_VLAN_FILTERS 2
+#define QED_VF_ARRAY_LENGTH (3)
+
+#ifdef CONFIG_QED_SRIOV
+#define IS_VF(cdev)             ((cdev)->b_is_vf)
+#define IS_PF(cdev)             (!((cdev)->b_is_vf))
+#define IS_PF_SRIOV(p_hwfn)     (!!((p_hwfn)->cdev->p_iov_info))
+#else
+#define IS_VF(cdev)             (0)
+#define IS_PF(cdev)             (1)
+#define IS_PF_SRIOV(p_hwfn)     (0)
+#endif
+#define IS_PF_SRIOV_ALLOC(p_hwfn)       (!!((p_hwfn)->pf_iov_info))
+
+#define QED_MAX_VF_CHAINS_PER_PF 16
+
+#define QED_ETH_MAX_VF_NUM_VLAN_FILTERS	\
+	(MAX_NUM_VFS * QED_ETH_VF_NUM_VLAN_FILTERS)
+
+enum qed_iov_vport_update_flag {
+	QED_IOV_VP_UPDATE_ACTIVATE,
+	QED_IOV_VP_UPDATE_VLAN_STRIP,
+	QED_IOV_VP_UPDATE_TX_SWITCH,
+	QED_IOV_VP_UPDATE_MCAST,
+	QED_IOV_VP_UPDATE_ACCEPT_PARAM,
+	QED_IOV_VP_UPDATE_RSS,
+	QED_IOV_VP_UPDATE_ACCEPT_ANY_VLAN,
+	QED_IOV_VP_UPDATE_SGE_TPA,
+	QED_IOV_VP_UPDATE_MAX,
+};
+
+struct qed_public_vf_info {
+	/* These copies will later be reflected in the bulletin board,
+	 * but this copy should be newer.
+	 */
+	u8 forced_mac[ETH_ALEN];
+	u16 forced_vlan;
+	u8 mac[ETH_ALEN];
+
+	/* IFLA_VF_LINK_STATE_<X> */
+	int link_state;
+
+	/* Currently configured Tx rate in MB/sec. 0 if unconfigured */
+	int tx_rate;
+
+	/* Trusted VFs can configure promiscuous mode.
+	 * Also store shadow promisc configuration if needed.
+	 */
+	bool is_trusted_configured;
+	bool is_trusted_request;
+	u8 rx_accept_mode;
+	u8 tx_accept_mode;
+	bool accept_any_vlan;
+};
+
+struct qed_iov_vf_init_params {
+	u16 rel_vf_id;
+
+	/* Number of requested Queues; Currently, don't support different
+	 * number of Rx/Tx queues.
+	 */
+
+	u16 num_queues;
+
+	/* Allow the client to choose which qzones to use for Rx/Tx,
+	 * and which queue_base to use for Tx queues on a per-queue basis.
+	 * Notice values should be relative to the PF resources.
+	 */
+	u16 req_rx_queue[QED_MAX_VF_CHAINS_PER_PF];
+	u16 req_tx_queue[QED_MAX_VF_CHAINS_PER_PF];
+};
+
+/* This struct is part of qed_dev and contains data relevant to all hwfns;
+ * Initialized only if SR-IOV cpabability is exposed in PCIe config space.
+ */
+struct qed_hw_sriov_info {
+	int pos;		/* capability position */
+	int nres;		/* number of resources */
+	u32 cap;		/* SR-IOV Capabilities */
+	u16 ctrl;		/* SR-IOV Control */
+	u16 total_vfs;		/* total VFs associated with the PF */
+	u16 num_vfs;		/* number of vfs that have been started */
+	u16 initial_vfs;	/* initial VFs associated with the PF */
+	u16 nr_virtfn;		/* number of VFs available */
+	u16 offset;		/* first VF Routing ID offset */
+	u16 stride;		/* following VF stride */
+	u16 vf_device_id;	/* VF device id */
+	u32 pgsz;		/* page size for BAR alignment */
+	u8 link;		/* Function Dependency Link */
+
+	u32 first_vf_in_pf;
+};
+
+/* This mailbox is maintained per VF in its PF contains all information
+ * required for sending / receiving a message.
+ */
+struct qed_iov_vf_mbx {
+	union vfpf_tlvs *req_virt;
+	dma_addr_t req_phys;
+	union pfvf_tlvs *reply_virt;
+	dma_addr_t reply_phys;
+
+	/* Address in VF where a pending message is located */
+	dma_addr_t pending_req;
+
+	/* Message from VF awaits handling */
+	bool b_pending_msg;
+
+	u8 *offset;
+
+	/* saved VF request header */
+	struct vfpf_first_tlv first_tlv;
+};
+
+#define QED_IOV_LEGACY_QID_RX (0)
+#define QED_IOV_LEGACY_QID_TX (1)
+#define QED_IOV_QID_INVALID (0xFE)
+
+struct qed_vf_queue_cid {
+	bool b_is_tx;
+	struct qed_queue_cid *p_cid;
+};
+
+/* Describes a qzone associated with the VF */
+struct qed_vf_queue {
+	u16 fw_rx_qid;
+	u16 fw_tx_qid;
+
+	struct qed_vf_queue_cid cids[MAX_QUEUES_PER_QZONE];
+};
+
+enum vf_state {
+	VF_FREE = 0,		/* VF ready to be acquired holds no resc */
+	VF_ACQUIRED,		/* VF, acquired, but not initalized */
+	VF_ENABLED,		/* VF, Enabled */
+	VF_RESET,		/* VF, FLR'd, pending cleanup */
+	VF_STOPPED		/* VF, Stopped */
+};
+
+struct qed_vf_vlan_shadow {
+	bool used;
+	u16 vid;
+};
+
+struct qed_vf_shadow_config {
+	/* Shadow copy of all guest vlans */
+	struct qed_vf_vlan_shadow vlans[QED_ETH_VF_NUM_VLAN_FILTERS + 1];
+
+	/* Shadow copy of all configured MACs; Empty if forcing MACs */
+	u8 macs[QED_ETH_VF_NUM_MAC_FILTERS][ETH_ALEN];
+	u8 inner_vlan_removal;
+};
+
+/* PFs maintain an array of this structure, per VF */
+struct qed_vf_info {
+	struct qed_iov_vf_mbx vf_mbx;
+	enum vf_state state;
+	bool b_init;
+	bool b_malicious;
+	u8 to_disable;
+
+	struct qed_bulletin bulletin;
+	dma_addr_t vf_bulletin;
+
+	/* PF saves a copy of the last VF acquire message */
+	struct vfpf_acquire_tlv acquire;
+
+	u32 concrete_fid;
+	u16 opaque_fid;
+	u16 mtu;
+
+	u8 vport_id;
+	u8 relative_vf_id;
+	u8 abs_vf_id;
+#define QED_VF_ABS_ID(p_hwfn, p_vf)	(QED_PATH_ID(p_hwfn) ?		      \
+					 (p_vf)->abs_vf_id + MAX_NUM_VFS_BB : \
+					 (p_vf)->abs_vf_id)
+
+	u8 vport_instance;
+	u8 num_rxqs;
+	u8 num_txqs;
+
+	u16 rx_coal;
+	u16 tx_coal;
+
+	u8 num_sbs;
+
+	u8 num_mac_filters;
+	u8 num_vlan_filters;
+
+	struct qed_vf_queue vf_queues[QED_MAX_VF_CHAINS_PER_PF];
+	u16 igu_sbs[QED_MAX_VF_CHAINS_PER_PF];
+	u8 num_active_rxqs;
+	struct qed_public_vf_info p_vf_info;
+	bool spoof_chk;
+	bool req_spoofchk_val;
+
+	/* Stores the configuration requested by VF */
+	struct qed_vf_shadow_config shadow_config;
+
+	/* A bitfield using bulletin's valid-map bits, used to indicate
+	 * which of the bulletin board features have been configured.
+	 */
+	u64 configured_features;
+#define QED_IOV_CONFIGURED_FEATURES_MASK        ((1 << MAC_ADDR_FORCED) | \
+						 (1 << VLAN_ADDR_FORCED))
+};
+
+/* This structure is part of qed_hwfn and used only for PFs that have sriov
+ * capability enabled.
+ */
+struct qed_pf_iov {
+	struct qed_vf_info vfs_array[MAX_NUM_VFS];
+	u64 pending_flr[QED_VF_ARRAY_LENGTH];
+
+	/* Allocate message address continuosuly and split to each VF */
+	void *mbx_msg_virt_addr;
+	dma_addr_t mbx_msg_phys_addr;
+	u32 mbx_msg_size;
+	void *mbx_reply_virt_addr;
+	dma_addr_t mbx_reply_phys_addr;
+	u32 mbx_reply_size;
+	void *p_bulletins;
+	dma_addr_t bulletins_phys;
+	u32 bulletins_size;
+};
+
+enum qed_iov_wq_flag {
+	QED_IOV_WQ_MSG_FLAG,
+	QED_IOV_WQ_SET_UNICAST_FILTER_FLAG,
+	QED_IOV_WQ_BULLETIN_UPDATE_FLAG,
+	QED_IOV_WQ_STOP_WQ_FLAG,
+	QED_IOV_WQ_FLR_FLAG,
+	QED_IOV_WQ_TRUST_FLAG,
+	QED_IOV_WQ_VF_FORCE_LINK_QUERY_FLAG,
+};
+
+#ifdef CONFIG_QED_SRIOV
+/**
+ * @brief Check if given VF ID @vfid is valid
+ *        w.r.t. @b_enabled_only value
+ *        if b_enabled_only = true - only enabled VF id is valid
+ *        else any VF id less than max_vfs is valid
+ *
+ * @param p_hwfn
+ * @param rel_vf_id - Relative VF ID
+ * @param b_enabled_only - consider only enabled VF
+ * @param b_non_malicious - true iff we want to validate vf isn't malicious.
+ *
+ * @return bool - true for valid VF ID
+ */
+bool qed_iov_is_valid_vfid(struct qed_hwfn *p_hwfn,
+			   int rel_vf_id,
+			   bool b_enabled_only, bool b_non_malicious);
+
+/**
+ * @brief - Given a VF index, return index of next [including that] active VF.
+ *
+ * @param p_hwfn
+ * @param rel_vf_id
+ *
+ * @return MAX_NUM_VFS in case no further active VFs, otherwise index.
+ */
+u16 qed_iov_get_next_active_vf(struct qed_hwfn *p_hwfn, u16 rel_vf_id);
+
+void qed_iov_bulletin_set_udp_ports(struct qed_hwfn *p_hwfn,
+				    int vfid, u16 vxlan_port, u16 geneve_port);
+
+/**
+ * @brief Read sriov related information and allocated resources
+ *  reads from configuraiton space, shmem, etc.
+ *
+ * @param p_hwfn
+ *
+ * @return int
+ */
+int qed_iov_hw_info(struct qed_hwfn *p_hwfn);
+
+/**
+ * @brief qed_add_tlv - place a given tlv on the tlv buffer at next offset
+ *
+ * @param p_hwfn
+ * @param p_iov
+ * @param type
+ * @param length
+ *
+ * @return pointer to the newly placed tlv
+ */
+void *qed_add_tlv(struct qed_hwfn *p_hwfn, u8 **offset, u16 type, u16 length);
+
+/**
+ * @brief list the types and lengths of the tlvs on the buffer
+ *
+ * @param p_hwfn
+ * @param tlvs_list
+ */
+void qed_dp_tlv_list(struct qed_hwfn *p_hwfn, void *tlvs_list);
+
+/**
+ * @brief qed_iov_alloc - allocate sriov related resources
+ *
+ * @param p_hwfn
+ *
+ * @return int
+ */
+int qed_iov_alloc(struct qed_hwfn *p_hwfn);
+
+/**
+ * @brief qed_iov_setup - setup sriov related resources
+ *
+ * @param p_hwfn
+ */
+void qed_iov_setup(struct qed_hwfn *p_hwfn);
+
+/**
+ * @brief qed_iov_free - free sriov related resources
+ *
+ * @param p_hwfn
+ */
+void qed_iov_free(struct qed_hwfn *p_hwfn);
+
+/**
+ * @brief free sriov related memory that was allocated during hw_prepare
+ *
+ * @param cdev
+ */
+void qed_iov_free_hw_info(struct qed_dev *cdev);
+
+/**
+ * @brief Mark structs of vfs that have been FLR-ed.
+ *
+ * @param p_hwfn
+ * @param disabled_vfs - bitmask of all VFs on path that were FLRed
+ *
+ * @return true iff one of the PF's vfs got FLRed. false otherwise.
+ */
+bool qed_iov_mark_vf_flr(struct qed_hwfn *p_hwfn, u32 *disabled_vfs);
+
+/**
+ * @brief Search extended TLVs in request/reply buffer.
+ *
+ * @param p_hwfn
+ * @param p_tlvs_list - Pointer to tlvs list
+ * @param req_type - Type of TLV
+ *
+ * @return pointer to tlv type if found, otherwise returns NULL.
+ */
+void *qed_iov_search_list_tlvs(struct qed_hwfn *p_hwfn,
+			       void *p_tlvs_list, u16 req_type);
+
+void qed_iov_wq_stop(struct qed_dev *cdev, bool schedule_first);
+int qed_iov_wq_start(struct qed_dev *cdev);
+
+void qed_schedule_iov(struct qed_hwfn *hwfn, enum qed_iov_wq_flag flag);
+void qed_vf_start_iov_wq(struct qed_dev *cdev);
+int qed_sriov_disable(struct qed_dev *cdev, bool pci_enabled);
+void qed_inform_vf_link_state(struct qed_hwfn *hwfn);
+#else
+static inline bool
+qed_iov_is_valid_vfid(struct qed_hwfn *p_hwfn,
+		      int rel_vf_id, bool b_enabled_only, bool b_non_malicious)
+{
+	return false;
+}
+
+static inline u16 qed_iov_get_next_active_vf(struct qed_hwfn *p_hwfn,
+					     u16 rel_vf_id)
+{
+	return MAX_NUM_VFS;
+}
+
+static inline void
+qed_iov_bulletin_set_udp_ports(struct qed_hwfn *p_hwfn, int vfid,
+			       u16 vxlan_port, u16 geneve_port)
+{
+}
+
+static inline int qed_iov_hw_info(struct qed_hwfn *p_hwfn)
+{
+	return 0;
+}
+
+static inline int qed_iov_alloc(struct qed_hwfn *p_hwfn)
+{
+	return 0;
+}
+
+static inline void qed_iov_setup(struct qed_hwfn *p_hwfn)
+{
+}
+
+static inline void qed_iov_free(struct qed_hwfn *p_hwfn)
+{
+}
+
+static inline void qed_iov_free_hw_info(struct qed_dev *cdev)
+{
+}
+
+static inline bool qed_iov_mark_vf_flr(struct qed_hwfn *p_hwfn,
+				       u32 *disabled_vfs)
+{
+	return false;
+}
+
+static inline void qed_iov_wq_stop(struct qed_dev *cdev, bool schedule_first)
+{
+}
+
+static inline int qed_iov_wq_start(struct qed_dev *cdev)
+{
+	return 0;
+}
+
+static inline void qed_schedule_iov(struct qed_hwfn *hwfn,
+				    enum qed_iov_wq_flag flag)
+{
+}
+
+static inline void qed_vf_start_iov_wq(struct qed_dev *cdev)
+{
+}
+
+static inline int qed_sriov_disable(struct qed_dev *cdev, bool pci_enabled)
+{
+	return 0;
+}
+
+static inline void qed_inform_vf_link_state(struct qed_hwfn *hwfn)
+{
+}
+#endif
+
+#define qed_for_each_vf(_p_hwfn, _i)			  \
+	for (_i = qed_iov_get_next_active_vf(_p_hwfn, 0); \
+	     _i < MAX_NUM_VFS;				  \
+	     _i = qed_iov_get_next_active_vf(_p_hwfn, _i + 1))
+
+#endif