407 lines
10 KiB
C
407 lines
10 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright 2008-2017 Cisco Systems, Inc. All rights reserved.
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* Copyright 2007 Nuova Systems, Inc. All rights reserved.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD: $");
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#ifndef _ENIC_H
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#define _ENIC_H
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <sys/sysctl.h>
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#include <sys/taskqueue.h>
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#include <machine/bus.h>
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#include <net/ethernet.h>
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#include <net/if.h>
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#include <net/if_var.h>
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#include <net/iflib.h>
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#define u8 uint8_t
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#define u16 uint16_t
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#define u32 uint32_t
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#define u64 uint64_t
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struct enic_bar_info {
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struct resource *res;
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bus_space_tag_t tag;
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bus_space_handle_t handle;
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bus_size_t size;
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int rid;
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int offset;
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};
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#define ENIC_BUS_WRITE_8(res, index, value) \
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bus_space_write_8(res->bar.tag, res->bar.handle, \
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res->bar.offset + (index), value)
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#define ENIC_BUS_WRITE_4(res, index, value) \
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bus_space_write_4(res->bar.tag, res->bar.handle, \
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res->bar.offset + (index), value)
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#define ENIC_BUS_WRITE_REGION_4(res, index, values, count) \
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bus_space_write_region_4(res->bar.tag, res->bar.handle, \
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res->bar.offset + (index), values, count);
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#define ENIC_BUS_READ_8(res, index) \
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bus_space_read_8(res->bar.tag, res->bar.handle, \
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res->bar.offset + (index))
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#define ENIC_BUS_READ_4(res, index) \
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bus_space_read_4(res->bar.tag, res->bar.handle, \
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res->bar.offset + (index))
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#define ENIC_BUS_READ_REGION_4(res, type, index, values, count) \
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bus_space_read_region_4(res->type.tag, res->type.handle, \
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res->type.offset + (index), values, count);
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struct vnic_res {
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unsigned int count;
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struct enic_bar_info bar;
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};
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#include "vnic_enet.h"
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#include "vnic_dev.h"
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#include "vnic_wq.h"
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#include "vnic_rq.h"
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#include "vnic_cq.h"
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#include "vnic_intr.h"
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#include "vnic_stats.h"
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#include "vnic_nic.h"
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#include "vnic_rss.h"
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#include "enic_res.h"
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#include "cq_enet_desc.h"
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#define ENIC_LOCK(_softc) mtx_lock(&(_softc)->enic_lock)
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#define ENIC_UNLOCK(_softc) mtx_unlock(&(_softc)->enic_lock)
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#define DRV_NAME "enic"
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#define DRV_DESCRIPTION "Cisco VIC Ethernet NIC"
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#define DRV_COPYRIGHT "Copyright 2008-2015 Cisco Systems, Inc"
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#define ENIC_MAX_MAC_ADDR 64
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#define VLAN_ETH_HLEN 18
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#define ENICPMD_SETTING(enic, f) ((enic->config.flags & VENETF_##f) ? 1 : 0)
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#define ENICPMD_BDF_LENGTH 13 /* 0000:00:00.0'\0' */
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#define ENIC_CALC_IP_CKSUM 1
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#define ENIC_CALC_TCP_UDP_CKSUM 2
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#define ENIC_MAX_MTU 9000
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#define ENIC_PAGE_SIZE 4096
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#define PAGE_ROUND_UP(x) \
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((((unsigned long)(x)) + ENIC_PAGE_SIZE-1) & (~(ENIC_PAGE_SIZE-1)))
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/* must be >= VNIC_COUNTER_DMA_MIN_PERIOD */
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#define VNIC_FLOW_COUNTER_UPDATE_MSECS 500
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/* PCI IDs */
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#define CISCO_VENDOR_ID 0x1137
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#define PCI_DEVICE_ID_CISCO_VIC_ENET 0x0043 /* ethernet vnic */
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#define PCI_DEVICE_ID_CISCO_VIC_ENET_VF 0x0071 /* enet SRIOV VF */
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/* Special Filter id for non-specific packet flagging. Don't change value */
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#define ENIC_MAGIC_FILTER_ID 0xffff
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#define ENICPMD_FDIR_MAX 64
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/* HW default VXLAN port */
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#define ENIC_DEFAULT_VXLAN_PORT 4789
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/*
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* Interrupt 0: LSC and errors
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* Interrupt 1: rx queue 0
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* Interrupt 2: rx queue 1
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* ...
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*/
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#define ENICPMD_LSC_INTR_OFFSET 0
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#define ENICPMD_RXQ_INTR_OFFSET 1
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#include "vnic_devcmd.h"
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enum vnic_proxy_type {
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PROXY_NONE,
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PROXY_BY_BDF,
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PROXY_BY_INDEX,
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};
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struct vnic_intr_coal_timer_info {
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u32 mul;
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u32 div;
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u32 max_usec;
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};
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struct enic_softc;
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struct vnic_dev {
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void *priv;
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struct rte_pci_device *pdev;
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struct vnic_res res[RES_TYPE_MAX];
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enum vnic_dev_intr_mode intr_mode;
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struct vnic_res __iomem *devcmd;
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struct vnic_devcmd_notify *notify;
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struct vnic_devcmd_notify notify_copy;
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bus_addr_t notify_pa;
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struct iflib_dma_info notify_res;
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u32 notify_sz;
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struct iflib_dma_info linkstatus_res;
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struct vnic_stats *stats;
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struct iflib_dma_info stats_res;
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struct vnic_devcmd_fw_info *fw_info;
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struct iflib_dma_info fw_info_res;
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enum vnic_proxy_type proxy;
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u32 proxy_index;
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u64 args[VNIC_DEVCMD_NARGS];
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int in_reset;
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struct vnic_intr_coal_timer_info intr_coal_timer_info;
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void *(*alloc_consistent)(void *priv, size_t size,
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bus_addr_t *dma_handle, struct iflib_dma_info *res, u8 *name);
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void (*free_consistent)(void *priv, size_t size, void *vaddr,
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bus_addr_t dma_handle, struct iflib_dma_info *res);
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struct vnic_counter_counts *flow_counters;
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struct iflib_dma_info flow_counters_res;
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u8 flow_counters_dma_active;
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struct enic_softc *softc;
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};
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struct enic_soft_stats {
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uint64_t rx_nombuf;
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uint64_t rx_packet_errors;
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uint64_t tx_oversized;
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};
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struct intr_queue {
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struct if_irq intr_irq;
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struct resource *res;
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int rid;
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struct enic_softc *softc;
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};
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struct enic {
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struct enic *next;
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struct rte_pci_device *pdev;
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struct vnic_enet_config config;
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struct vnic_dev_bar bar0;
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struct vnic_dev *vdev;
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/*
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* mbuf_initializer contains 64 bits of mbuf rearm_data, used by
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* the avx2 handler at this time.
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*/
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uint64_t mbuf_initializer;
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unsigned int port_id;
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bool overlay_offload;
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char bdf_name[ENICPMD_BDF_LENGTH];
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int dev_fd;
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int iommu_group_fd;
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int iommu_groupid;
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int eventfd;
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uint8_t mac_addr[ETH_ALEN];
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pthread_t err_intr_thread;
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u8 ig_vlan_strip_en;
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int link_status;
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u8 hw_ip_checksum;
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u16 max_mtu;
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u8 adv_filters;
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u32 flow_filter_mode;
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u8 filter_actions; /* HW supported actions */
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bool vxlan;
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bool disable_overlay; /* devargs disable_overlay=1 */
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uint8_t enable_avx2_rx; /* devargs enable-avx2-rx=1 */
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bool nic_cfg_chk; /* NIC_CFG_CHK available */
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bool udp_rss_weak; /* Bodega style UDP RSS */
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uint8_t ig_vlan_rewrite_mode; /* devargs ig-vlan-rewrite */
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uint16_t vxlan_port; /* current vxlan port pushed to NIC */
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unsigned int flags;
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unsigned int priv_flags;
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/* work queue (len = conf_wq_count) */
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struct vnic_wq *wq;
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unsigned int wq_count; /* equals eth_dev nb_tx_queues */
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/* receive queue (len = conf_rq_count) */
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struct vnic_rq *rq;
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unsigned int rq_count; /* equals eth_dev nb_rx_queues */
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/* completion queue (len = conf_cq_count) */
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struct vnic_cq *cq;
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unsigned int cq_count; /* equals rq_count + wq_count */
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/* interrupt vectors (len = conf_intr_count) */
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struct vnic_intr *intr;
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struct intr_queue *intr_queues;;
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unsigned int intr_count; /* equals enabled interrupts (lsc + rxqs) */
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/* software counters */
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struct enic_soft_stats soft_stats;
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/* configured resources on vic */
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unsigned int conf_rq_count;
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unsigned int conf_wq_count;
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unsigned int conf_cq_count;
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unsigned int conf_intr_count;
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/* linked list storing memory allocations */
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LIST_HEAD(enic_memzone_list, enic_memzone_entry) memzone_list;
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LIST_HEAD(enic_flows, rte_flow) flows;
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int max_flow_counter;
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/* RSS */
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uint16_t reta_size;
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uint8_t hash_key_size;
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uint64_t flow_type_rss_offloads; /* 0 indicates RSS not supported */
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/*
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* Keep a copy of current RSS config for queries, as we cannot retrieve
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* it from the NIC.
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*/
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uint8_t rss_hash_type; /* NIC_CFG_RSS_HASH_TYPE flags */
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uint8_t rss_enable;
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uint64_t rss_hf; /* ETH_RSS flags */
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union vnic_rss_key rss_key;
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union vnic_rss_cpu rss_cpu;
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uint64_t rx_offload_capa; /* DEV_RX_OFFLOAD flags */
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uint64_t tx_offload_capa; /* DEV_TX_OFFLOAD flags */
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uint64_t tx_queue_offload_capa; /* DEV_TX_OFFLOAD flags */
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uint64_t tx_offload_mask; /* PKT_TX flags accepted */
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struct enic_softc *softc;
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int port_mtu;
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};
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struct enic_softc {
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device_t dev;
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if_ctx_t ctx;
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if_softc_ctx_t scctx;
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if_shared_ctx_t sctx;
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struct ifmedia *media;
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if_t ifp;
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struct mtx enic_lock;
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struct enic_bar_info mem;
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struct enic_bar_info io;
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struct vnic_dev vdev;
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struct enic enic;
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int ntxqsets;
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int nrxqsets;
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struct if_irq enic_event_intr_irq;
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struct if_irq enic_err_intr_irq;
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uint8_t lladdr[ETHER_ADDR_LEN];
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int link_active;
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int stopped;
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uint8_t mac_addr[ETHER_ADDR_LEN];
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int directed;
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int multicast;
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int broadcast;
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int promisc;
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int allmulti;
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u_int mc_count;
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uint8_t *mta;
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};
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/* Per-instance private data structure */
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static inline unsigned int enic_vnic_rq_count(struct enic *enic)
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{
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return enic->rq_count;
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}
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static inline unsigned int enic_cq_rq(struct enic *enic, unsigned int rq)
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{
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return rq;
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}
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static inline unsigned int enic_cq_wq(struct enic *enic, unsigned int wq)
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{
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return enic->rq_count + wq;
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}
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static inline uint32_t
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enic_ring_add(uint32_t n_descriptors, uint32_t i0, uint32_t i1)
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{
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uint32_t d = i0 + i1;
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d -= (d >= n_descriptors) ? n_descriptors : 0;
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return d;
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}
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static inline uint32_t
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enic_ring_sub(uint32_t n_descriptors, uint32_t i0, uint32_t i1)
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{
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int32_t d = i1 - i0;
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return (uint32_t)((d < 0) ? ((int32_t)n_descriptors + d) : d);
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}
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static inline uint32_t
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enic_ring_incr(uint32_t n_descriptors, uint32_t idx)
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{
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idx++;
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if (unlikely(idx == n_descriptors))
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idx = 0;
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return idx;
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}
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void enic_free_wq(void *txq);
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int enic_alloc_intr_resources(struct enic *enic);
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int enic_setup_finish(struct enic *enic);
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int enic_alloc_wq(struct enic *enic, uint16_t queue_idx,
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unsigned int socket_id, uint16_t nb_desc);
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void enic_start_wq(struct enic *enic, uint16_t queue_idx);
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int enic_stop_wq(struct enic *enic, uint16_t queue_idx);
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void enic_start_rq(struct enic *enic, uint16_t queue_idx);
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void enic_free_rq(void *rxq);
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int enic_set_vnic_res(struct enic *enic);
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int enic_init_rss_nic_cfg(struct enic *enic);
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int enic_set_rss_reta(struct enic *enic, union vnic_rss_cpu *rss_cpu);
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int enic_set_vlan_strip(struct enic *enic);
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int enic_enable(struct enic *enic);
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int enic_disable(struct enic *enic);
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void enic_remove(struct enic *enic);
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int enic_get_link_status(struct enic *enic);
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void enic_dev_stats_clear(struct enic *enic);
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void enic_add_packet_filter(struct enic *enic);
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int enic_set_mac_address(struct enic *enic, uint8_t *mac_addr);
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int enic_del_mac_address(struct enic *enic, int mac_index);
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unsigned int enic_cleanup_wq(struct enic *enic, struct vnic_wq *wq);
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void enic_post_wq_index(struct vnic_wq *wq);
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int enic_probe(struct enic *enic);
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int enic_clsf_init(struct enic *enic);
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void enic_clsf_destroy(struct enic *enic);
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int enic_set_mtu(struct enic *enic, uint16_t new_mtu);
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int enic_link_update(struct enic *enic);
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bool enic_use_vector_rx_handler(struct enic *enic);
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void enic_fdir_info(struct enic *enic);
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void enic_prep_wq_for_simple_tx(struct enic *, uint16_t);
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struct enic_ring {
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uint64_t paddr;
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caddr_t vaddr;
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struct enic_softc *softc;
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uint32_t ring_size; /* Must be a power of two */
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uint16_t id; /* Logical ID */
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uint16_t phys_id;
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};
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struct enic_cp_ring {
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struct enic_ring ring;
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struct if_irq irq;
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uint32_t cons;
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bool v_bit; /* Value of valid bit */
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struct ctx_hw_stats *stats;
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uint32_t stats_ctx_id;
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uint32_t last_idx; /* Used by RX rings only
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* set to the last read pidx
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*/
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};
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#endif /* _ENIC_H_ */
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