diff options
Diffstat (limited to 'drivers/net/ethernet/intel/idpf/idpf.h')
| -rw-r--r-- | drivers/net/ethernet/intel/idpf/idpf.h | 1036 |
1 files changed, 1036 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/idpf/idpf.h b/drivers/net/ethernet/intel/idpf/idpf.h new file mode 100644 index 000000000000..8cfc68cbfa06 --- /dev/null +++ b/drivers/net/ethernet/intel/idpf/idpf.h @@ -0,0 +1,1036 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* Copyright (C) 2023 Intel Corporation */ + +#ifndef _IDPF_H_ +#define _IDPF_H_ + +/* Forward declaration */ +struct idpf_adapter; +struct idpf_vport; +struct idpf_vport_max_q; + +#include <net/pkt_sched.h> +#include <linux/aer.h> +#include <linux/etherdevice.h> +#include <linux/ioport.h> +#include <linux/pci.h> +#include <linux/bitfield.h> +#include <linux/sctp.h> +#include <linux/ethtool_netlink.h> +#include <net/gro.h> + +#include <linux/net/intel/iidc_rdma.h> +#include <linux/net/intel/iidc_rdma_idpf.h> + +#include "virtchnl2.h" +#include "idpf_txrx.h" +#include "idpf_controlq.h" + +#define GETMAXVAL(num_bits) GENMASK((num_bits) - 1, 0) + +#define IDPF_NO_FREE_SLOT 0xffff + +/* Default Mailbox settings */ +#define IDPF_NUM_FILTERS_PER_MSG 20 +#define IDPF_NUM_DFLT_MBX_Q 2 /* includes both TX and RX */ +#define IDPF_DFLT_MBX_Q_LEN 64 +#define IDPF_DFLT_MBX_ID -1 +/* maximum number of times to try before resetting mailbox */ +#define IDPF_MB_MAX_ERR 20 +#define IDPF_NUM_CHUNKS_PER_MSG(struct_sz, chunk_sz) \ + ((IDPF_CTLQ_MAX_BUF_LEN - (struct_sz)) / (chunk_sz)) + +#define IDPF_WAIT_FOR_MARKER_TIMEO 500 +#define IDPF_MAX_WAIT 500 + +/* available message levels */ +#define IDPF_AVAIL_NETIF_M (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK) + +#define IDPF_DIM_PROFILE_SLOTS 5 + +#define IDPF_VIRTCHNL_VERSION_MAJOR VIRTCHNL2_VERSION_MAJOR_2 +#define IDPF_VIRTCHNL_VERSION_MINOR VIRTCHNL2_VERSION_MINOR_0 + +/** + * struct idpf_mac_filter + * @list: list member field + * @macaddr: MAC address + * @remove: filter should be removed (virtchnl) + * @add: filter should be added (virtchnl) + */ +struct idpf_mac_filter { + struct list_head list; + u8 macaddr[ETH_ALEN]; + bool remove; + bool add; +}; + +/** + * enum idpf_state - State machine to handle bring up + * @__IDPF_VER_CHECK: Negotiate virtchnl version + * @__IDPF_GET_CAPS: Negotiate capabilities + * @__IDPF_INIT_SW: Init based on given capabilities + * @__IDPF_STATE_LAST: Must be last, used to determine size + */ +enum idpf_state { + __IDPF_VER_CHECK, + __IDPF_GET_CAPS, + __IDPF_INIT_SW, + __IDPF_STATE_LAST, +}; + +/** + * enum idpf_flags - Hard reset causes. + * @IDPF_HR_FUNC_RESET: Hard reset when TxRx timeout + * @IDPF_HR_DRV_LOAD: Set on driver load for a clean HW + * @IDPF_HR_RESET_IN_PROG: Reset in progress + * @IDPF_REMOVE_IN_PROG: Driver remove in progress + * @IDPF_MB_INTR_MODE: Mailbox in interrupt mode + * @IDPF_VC_CORE_INIT: virtchnl core has been init + * @IDPF_FLAGS_NBITS: Must be last + */ +enum idpf_flags { + IDPF_HR_FUNC_RESET, + IDPF_HR_DRV_LOAD, + IDPF_HR_RESET_IN_PROG, + IDPF_REMOVE_IN_PROG, + IDPF_MB_INTR_MODE, + IDPF_VC_CORE_INIT, + IDPF_FLAGS_NBITS, +}; + +/** + * enum idpf_cap_field - Offsets into capabilities struct for specific caps + * @IDPF_BASE_CAPS: generic base capabilities + * @IDPF_CSUM_CAPS: checksum offload capabilities + * @IDPF_SEG_CAPS: segmentation offload capabilities + * @IDPF_RSS_CAPS: RSS offload capabilities + * @IDPF_HSPLIT_CAPS: Header split capabilities + * @IDPF_RSC_CAPS: RSC offload capabilities + * @IDPF_OTHER_CAPS: miscellaneous offloads + * + * Used when checking for a specific capability flag since different capability + * sets are not mutually exclusive numerically, the caller must specify which + * type of capability they are checking for. + */ +enum idpf_cap_field { + IDPF_BASE_CAPS = -1, + IDPF_CSUM_CAPS = offsetof(struct virtchnl2_get_capabilities, + csum_caps), + IDPF_SEG_CAPS = offsetof(struct virtchnl2_get_capabilities, + seg_caps), + IDPF_RSS_CAPS = offsetof(struct virtchnl2_get_capabilities, + rss_caps), + IDPF_HSPLIT_CAPS = offsetof(struct virtchnl2_get_capabilities, + hsplit_caps), + IDPF_RSC_CAPS = offsetof(struct virtchnl2_get_capabilities, + rsc_caps), + IDPF_OTHER_CAPS = offsetof(struct virtchnl2_get_capabilities, + other_caps), +}; + +/** + * enum idpf_vport_state - Current vport state + * @IDPF_VPORT_UP: Vport is up + * @IDPF_VPORT_STATE_NBITS: Must be last, number of states + */ +enum idpf_vport_state { + IDPF_VPORT_UP, + IDPF_VPORT_STATE_NBITS +}; + +/** + * struct idpf_netdev_priv - Struct to store vport back pointer + * @adapter: Adapter back pointer + * @vport: Vport back pointer + * @vport_id: Vport identifier + * @link_speed_mbps: Link speed in mbps + * @vport_idx: Relative vport index + * @max_tx_hdr_size: Max header length hardware can support + * @tx_max_bufs: Max buffers that can be transmitted with scatter-gather + * @state: See enum idpf_vport_state + * @netstats: Packet and byte stats + * @stats_lock: Lock to protect stats update + */ +struct idpf_netdev_priv { + struct idpf_adapter *adapter; + struct idpf_vport *vport; + u32 vport_id; + u32 link_speed_mbps; + u16 vport_idx; + u16 max_tx_hdr_size; + u16 tx_max_bufs; + DECLARE_BITMAP(state, IDPF_VPORT_STATE_NBITS); + struct rtnl_link_stats64 netstats; + spinlock_t stats_lock; +}; + +/** + * struct idpf_reset_reg - Reset register offsets/masks + * @rstat: Reset status register + * @rstat_m: Reset status mask + */ +struct idpf_reset_reg { + void __iomem *rstat; + u32 rstat_m; +}; + +/** + * struct idpf_vport_max_q - Queue limits + * @max_rxq: Maximum number of RX queues supported + * @max_txq: Maixmum number of TX queues supported + * @max_bufq: In splitq, maximum number of buffer queues supported + * @max_complq: In splitq, maximum number of completion queues supported + */ +struct idpf_vport_max_q { + u16 max_rxq; + u16 max_txq; + u16 max_bufq; + u16 max_complq; +}; + +/** + * struct idpf_reg_ops - Device specific register operation function pointers + * @ctlq_reg_init: Mailbox control queue register initialization + * @intr_reg_init: Traffic interrupt register initialization + * @mb_intr_reg_init: Mailbox interrupt register initialization + * @reset_reg_init: Reset register initialization + * @trigger_reset: Trigger a reset to occur + * @ptp_reg_init: PTP register initialization + */ +struct idpf_reg_ops { + void (*ctlq_reg_init)(struct idpf_adapter *adapter, + struct idpf_ctlq_create_info *cq); + int (*intr_reg_init)(struct idpf_vport *vport); + void (*mb_intr_reg_init)(struct idpf_adapter *adapter); + void (*reset_reg_init)(struct idpf_adapter *adapter); + void (*trigger_reset)(struct idpf_adapter *adapter, + enum idpf_flags trig_cause); + void (*ptp_reg_init)(const struct idpf_adapter *adapter); +}; + +#define IDPF_MMIO_REG_NUM_STATIC 2 +#define IDPF_PF_MBX_REGION_SZ 4096 +#define IDPF_PF_RSTAT_REGION_SZ 2048 +#define IDPF_VF_MBX_REGION_SZ 10240 +#define IDPF_VF_RSTAT_REGION_SZ 2048 + +/** + * struct idpf_dev_ops - Device specific operations + * @reg_ops: Register operations + * @idc_init: IDC initialization + * @static_reg_info: array of mailbox and rstat register info + */ +struct idpf_dev_ops { + struct idpf_reg_ops reg_ops; + + int (*idc_init)(struct idpf_adapter *adapter); + + /* static_reg_info[0] is mailbox region, static_reg_info[1] is rstat */ + struct resource static_reg_info[IDPF_MMIO_REG_NUM_STATIC]; +}; + +/** + * enum idpf_vport_reset_cause - Vport soft reset causes + * @IDPF_SR_Q_CHANGE: Soft reset queue change + * @IDPF_SR_Q_DESC_CHANGE: Soft reset descriptor change + * @IDPF_SR_MTU_CHANGE: Soft reset MTU change + * @IDPF_SR_RSC_CHANGE: Soft reset RSC change + */ +enum idpf_vport_reset_cause { + IDPF_SR_Q_CHANGE, + IDPF_SR_Q_DESC_CHANGE, + IDPF_SR_MTU_CHANGE, + IDPF_SR_RSC_CHANGE, +}; + +/** + * enum idpf_vport_flags - Vport flags + * @IDPF_VPORT_DEL_QUEUES: To send delete queues message + * @IDPF_VPORT_FLAGS_NBITS: Must be last + */ +enum idpf_vport_flags { + IDPF_VPORT_DEL_QUEUES, + IDPF_VPORT_FLAGS_NBITS, +}; + +/** + * struct idpf_tstamp_stats - Tx timestamp statistics + * @stats_sync: See struct u64_stats_sync + * @packets: Number of packets successfully timestamped by the hardware + * @discarded: Number of Tx skbs discarded due to cached PHC + * being too old to correctly extend timestamp + * @flushed: Number of Tx skbs flushed due to interface closed + */ +struct idpf_tstamp_stats { + struct u64_stats_sync stats_sync; + u64_stats_t packets; + u64_stats_t discarded; + u64_stats_t flushed; +}; + +struct idpf_port_stats { + struct u64_stats_sync stats_sync; + u64_stats_t rx_hw_csum_err; + u64_stats_t rx_hsplit; + u64_stats_t rx_hsplit_hbo; + u64_stats_t rx_bad_descs; + u64_stats_t tx_linearize; + u64_stats_t tx_busy; + u64_stats_t tx_drops; + u64_stats_t tx_dma_map_errs; + struct virtchnl2_vport_stats vport_stats; +}; + +struct idpf_fsteer_fltr { + struct list_head list; + u32 loc; + u32 q_index; +}; + +/** + * struct idpf_vport - Handle for netdevices and queue resources + * @num_txq: Number of allocated TX queues + * @num_complq: Number of allocated completion queues + * @txq_desc_count: TX queue descriptor count + * @complq_desc_count: Completion queue descriptor count + * @compln_clean_budget: Work budget for completion clean + * @num_txq_grp: Number of TX queue groups + * @txq_grps: Array of TX queue groups + * @txq_model: Split queue or single queue queuing model + * @txqs: Used only in hotpath to get to the right queue very fast + * @crc_enable: Enable CRC insertion offload + * @xdpsq_share: whether XDPSQ sharing is enabled + * @num_xdp_txq: number of XDPSQs + * @xdp_txq_offset: index of the first XDPSQ (== number of regular SQs) + * @xdp_prog: installed XDP program + * @num_rxq: Number of allocated RX queues + * @num_bufq: Number of allocated buffer queues + * @rxq_desc_count: RX queue descriptor count. *MUST* have enough descriptors + * to complete all buffer descriptors for all buffer queues in + * the worst case. + * @num_bufqs_per_qgrp: Buffer queues per RX queue in a given grouping + * @bufq_desc_count: Buffer queue descriptor count + * @num_rxq_grp: Number of RX queues in a group + * @rxq_grps: Total number of RX groups. Number of groups * number of RX per + * group will yield total number of RX queues. + * @rxq_model: Splitq queue or single queue queuing model + * @rx_ptype_lkup: Lookup table for ptypes on RX + * @vdev_info: IDC vport device info pointer + * @adapter: back pointer to associated adapter + * @netdev: Associated net_device. Each vport should have one and only one + * associated netdev. + * @flags: See enum idpf_vport_flags + * @vport_type: Default SRIOV, SIOV, etc. + * @vport_id: Device given vport identifier + * @idx: Software index in adapter vports struct + * @default_vport: Use this vport if one isn't specified + * @base_rxd: True if the driver should use base descriptors instead of flex + * @num_q_vectors: Number of IRQ vectors allocated + * @q_vectors: Array of queue vectors + * @q_vector_idxs: Starting index of queue vectors + * @noirq_dyn_ctl: register to enable/disable the vector for NOIRQ queues + * @noirq_dyn_ctl_ena: value to write to the above to enable it + * @noirq_v_idx: ID of the NOIRQ vector + * @max_mtu: device given max possible MTU + * @default_mac_addr: device will give a default MAC to use + * @rx_itr_profile: RX profiles for Dynamic Interrupt Moderation + * @tx_itr_profile: TX profiles for Dynamic Interrupt Moderation + * @port_stats: per port csum, header split, and other offload stats + * @link_up: True if link is up + * @tx_tstamp_caps: Capabilities negotiated for Tx timestamping + * @tstamp_config: The Tx tstamp config + * @tstamp_task: Tx timestamping task + * @tstamp_stats: Tx timestamping statistics + */ +struct idpf_vport { + u16 num_txq; + u16 num_complq; + u32 txq_desc_count; + u32 complq_desc_count; + u32 compln_clean_budget; + u16 num_txq_grp; + struct idpf_txq_group *txq_grps; + u32 txq_model; + struct idpf_tx_queue **txqs; + bool crc_enable; + + bool xdpsq_share; + u16 num_xdp_txq; + u16 xdp_txq_offset; + struct bpf_prog *xdp_prog; + + u16 num_rxq; + u16 num_bufq; + u32 rxq_desc_count; + u8 num_bufqs_per_qgrp; + u32 bufq_desc_count[IDPF_MAX_BUFQS_PER_RXQ_GRP]; + u16 num_rxq_grp; + struct idpf_rxq_group *rxq_grps; + u32 rxq_model; + struct libeth_rx_pt *rx_ptype_lkup; + + struct iidc_rdma_vport_dev_info *vdev_info; + + struct idpf_adapter *adapter; + struct net_device *netdev; + DECLARE_BITMAP(flags, IDPF_VPORT_FLAGS_NBITS); + u16 vport_type; + u32 vport_id; + u16 idx; + bool default_vport; + bool base_rxd; + + u16 num_q_vectors; + struct idpf_q_vector *q_vectors; + u16 *q_vector_idxs; + + void __iomem *noirq_dyn_ctl; + u32 noirq_dyn_ctl_ena; + u16 noirq_v_idx; + + u16 max_mtu; + u8 default_mac_addr[ETH_ALEN]; + u16 rx_itr_profile[IDPF_DIM_PROFILE_SLOTS]; + u16 tx_itr_profile[IDPF_DIM_PROFILE_SLOTS]; + struct idpf_port_stats port_stats; + + bool link_up; + + struct idpf_ptp_vport_tx_tstamp_caps *tx_tstamp_caps; + struct kernel_hwtstamp_config tstamp_config; + struct work_struct tstamp_task; + struct idpf_tstamp_stats tstamp_stats; +}; + +/** + * enum idpf_user_flags + * @__IDPF_USER_FLAG_HSPLIT: header split state + * @__IDPF_PROMISC_UC: Unicast promiscuous mode + * @__IDPF_PROMISC_MC: Multicast promiscuous mode + * @__IDPF_USER_FLAGS_NBITS: Must be last + */ +enum idpf_user_flags { + __IDPF_USER_FLAG_HSPLIT = 0U, + __IDPF_PROMISC_UC = 32, + __IDPF_PROMISC_MC, + + __IDPF_USER_FLAGS_NBITS, +}; + +/** + * struct idpf_rss_data - Associated RSS data + * @rss_key_size: Size of RSS hash key + * @rss_key: RSS hash key + * @rss_lut_size: Size of RSS lookup table + * @rss_lut: RSS lookup table + * @cached_lut: Used to restore previously init RSS lut + */ +struct idpf_rss_data { + u16 rss_key_size; + u8 *rss_key; + u16 rss_lut_size; + u32 *rss_lut; + u32 *cached_lut; +}; + +/** + * struct idpf_q_coalesce - User defined coalescing configuration values for + * a single queue. + * @tx_intr_mode: Dynamic TX ITR or not + * @rx_intr_mode: Dynamic RX ITR or not + * @tx_coalesce_usecs: TX interrupt throttling rate + * @rx_coalesce_usecs: RX interrupt throttling rate + * + * Used to restore user coalescing configuration after a reset. + */ +struct idpf_q_coalesce { + u32 tx_intr_mode; + u32 rx_intr_mode; + u32 tx_coalesce_usecs; + u32 rx_coalesce_usecs; +}; + +/** + * struct idpf_vport_user_config_data - User defined configuration values for + * each vport. + * @rss_data: See struct idpf_rss_data + * @q_coalesce: Array of per queue coalescing data + * @num_req_tx_qs: Number of user requested TX queues through ethtool + * @num_req_rx_qs: Number of user requested RX queues through ethtool + * @num_req_txq_desc: Number of user requested TX queue descriptors through + * ethtool + * @num_req_rxq_desc: Number of user requested RX queue descriptors through + * ethtool + * @xdp_prog: requested XDP program to install + * @user_flags: User toggled config flags + * @mac_filter_list: List of MAC filters + * @num_fsteer_fltrs: number of flow steering filters + * @flow_steer_list: list of flow steering filters + * + * Used to restore configuration after a reset as the vport will get wiped. + */ +struct idpf_vport_user_config_data { + struct idpf_rss_data rss_data; + struct idpf_q_coalesce *q_coalesce; + u16 num_req_tx_qs; + u16 num_req_rx_qs; + u32 num_req_txq_desc; + u32 num_req_rxq_desc; + struct bpf_prog *xdp_prog; + DECLARE_BITMAP(user_flags, __IDPF_USER_FLAGS_NBITS); + struct list_head mac_filter_list; + u32 num_fsteer_fltrs; + struct list_head flow_steer_list; +}; + +/** + * enum idpf_vport_config_flags - Vport config flags + * @IDPF_VPORT_REG_NETDEV: Register netdev + * @IDPF_VPORT_UP_REQUESTED: Set if interface up is requested on core reset + * @IDPF_VPORT_CONFIG_FLAGS_NBITS: Must be last + */ +enum idpf_vport_config_flags { + IDPF_VPORT_REG_NETDEV, + IDPF_VPORT_UP_REQUESTED, + IDPF_VPORT_CONFIG_FLAGS_NBITS, +}; + +/** + * struct idpf_avail_queue_info + * @avail_rxq: Available RX queues + * @avail_txq: Available TX queues + * @avail_bufq: Available buffer queues + * @avail_complq: Available completion queues + * + * Maintain total queues available after allocating max queues to each vport. + */ +struct idpf_avail_queue_info { + u16 avail_rxq; + u16 avail_txq; + u16 avail_bufq; + u16 avail_complq; +}; + +/** + * struct idpf_vector_info - Utility structure to pass function arguments as a + * structure + * @num_req_vecs: Vectors required based on the number of queues updated by the + * user via ethtool + * @num_curr_vecs: Current number of vectors, must be >= @num_req_vecs + * @index: Relative starting index for vectors + * @default_vport: Vectors are for default vport + */ +struct idpf_vector_info { + u16 num_req_vecs; + u16 num_curr_vecs; + u16 index; + bool default_vport; +}; + +/** + * struct idpf_vector_lifo - Stack to maintain vector indexes used for vector + * distribution algorithm + * @top: Points to stack top i.e. next available vector index + * @base: Always points to start of the free pool + * @size: Total size of the vector stack + * @vec_idx: Array to store all the vector indexes + * + * Vector stack maintains all the relative vector indexes at the *adapter* + * level. This stack is divided into 2 parts, first one is called as 'default + * pool' and other one is called 'free pool'. Vector distribution algorithm + * gives priority to default vports in a way that at least IDPF_MIN_Q_VEC + * vectors are allocated per default vport and the relative vector indexes for + * those are maintained in default pool. Free pool contains all the unallocated + * vector indexes which can be allocated on-demand basis. Mailbox vector index + * is maintained in the default pool of the stack. + */ +struct idpf_vector_lifo { + u16 top; + u16 base; + u16 size; + u16 *vec_idx; +}; + +/** + * struct idpf_vport_config - Vport configuration data + * @user_config: see struct idpf_vport_user_config_data + * @max_q: Maximum possible queues + * @req_qs_chunks: Queue chunk data for requested queues + * @mac_filter_list_lock: Lock to protect mac filters + * @flags: See enum idpf_vport_config_flags + */ +struct idpf_vport_config { + struct idpf_vport_user_config_data user_config; + struct idpf_vport_max_q max_q; + struct virtchnl2_add_queues *req_qs_chunks; + spinlock_t mac_filter_list_lock; + DECLARE_BITMAP(flags, IDPF_VPORT_CONFIG_FLAGS_NBITS); +}; + +struct idpf_vc_xn_manager; + +#define idpf_for_each_vport(adapter, iter) \ + for (struct idpf_vport **__##iter = &(adapter)->vports[0], \ + *iter = (adapter)->max_vports ? *__##iter : NULL; \ + iter; \ + iter = (++__##iter) < &(adapter)->vports[(adapter)->max_vports] ? \ + *__##iter : NULL) + +/** + * struct idpf_adapter - Device data struct generated on probe + * @pdev: PCI device struct given on probe + * @virt_ver_maj: Virtchnl version major + * @virt_ver_min: Virtchnl version minor + * @msg_enable: Debug message level enabled + * @mb_wait_count: Number of times mailbox was attempted initialization + * @state: Init state machine + * @flags: See enum idpf_flags + * @reset_reg: See struct idpf_reset_reg + * @hw: Device access data + * @num_avail_msix: Available number of MSIX vectors + * @num_msix_entries: Number of entries in MSIX table + * @msix_entries: MSIX table + * @num_rdma_msix_entries: Available number of MSIX vectors for RDMA + * @rdma_msix_entries: RDMA MSIX table + * @req_vec_chunks: Requested vector chunk data + * @mb_vector: Mailbox vector data + * @vector_stack: Stack to store the msix vector indexes + * @irq_mb_handler: Handler for hard interrupt for mailbox + * @tx_timeout_count: Number of TX timeouts that have occurred + * @avail_queues: Device given queue limits + * @vports: Array to store vports created by the driver + * @netdevs: Associated Vport netdevs + * @vport_params_reqd: Vport params requested + * @vport_params_recvd: Vport params received + * @vport_ids: Array of device given vport identifiers + * @vport_config: Vport config parameters + * @max_vports: Maximum vports that can be allocated + * @num_alloc_vports: Current number of vports allocated + * @next_vport: Next free slot in pf->vport[] - 0-based! + * @init_task: Initialization task + * @init_wq: Workqueue for initialization task + * @serv_task: Periodically recurring maintenance task + * @serv_wq: Workqueue for service task + * @mbx_task: Task to handle mailbox interrupts + * @mbx_wq: Workqueue for mailbox responses + * @vc_event_task: Task to handle out of band virtchnl event notifications + * @vc_event_wq: Workqueue for virtchnl events + * @stats_task: Periodic statistics retrieval task + * @stats_wq: Workqueue for statistics task + * @caps: Negotiated capabilities with device + * @vcxn_mngr: Virtchnl transaction manager + * @dev_ops: See idpf_dev_ops + * @cdev_info: IDC core device info pointer + * @num_vfs: Number of allocated VFs through sysfs. PF does not directly talk + * to VFs but is used to initialize them + * @crc_enable: Enable CRC insertion offload + * @req_tx_splitq: TX split or single queue model to request + * @req_rx_splitq: RX split or single queue model to request + * @vport_ctrl_lock: Lock to protect the vport control flow + * @vector_lock: Lock to protect vector distribution + * @queue_lock: Lock to protect queue distribution + * @vc_buf_lock: Lock to protect virtchnl buffer + * @ptp: Storage for PTP-related data + */ +struct idpf_adapter { + struct pci_dev *pdev; + u32 virt_ver_maj; + u32 virt_ver_min; + + u32 msg_enable; + u32 mb_wait_count; + enum idpf_state state; + DECLARE_BITMAP(flags, IDPF_FLAGS_NBITS); + struct idpf_reset_reg reset_reg; + struct idpf_hw hw; + u16 num_avail_msix; + u16 num_msix_entries; + struct msix_entry *msix_entries; + u16 num_rdma_msix_entries; + struct msix_entry *rdma_msix_entries; + struct virtchnl2_alloc_vectors *req_vec_chunks; + struct idpf_q_vector mb_vector; + struct idpf_vector_lifo vector_stack; + irqreturn_t (*irq_mb_handler)(int irq, void *data); + + u32 tx_timeout_count; + struct idpf_avail_queue_info avail_queues; + struct idpf_vport **vports; + struct net_device **netdevs; + struct virtchnl2_create_vport **vport_params_reqd; + struct virtchnl2_create_vport **vport_params_recvd; + u32 *vport_ids; + + struct idpf_vport_config **vport_config; + u16 max_vports; + u16 num_alloc_vports; + u16 next_vport; + + struct delayed_work init_task; + struct workqueue_struct *init_wq; + struct delayed_work serv_task; + struct workqueue_struct *serv_wq; + struct delayed_work mbx_task; + struct workqueue_struct *mbx_wq; + struct delayed_work vc_event_task; + struct workqueue_struct *vc_event_wq; + struct delayed_work stats_task; + struct workqueue_struct *stats_wq; + struct virtchnl2_get_capabilities caps; + struct idpf_vc_xn_manager *vcxn_mngr; + + struct idpf_dev_ops dev_ops; + struct iidc_rdma_core_dev_info *cdev_info; + int num_vfs; + bool crc_enable; + bool req_tx_splitq; + bool req_rx_splitq; + + struct mutex vport_ctrl_lock; + struct mutex vector_lock; + struct mutex queue_lock; + struct mutex vc_buf_lock; + + struct idpf_ptp *ptp; +}; + +/** + * idpf_is_queue_model_split - check if queue model is split + * @q_model: queue model single or split + * + * Returns true if queue model is split else false + */ +static inline int idpf_is_queue_model_split(u16 q_model) +{ + return !IS_ENABLED(CONFIG_IDPF_SINGLEQ) || + q_model == VIRTCHNL2_QUEUE_MODEL_SPLIT; +} + +static inline bool idpf_xdp_enabled(const struct idpf_vport *vport) +{ + return vport->adapter && vport->xdp_prog; +} + +#define idpf_is_cap_ena(adapter, field, flag) \ + idpf_is_capability_ena(adapter, false, field, flag) +#define idpf_is_cap_ena_all(adapter, field, flag) \ + idpf_is_capability_ena(adapter, true, field, flag) + +bool idpf_is_capability_ena(struct idpf_adapter *adapter, bool all, + enum idpf_cap_field field, u64 flag); + +/** + * idpf_is_rdma_cap_ena - Determine if RDMA is supported + * @adapter: private data struct + * + * Return: true if RDMA capability is enabled, false otherwise + */ +static inline bool idpf_is_rdma_cap_ena(struct idpf_adapter *adapter) +{ + return idpf_is_cap_ena(adapter, IDPF_OTHER_CAPS, VIRTCHNL2_CAP_RDMA); +} + +#define IDPF_CAP_RSS (\ + VIRTCHNL2_FLOW_IPV4_TCP |\ + VIRTCHNL2_FLOW_IPV4_UDP |\ + VIRTCHNL2_FLOW_IPV4_SCTP |\ + VIRTCHNL2_FLOW_IPV4_OTHER |\ + VIRTCHNL2_FLOW_IPV6_TCP |\ + VIRTCHNL2_FLOW_IPV6_UDP |\ + VIRTCHNL2_FLOW_IPV6_SCTP |\ + VIRTCHNL2_FLOW_IPV6_OTHER) + +#define IDPF_CAP_RSC (\ + VIRTCHNL2_CAP_RSC_IPV4_TCP |\ + VIRTCHNL2_CAP_RSC_IPV6_TCP) + +#define IDPF_CAP_HSPLIT (\ + VIRTCHNL2_CAP_RX_HSPLIT_AT_L4V4 |\ + VIRTCHNL2_CAP_RX_HSPLIT_AT_L4V6) + +#define IDPF_CAP_TX_CSUM_L4V4 (\ + VIRTCHNL2_CAP_TX_CSUM_L4_IPV4_TCP |\ + VIRTCHNL2_CAP_TX_CSUM_L4_IPV4_UDP) + +#define IDPF_CAP_TX_CSUM_L4V6 (\ + VIRTCHNL2_CAP_TX_CSUM_L4_IPV6_TCP |\ + VIRTCHNL2_CAP_TX_CSUM_L4_IPV6_UDP) + +#define IDPF_CAP_RX_CSUM (\ + VIRTCHNL2_CAP_RX_CSUM_L3_IPV4 |\ + VIRTCHNL2_CAP_RX_CSUM_L4_IPV4_TCP |\ + VIRTCHNL2_CAP_RX_CSUM_L4_IPV4_UDP |\ + VIRTCHNL2_CAP_RX_CSUM_L4_IPV6_TCP |\ + VIRTCHNL2_CAP_RX_CSUM_L4_IPV6_UDP) + +#define IDPF_CAP_TX_SCTP_CSUM (\ + VIRTCHNL2_CAP_TX_CSUM_L4_IPV4_SCTP |\ + VIRTCHNL2_CAP_TX_CSUM_L4_IPV6_SCTP) + +#define IDPF_CAP_TUNNEL_TX_CSUM (\ + VIRTCHNL2_CAP_TX_CSUM_L3_SINGLE_TUNNEL |\ + VIRTCHNL2_CAP_TX_CSUM_L4_SINGLE_TUNNEL) + +/** + * idpf_get_reserved_vecs - Get reserved vectors + * @adapter: private data struct + */ +static inline u16 idpf_get_reserved_vecs(struct idpf_adapter *adapter) +{ + return le16_to_cpu(adapter->caps.num_allocated_vectors); +} + +/** + * idpf_get_reserved_rdma_vecs - Get reserved RDMA vectors + * @adapter: private data struct + * + * Return: number of vectors reserved for RDMA + */ +static inline u16 idpf_get_reserved_rdma_vecs(struct idpf_adapter *adapter) +{ + return le16_to_cpu(adapter->caps.num_rdma_allocated_vectors); +} + +/** + * idpf_get_default_vports - Get default number of vports + * @adapter: private data struct + */ +static inline u16 idpf_get_default_vports(struct idpf_adapter *adapter) +{ + return le16_to_cpu(adapter->caps.default_num_vports); +} + +/** + * idpf_get_max_vports - Get max number of vports + * @adapter: private data struct + */ +static inline u16 idpf_get_max_vports(struct idpf_adapter *adapter) +{ + return le16_to_cpu(adapter->caps.max_vports); +} + +/** + * idpf_get_max_tx_bufs - Get max scatter-gather buffers supported by the device + * @adapter: private data struct + */ +static inline unsigned int idpf_get_max_tx_bufs(struct idpf_adapter *adapter) +{ + return adapter->caps.max_sg_bufs_per_tx_pkt; +} + +/** + * idpf_get_min_tx_pkt_len - Get min packet length supported by the device + * @adapter: private data struct + */ +static inline u8 idpf_get_min_tx_pkt_len(struct idpf_adapter *adapter) +{ + u8 pkt_len = adapter->caps.min_sso_packet_len; + + return pkt_len ? pkt_len : IDPF_TX_MIN_PKT_LEN; +} + +/** + * idpf_get_mbx_reg_addr - Get BAR0 mailbox register address + * @adapter: private data struct + * @reg_offset: register offset value + * + * Return: BAR0 mailbox register address based on register offset. + */ +static inline void __iomem *idpf_get_mbx_reg_addr(struct idpf_adapter *adapter, + resource_size_t reg_offset) +{ + return adapter->hw.mbx.vaddr + reg_offset; +} + +/** + * idpf_get_rstat_reg_addr - Get BAR0 rstat register address + * @adapter: private data struct + * @reg_offset: register offset value + * + * Return: BAR0 rstat register address based on register offset. + */ +static inline void __iomem *idpf_get_rstat_reg_addr(struct idpf_adapter *adapter, + resource_size_t reg_offset) +{ + reg_offset -= adapter->dev_ops.static_reg_info[1].start; + + return adapter->hw.rstat.vaddr + reg_offset; +} + +/** + * idpf_get_reg_addr - Get BAR0 register address + * @adapter: private data struct + * @reg_offset: register offset value + * + * Based on the register offset, return the actual BAR0 register address + */ +static inline void __iomem *idpf_get_reg_addr(struct idpf_adapter *adapter, + resource_size_t reg_offset) +{ + struct idpf_hw *hw = &adapter->hw; + + for (int i = 0; i < hw->num_lan_regs; i++) { + struct idpf_mmio_reg *region = &hw->lan_regs[i]; + + if (reg_offset >= region->addr_start && + reg_offset < (region->addr_start + region->addr_len)) { + /* Convert the offset so that it is relative to the + * start of the region. Then add the base address of + * the region to get the final address. + */ + reg_offset -= region->addr_start; + + return region->vaddr + reg_offset; + } + } + + /* It's impossible to hit this case with offsets from the CP. But if we + * do for any other reason, the kernel will panic on that register + * access. Might as well do it here to make it clear what's happening. + */ + BUG(); + + return NULL; +} + +/** + * idpf_is_reset_detected - check if we were reset at some point + * @adapter: driver specific private structure + * + * Returns true if we are either in reset currently or were previously reset. + */ +static inline bool idpf_is_reset_detected(struct idpf_adapter *adapter) +{ + if (!adapter->hw.arq) + return true; + + return !(readl(idpf_get_mbx_reg_addr(adapter, adapter->hw.arq->reg.len)) & + adapter->hw.arq->reg.len_mask); +} + +/** + * idpf_is_reset_in_prog - check if reset is in progress + * @adapter: driver specific private structure + * + * Returns true if hard reset is in progress, false otherwise + */ +static inline bool idpf_is_reset_in_prog(struct idpf_adapter *adapter) +{ + return (test_bit(IDPF_HR_RESET_IN_PROG, adapter->flags) || + test_bit(IDPF_HR_FUNC_RESET, adapter->flags) || + test_bit(IDPF_HR_DRV_LOAD, adapter->flags)); +} + +/** + * idpf_netdev_to_vport - get a vport handle from a netdev + * @netdev: network interface device structure + */ +static inline struct idpf_vport *idpf_netdev_to_vport(struct net_device *netdev) +{ + struct idpf_netdev_priv *np = netdev_priv(netdev); + + return np->vport; +} + +/** + * idpf_netdev_to_adapter - Get adapter handle from a netdev + * @netdev: Network interface device structure + */ +static inline struct idpf_adapter *idpf_netdev_to_adapter(struct net_device *netdev) +{ + struct idpf_netdev_priv *np = netdev_priv(netdev); + + return np->adapter; +} + +/** + * idpf_is_feature_ena - Determine if a particular feature is enabled + * @vport: Vport to check + * @feature: Netdev flag to check + * + * Returns true or false if a particular feature is enabled. + */ +static inline bool idpf_is_feature_ena(const struct idpf_vport *vport, + netdev_features_t feature) +{ + return vport->netdev->features & feature; +} + +/** + * idpf_get_max_tx_hdr_size -- get the size of tx header + * @adapter: Driver specific private structure + */ +static inline u16 idpf_get_max_tx_hdr_size(struct idpf_adapter *adapter) +{ + return le16_to_cpu(adapter->caps.max_tx_hdr_size); +} + +/** + * idpf_vport_ctrl_lock - Acquire the vport control lock + * @netdev: Network interface device structure + * + * This lock should be used by non-datapath code to protect against vport + * destruction. + */ +static inline void idpf_vport_ctrl_lock(struct net_device *netdev) +{ + struct idpf_netdev_priv *np = netdev_priv(netdev); + + mutex_lock(&np->adapter->vport_ctrl_lock); +} + +/** + * idpf_vport_ctrl_unlock - Release the vport control lock + * @netdev: Network interface device structure + */ +static inline void idpf_vport_ctrl_unlock(struct net_device *netdev) +{ + struct idpf_netdev_priv *np = netdev_priv(netdev); + + mutex_unlock(&np->adapter->vport_ctrl_lock); +} + +static inline bool idpf_vport_ctrl_is_locked(struct net_device *netdev) +{ + struct idpf_netdev_priv *np = netdev_priv(netdev); + + return mutex_is_locked(&np->adapter->vport_ctrl_lock); +} + +void idpf_statistics_task(struct work_struct *work); +void idpf_init_task(struct work_struct *work); +void idpf_service_task(struct work_struct *work); +void idpf_mbx_task(struct work_struct *work); +void idpf_vc_event_task(struct work_struct *work); +void idpf_dev_ops_init(struct idpf_adapter *adapter); +void idpf_vf_dev_ops_init(struct idpf_adapter *adapter); +int idpf_intr_req(struct idpf_adapter *adapter); +void idpf_intr_rel(struct idpf_adapter *adapter); +u16 idpf_get_max_tx_hdr_size(struct idpf_adapter *adapter); +int idpf_initiate_soft_reset(struct idpf_vport *vport, + enum idpf_vport_reset_cause reset_cause); +void idpf_deinit_task(struct idpf_adapter *adapter); +int idpf_req_rel_vector_indexes(struct idpf_adapter *adapter, + u16 *q_vector_idxs, + struct idpf_vector_info *vec_info); +void idpf_set_ethtool_ops(struct net_device *netdev); +void idpf_vport_intr_write_itr(struct idpf_q_vector *q_vector, + u16 itr, bool tx); +int idpf_sriov_configure(struct pci_dev *pdev, int num_vfs); + +u8 idpf_vport_get_hsplit(const struct idpf_vport *vport); +bool idpf_vport_set_hsplit(const struct idpf_vport *vport, u8 val); +int idpf_idc_init(struct idpf_adapter *adapter); +int idpf_idc_init_aux_core_dev(struct idpf_adapter *adapter, + enum iidc_function_type ftype); +void idpf_idc_deinit_core_aux_device(struct iidc_rdma_core_dev_info *cdev_info); +void idpf_idc_deinit_vport_aux_device(struct iidc_rdma_vport_dev_info *vdev_info); +void idpf_idc_issue_reset_event(struct iidc_rdma_core_dev_info *cdev_info); +void idpf_idc_vdev_mtu_event(struct iidc_rdma_vport_dev_info *vdev_info, + enum iidc_rdma_event_type event_type); + +int idpf_add_del_fsteer_filters(struct idpf_adapter *adapter, + struct virtchnl2_flow_rule_add_del *rule, + enum virtchnl2_op opcode); +#endif /* !_IDPF_H_ */ |