/* 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;
};
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
