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freebsd-skq/sys/dev/vnic/nic.h
zbb 8675c6ca60 Add HW RSS support to VNIC driver 
Based on v1.0 driver provided by Cavium under BSD license.
Support in-hardware RSS to distribute IP, UDP and TCP traffic
among available RX Queues and hence multiple CPUs.

Reviewed by:	wma
Obtained from:	Semihalf
Sponsored by:	Cavium
Differential Revision: https://reviews.freebsd.org/D6230
2016-05-11 13:22:13 +00:00

520 lines
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/*
* Copyright (C) 2015 Cavium Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*
*/
#ifndef NIC_H
#define NIC_H
/* PCI vendor ID */
#define PCI_VENDOR_ID_CAVIUM 0x177D
/* PCI device IDs */
#define PCI_DEVICE_ID_THUNDER_NIC_PF 0xA01E
#define PCI_DEVICE_ID_THUNDER_PASS1_NIC_VF 0x0011
#define PCI_DEVICE_ID_THUNDER_NIC_VF 0xA034
#define PCI_DEVICE_ID_THUNDER_BGX 0xA026
/* PCI BAR nos */
#define PCI_CFG_REG_BAR_NUM 0
#define PCI_MSIX_REG_BAR_NUM 4
/* PCI revision IDs */
#define PCI_REVID_PASS2 8
/* NIC SRIOV VF count */
#define MAX_NUM_VFS_SUPPORTED 128
#define DEFAULT_NUM_VF_ENABLED 8
#define NIC_TNS_BYPASS_MODE 0
#define NIC_TNS_MODE 1
/* NIC priv flags */
#define NIC_SRIOV_ENABLED (1 << 0)
#define NIC_TNS_ENABLED (1 << 1)
/* ARM64TODO */
#if 0
/* VNIC HW optimiation features */
#define VNIC_RSS_SUPPORT
#define VNIC_MULTI_QSET_SUPPORT
#endif
/* Min/Max packet size */
#define NIC_HW_MIN_FRS 64
#define NIC_HW_MAX_FRS 9200 /* 9216 max packet including FCS */
/* Max pkinds */
#define NIC_MAX_PKIND 16
/*
* Rx Channels */
/* Receive channel configuration in TNS bypass mode
* Below is configuration in TNS bypass mode
* BGX0-LMAC0-CHAN0 - VNIC CHAN0
* BGX0-LMAC1-CHAN0 - VNIC CHAN16
* ...
* BGX1-LMAC0-CHAN0 - VNIC CHAN128
* ...
* BGX1-LMAC3-CHAN0 - VNIC CHAN174
*/
#define NIC_INTF_COUNT 2 /* Interfaces btw VNIC and TNS/BGX */
#define NIC_CHANS_PER_INF 128
#define NIC_MAX_CHANS (NIC_INTF_COUNT * NIC_CHANS_PER_INF)
#define NIC_CPI_COUNT 2048 /* No of channel parse indices */
/* TNS bypass mode: 1-1 mapping between VNIC and BGX:LMAC */
#define NIC_MAX_BGX MAX_BGX_PER_CN88XX
#define NIC_CPI_PER_BGX (NIC_CPI_COUNT / NIC_MAX_BGX)
#define NIC_MAX_CPI_PER_LMAC 64 /* Max when CPI_ALG is IP diffserv */
#define NIC_RSSI_PER_BGX (NIC_RSSI_COUNT / NIC_MAX_BGX)
/* Tx scheduling */
#define NIC_MAX_TL4 1024
#define NIC_MAX_TL4_SHAPERS 256 /* 1 shaper for 4 TL4s */
#define NIC_MAX_TL3 256
#define NIC_MAX_TL3_SHAPERS 64 /* 1 shaper for 4 TL3s */
#define NIC_MAX_TL2 64
#define NIC_MAX_TL2_SHAPERS 2 /* 1 shaper for 32 TL2s */
#define NIC_MAX_TL1 2
/* TNS bypass mode */
#define NIC_TL2_PER_BGX 32
#define NIC_TL4_PER_BGX (NIC_MAX_TL4 / NIC_MAX_BGX)
#define NIC_TL4_PER_LMAC (NIC_MAX_TL4 / NIC_CHANS_PER_INF)
/* NIC VF Interrupts */
#define NICVF_INTR_CQ 0
#define NICVF_INTR_SQ 1
#define NICVF_INTR_RBDR 2
#define NICVF_INTR_PKT_DROP 3
#define NICVF_INTR_TCP_TIMER 4
#define NICVF_INTR_MBOX 5
#define NICVF_INTR_QS_ERR 6
#define NICVF_INTR_CQ_SHIFT 0
#define NICVF_INTR_SQ_SHIFT 8
#define NICVF_INTR_RBDR_SHIFT 16
#define NICVF_INTR_PKT_DROP_SHIFT 20
#define NICVF_INTR_TCP_TIMER_SHIFT 21
#define NICVF_INTR_MBOX_SHIFT 22
#define NICVF_INTR_QS_ERR_SHIFT 23
#define NICVF_INTR_CQ_MASK (0xFF << NICVF_INTR_CQ_SHIFT)
#define NICVF_INTR_SQ_MASK (0xFF << NICVF_INTR_SQ_SHIFT)
#define NICVF_INTR_RBDR_MASK (0x03 << NICVF_INTR_RBDR_SHIFT)
#define NICVF_INTR_PKT_DROP_MASK (1 << NICVF_INTR_PKT_DROP_SHIFT)
#define NICVF_INTR_TCP_TIMER_MASK (1 << NICVF_INTR_TCP_TIMER_SHIFT)
#define NICVF_INTR_MBOX_MASK (1 << NICVF_INTR_MBOX_SHIFT)
#define NICVF_INTR_QS_ERR_MASK (1 << NICVF_INTR_QS_ERR_SHIFT)
/* MSI-X interrupts */
#define NIC_PF_MSIX_VECTORS 10
#define NIC_VF_MSIX_VECTORS 20
#define NIC_PF_INTR_ID_ECC0_SBE 0
#define NIC_PF_INTR_ID_ECC0_DBE 1
#define NIC_PF_INTR_ID_ECC1_SBE 2
#define NIC_PF_INTR_ID_ECC1_DBE 3
#define NIC_PF_INTR_ID_ECC2_SBE 4
#define NIC_PF_INTR_ID_ECC2_DBE 5
#define NIC_PF_INTR_ID_ECC3_SBE 6
#define NIC_PF_INTR_ID_ECC3_DBE 7
#define NIC_PF_INTR_ID_MBOX0 8
#define NIC_PF_INTR_ID_MBOX1 9
struct msix_entry {
struct resource * irq_res;
void * handle;
};
/*
* Global timer for CQ timer thresh interrupts
* Calculated for SCLK of 700Mhz
* value written should be a 1/16th of what is expected
*
* 1 tick per 0.05usec = value of 2.2
* This 10% would be covered in CQ timer thresh value
*/
#define NICPF_CLK_PER_INT_TICK 2
/*
* Time to wait before we decide that a SQ is stuck.
*
* Since both pkt rx and tx notifications are done with same CQ,
* when packets are being received at very high rate (eg: L2 forwarding)
* then freeing transmitted skbs will be delayed and watchdog
* will kick in, resetting interface. Hence keeping this value high.
*/
#define NICVF_TX_TIMEOUT (50 * HZ)
#define NIC_RSSI_COUNT 4096 /* Total no of RSS indices */
#define NIC_MAX_RSS_HASH_BITS 8
#define NIC_MAX_RSS_IDR_TBL_SIZE (1 << NIC_MAX_RSS_HASH_BITS)
#define RSS_HASH_KEY_SIZE 5 /* 320 bit key */
struct nicvf_rss_info {
boolean_t enable;
#define RSS_L2_EXTENDED_HASH_ENA (1UL << 0)
#define RSS_IP_HASH_ENA (1UL << 1)
#define RSS_TCP_HASH_ENA (1UL << 2)
#define RSS_TCP_SYN_DIS (1UL << 3)
#define RSS_UDP_HASH_ENA (1UL << 4)
#define RSS_L4_EXTENDED_HASH_ENA (1UL << 5)
#define RSS_ROCE_ENA (1UL << 6)
#define RSS_L3_BI_DIRECTION_ENA (1UL << 7)
#define RSS_L4_BI_DIRECTION_ENA (1UL << 8)
uint64_t cfg;
uint8_t hash_bits;
uint16_t rss_size;
uint8_t ind_tbl[NIC_MAX_RSS_IDR_TBL_SIZE];
uint64_t key[RSS_HASH_KEY_SIZE];
};
enum rx_stats_reg_offset {
RX_OCTS = 0x0,
RX_UCAST = 0x1,
RX_BCAST = 0x2,
RX_MCAST = 0x3,
RX_RED = 0x4,
RX_RED_OCTS = 0x5,
RX_ORUN = 0x6,
RX_ORUN_OCTS = 0x7,
RX_FCS = 0x8,
RX_L2ERR = 0x9,
RX_DRP_BCAST = 0xa,
RX_DRP_MCAST = 0xb,
RX_DRP_L3BCAST = 0xc,
RX_DRP_L3MCAST = 0xd,
RX_STATS_ENUM_LAST,
};
enum tx_stats_reg_offset {
TX_OCTS = 0x0,
TX_UCAST = 0x1,
TX_BCAST = 0x2,
TX_MCAST = 0x3,
TX_DROP = 0x4,
TX_STATS_ENUM_LAST,
};
struct nicvf_hw_stats {
uint64_t rx_bytes;
uint64_t rx_ucast_frames;
uint64_t rx_bcast_frames;
uint64_t rx_mcast_frames;
uint64_t rx_fcs_errors;
uint64_t rx_l2_errors;
uint64_t rx_drop_red;
uint64_t rx_drop_red_bytes;
uint64_t rx_drop_overrun;
uint64_t rx_drop_overrun_bytes;
uint64_t rx_drop_bcast;
uint64_t rx_drop_mcast;
uint64_t rx_drop_l3_bcast;
uint64_t rx_drop_l3_mcast;
uint64_t rx_bgx_truncated_pkts;
uint64_t rx_jabber_errs;
uint64_t rx_fcs_errs;
uint64_t rx_bgx_errs;
uint64_t rx_prel2_errs;
uint64_t rx_l2_hdr_malformed;
uint64_t rx_oversize;
uint64_t rx_undersize;
uint64_t rx_l2_len_mismatch;
uint64_t rx_l2_pclp;
uint64_t rx_ip_ver_errs;
uint64_t rx_ip_csum_errs;
uint64_t rx_ip_hdr_malformed;
uint64_t rx_ip_payload_malformed;
uint64_t rx_ip_ttl_errs;
uint64_t rx_l3_pclp;
uint64_t rx_l4_malformed;
uint64_t rx_l4_csum_errs;
uint64_t rx_udp_len_errs;
uint64_t rx_l4_port_errs;
uint64_t rx_tcp_flag_errs;
uint64_t rx_tcp_offset_errs;
uint64_t rx_l4_pclp;
uint64_t rx_truncated_pkts;
uint64_t tx_bytes_ok;
uint64_t tx_ucast_frames_ok;
uint64_t tx_bcast_frames_ok;
uint64_t tx_mcast_frames_ok;
uint64_t tx_drops;
};
struct nicvf_drv_stats {
/* Rx */
uint64_t rx_frames_ok;
uint64_t rx_frames_64;
uint64_t rx_frames_127;
uint64_t rx_frames_255;
uint64_t rx_frames_511;
uint64_t rx_frames_1023;
uint64_t rx_frames_1518;
uint64_t rx_frames_jumbo;
uint64_t rx_drops;
/* Tx */
uint64_t tx_frames_ok;
uint64_t tx_drops;
uint64_t tx_tso;
uint64_t txq_stop;
uint64_t txq_wake;
};
struct nicvf {
struct nicvf *pnicvf;
device_t dev;
struct ifnet * ifp;
struct sx core_sx;
struct ifmedia if_media;
uint32_t if_flags;
uint8_t hwaddr[ETHER_ADDR_LEN];
uint8_t vf_id;
uint8_t node;
boolean_t tns_mode:1;
boolean_t sqs_mode:1;
bool loopback_supported:1;
struct nicvf_rss_info rss_info;
uint16_t mtu;
struct queue_set *qs;
uint8_t rx_queues;
uint8_t tx_queues;
uint8_t max_queues;
struct resource *reg_base;
boolean_t link_up;
boolean_t hw_tso;
uint8_t duplex;
uint32_t speed;
uint8_t cpi_alg;
/* Interrupt coalescing settings */
uint32_t cq_coalesce_usecs;
uint32_t msg_enable;
struct nicvf_hw_stats hw_stats;
struct nicvf_drv_stats drv_stats;
struct bgx_stats bgx_stats;
/* Interface statistics */
struct callout stats_callout;
struct mtx stats_mtx;
/* MSI-X */
boolean_t msix_enabled;
uint8_t num_vec;
struct msix_entry msix_entries[NIC_VF_MSIX_VECTORS];
struct resource * msix_table_res;
char irq_name[NIC_VF_MSIX_VECTORS][20];
boolean_t irq_allocated[NIC_VF_MSIX_VECTORS];
/* VF <-> PF mailbox communication */
boolean_t pf_acked;
boolean_t pf_nacked;
} __aligned(CACHE_LINE_SIZE);
/*
* PF <--> VF Mailbox communication
* Eight 64bit registers are shared between PF and VF.
* Separate set for each VF.
* Writing '1' into last register mbx7 means end of message.
*/
/* PF <--> VF mailbox communication */
#define NIC_PF_VF_MAILBOX_SIZE 2
#define NIC_MBOX_MSG_TIMEOUT 2000 /* ms */
/* Mailbox message types */
#define NIC_MBOX_MSG_READY 0x01 /* Is PF ready to rcv msgs */
#define NIC_MBOX_MSG_ACK 0x02 /* ACK the message received */
#define NIC_MBOX_MSG_NACK 0x03 /* NACK the message received */
#define NIC_MBOX_MSG_QS_CFG 0x04 /* Configure Qset */
#define NIC_MBOX_MSG_RQ_CFG 0x05 /* Configure receive queue */
#define NIC_MBOX_MSG_SQ_CFG 0x06 /* Configure Send queue */
#define NIC_MBOX_MSG_RQ_DROP_CFG 0x07 /* Configure receive queue */
#define NIC_MBOX_MSG_SET_MAC 0x08 /* Add MAC ID to DMAC filter */
#define NIC_MBOX_MSG_SET_MAX_FRS 0x09 /* Set max frame size */
#define NIC_MBOX_MSG_CPI_CFG 0x0A /* Config CPI, RSSI */
#define NIC_MBOX_MSG_RSS_SIZE 0x0B /* Get RSS indir_tbl size */
#define NIC_MBOX_MSG_RSS_CFG 0x0C /* Config RSS table */
#define NIC_MBOX_MSG_RSS_CFG_CONT 0x0D /* RSS config continuation */
#define NIC_MBOX_MSG_RQ_BP_CFG 0x0E /* RQ backpressure config */
#define NIC_MBOX_MSG_RQ_SW_SYNC 0x0F /* Flush inflight pkts to RQ */
#define NIC_MBOX_MSG_BGX_STATS 0x10 /* Get stats from BGX */
#define NIC_MBOX_MSG_BGX_LINK_CHANGE 0x11 /* BGX:LMAC link status */
#define NIC_MBOX_MSG_ALLOC_SQS 0x12 /* Allocate secondary Qset */
#define NIC_MBOX_MSG_NICVF_PTR 0x13 /* Send nicvf ptr to PF */
#define NIC_MBOX_MSG_PNICVF_PTR 0x14 /* Get primary qset nicvf ptr */
#define NIC_MBOX_MSG_SNICVF_PTR 0x15 /* Send sqet nicvf ptr to PVF */
#define NIC_MBOX_MSG_LOOPBACK 0x16 /* Set interface in loopback */
#define NIC_MBOX_MSG_CFG_DONE 0xF0 /* VF configuration done */
#define NIC_MBOX_MSG_SHUTDOWN 0xF1 /* VF is being shutdown */
struct nic_cfg_msg {
uint8_t msg;
uint8_t vf_id;
uint8_t node_id;
boolean_t tns_mode:1;
boolean_t sqs_mode:1;
boolean_t loopback_supported:1;
uint8_t mac_addr[ETHER_ADDR_LEN];
};
/* Qset configuration */
struct qs_cfg_msg {
uint8_t msg;
uint8_t num;
uint8_t sqs_count;
uint64_t cfg;
};
/* Receive queue configuration */
struct rq_cfg_msg {
uint8_t msg;
uint8_t qs_num;
uint8_t rq_num;
uint64_t cfg;
};
/* Send queue configuration */
struct sq_cfg_msg {
uint8_t msg;
uint8_t qs_num;
uint8_t sq_num;
boolean_t sqs_mode;
uint64_t cfg;
};
/* Set VF's MAC address */
struct set_mac_msg {
uint8_t msg;
uint8_t vf_id;
uint8_t mac_addr[ETHER_ADDR_LEN];
};
/* Set Maximum frame size */
struct set_frs_msg {
uint8_t msg;
uint8_t vf_id;
uint16_t max_frs;
};
/* Set CPI algorithm type */
struct cpi_cfg_msg {
uint8_t msg;
uint8_t vf_id;
uint8_t rq_cnt;
uint8_t cpi_alg;
};
/* Get RSS table size */
struct rss_sz_msg {
uint8_t msg;
uint8_t vf_id;
uint16_t ind_tbl_size;
};
/* Set RSS configuration */
struct rss_cfg_msg {
uint8_t msg;
uint8_t vf_id;
uint8_t hash_bits;
uint8_t tbl_len;
uint8_t tbl_offset;
#define RSS_IND_TBL_LEN_PER_MBX_MSG 8
uint8_t ind_tbl[RSS_IND_TBL_LEN_PER_MBX_MSG];
};
struct bgx_stats_msg {
uint8_t msg;
uint8_t vf_id;
uint8_t rx;
uint8_t idx;
uint64_t stats;
};
/* Physical interface link status */
struct bgx_link_status {
uint8_t msg;
uint8_t link_up;
uint8_t duplex;
uint32_t speed;
};
/* Set interface in loopback mode */
struct set_loopback {
uint8_t msg;
uint8_t vf_id;
boolean_t enable;
};
/* 128 bit shared memory between PF and each VF */
union nic_mbx {
struct {
uint8_t msg;
} msg;
struct nic_cfg_msg nic_cfg;
struct qs_cfg_msg qs;
struct rq_cfg_msg rq;
struct sq_cfg_msg sq;
struct set_mac_msg mac;
struct set_frs_msg frs;
struct cpi_cfg_msg cpi_cfg;
struct rss_sz_msg rss_size;
struct rss_cfg_msg rss_cfg;
struct bgx_stats_msg bgx_stats;
struct bgx_link_status link_status;
struct set_loopback lbk;
};
#define NIC_NODE_ID_MASK 0x03
#define NIC_NODE_ID_SHIFT 44
static __inline int
nic_get_node_id(struct resource *res)
{
pci_addr_t addr;
addr = rman_get_start(res);
return ((addr >> NIC_NODE_ID_SHIFT) & NIC_NODE_ID_MASK);
}
static __inline boolean_t
pass1_silicon(device_t dev)
{
/* Check if the chip revision is < Pass2 */
return (pci_get_revid(dev) < PCI_REVID_PASS2);
}
int nicvf_send_msg_to_pf(struct nicvf *vf, union nic_mbx *mbx);
#endif /* NIC_H */
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