/*- * BSD LICENSE * * Copyright (c) 2015-2017 Amazon.com, Inc. or its affiliates. * 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 COPYRIGHT HOLDERS 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 COPYRIGHT * OWNER 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 ENA_H #define ENA_H #include #include "ena-com/ena_com.h" #include "ena-com/ena_eth_com.h" #define DRV_MODULE_VER_MAJOR 0 #define DRV_MODULE_VER_MINOR 8 #define DRV_MODULE_VER_SUBMINOR 4 #define DRV_MODULE_NAME "ena" #ifndef DRV_MODULE_VERSION #define DRV_MODULE_VERSION \ __XSTRING(DRV_MODULE_VER_MAJOR) "." \ __XSTRING(DRV_MODULE_VER_MINOR) "." \ __XSTRING(DRV_MODULE_VER_SUBMINOR) #endif #define DEVICE_NAME "Elastic Network Adapter (ENA)" #define DEVICE_DESC "ENA adapter" /* Calculate DMA mask - width for ena cannot exceed 48, so it is safe */ #define ENA_DMA_BIT_MASK(x) ((1ULL << (x)) - 1ULL) /* 1 for AENQ + ADMIN */ #define ENA_ADMIN_MSIX_VEC 1 #define ENA_MAX_MSIX_VEC(io_queues) (ENA_ADMIN_MSIX_VEC + (io_queues)) #define ENA_REG_BAR 0 #define ENA_MEM_BAR 2 #define ENA_BUS_DMA_SEGS 32 #define ENA_DEFAULT_BUF_RING_SIZE 4096 #define ENA_DEFAULT_RING_SIZE 1024 #define ENA_RX_REFILL_THRESH_DIVIDER 8 #define ENA_IRQNAME_SIZE 40 #define ENA_PKT_MAX_BUFS 19 #define ENA_RX_RSS_TABLE_LOG_SIZE 7 #define ENA_RX_RSS_TABLE_SIZE (1 << ENA_RX_RSS_TABLE_LOG_SIZE) #define ENA_HASH_KEY_SIZE 40 #define ENA_MAX_FRAME_LEN 10000 #define ENA_MIN_FRAME_LEN 60 #define ENA_TX_RESUME_THRESH (ENA_PKT_MAX_BUFS + 2) #define DB_THRESHOLD 64 #define TX_COMMIT 32 /* * TX budget for cleaning. It should be half of the RX budget to reduce amount * of TCP retransmissions. */ #define TX_BUDGET 128 /* RX cleanup budget. -1 stands for infinity. */ #define RX_BUDGET 256 /* * How many times we can repeat cleanup in the io irq handling routine if the * RX or TX budget was depleted. */ #define CLEAN_BUDGET 8 #define RX_IRQ_INTERVAL 20 #define TX_IRQ_INTERVAL 50 #define ENA_MIN_MTU 128 #define ENA_TSO_MAXSIZE 65536 #define ENA_MMIO_DISABLE_REG_READ BIT(0) #define ENA_TX_RING_IDX_NEXT(idx, ring_size) (((idx) + 1) & ((ring_size) - 1)) #define ENA_RX_RING_IDX_NEXT(idx, ring_size) (((idx) + 1) & ((ring_size) - 1)) #define ENA_IO_TXQ_IDX(q) (2 * (q)) #define ENA_IO_RXQ_IDX(q) (2 * (q) + 1) #define ENA_MGMNT_IRQ_IDX 0 #define ENA_IO_IRQ_FIRST_IDX 1 #define ENA_IO_IRQ_IDX(q) (ENA_IO_IRQ_FIRST_IDX + (q)) #define ENA_MAX_NO_INTERRUPT_ITERATIONS 3 /* * ENA device should send keep alive msg every 1 sec. * We wait for 6 sec just to be on the safe side. */ #define DEFAULT_KEEP_ALIVE_TO (SBT_1S * 6) /* Time in jiffies before concluding the transmitter is hung. */ #define DEFAULT_TX_CMP_TO (SBT_1S * 5) /* Number of queues to check for missing queues per timer tick */ #define DEFAULT_TX_MONITORED_QUEUES (4) /* Max number of timeouted packets before device reset */ #define DEFAULT_TX_CMP_THRESHOLD (128) /* * Supported PCI vendor and devices IDs */ #define PCI_VENDOR_ID_AMAZON 0x1d0f #define PCI_DEV_ID_ENA_PF 0x0ec2 #define PCI_DEV_ID_ENA_LLQ_PF 0x1ec2 #define PCI_DEV_ID_ENA_VF 0xec20 #define PCI_DEV_ID_ENA_LLQ_VF 0xec21 struct msix_entry { int entry; int vector; }; typedef struct _ena_vendor_info_t { uint16_t vendor_id; uint16_t device_id; unsigned int index; } ena_vendor_info_t; struct ena_irq { /* Interrupt resources */ struct resource *res; driver_filter_t *handler; void *data; void *cookie; unsigned int vector; bool requested; int cpu; char name[ENA_IRQNAME_SIZE]; }; struct ena_que { struct ena_adapter *adapter; struct ena_ring *tx_ring; struct ena_ring *rx_ring; struct task cleanup_task; struct taskqueue *cleanup_tq; uint32_t id; int cpu; }; struct ena_calc_queue_size_ctx { struct ena_com_dev_get_features_ctx *get_feat_ctx; struct ena_com_dev *ena_dev; device_t pdev; uint16_t rx_queue_size; uint16_t tx_queue_size; uint16_t max_tx_sgl_size; uint16_t max_rx_sgl_size; }; struct ena_tx_buffer { struct mbuf *mbuf; /* # of ena desc for this specific mbuf * (includes data desc and metadata desc) */ unsigned int tx_descs; /* # of buffers used by this mbuf */ unsigned int num_of_bufs; bus_dmamap_t map_head; bus_dmamap_t map_seg; /* Indicate if segments of the mbuf were mapped */ bool seg_mapped; /* Indicate if bufs[0] maps the linear data of the mbuf */ bool head_mapped; /* Used to detect missing tx packets */ struct bintime timestamp; bool print_once; struct ena_com_buf bufs[ENA_PKT_MAX_BUFS]; } __aligned(CACHE_LINE_SIZE); struct ena_rx_buffer { struct mbuf *mbuf; bus_dmamap_t map; struct ena_com_buf ena_buf; } __aligned(CACHE_LINE_SIZE); struct ena_stats_tx { counter_u64_t cnt; counter_u64_t bytes; counter_u64_t prepare_ctx_err; counter_u64_t dma_mapping_err; counter_u64_t doorbells; counter_u64_t missing_tx_comp; counter_u64_t bad_req_id; counter_u64_t collapse; counter_u64_t collapse_err; counter_u64_t queue_wakeup; counter_u64_t queue_stop; counter_u64_t llq_buffer_copy; }; struct ena_stats_rx { counter_u64_t cnt; counter_u64_t bytes; counter_u64_t refil_partial; counter_u64_t bad_csum; counter_u64_t mjum_alloc_fail; counter_u64_t mbuf_alloc_fail; counter_u64_t dma_mapping_err; counter_u64_t bad_desc_num; counter_u64_t bad_req_id; counter_u64_t empty_rx_ring; }; struct ena_ring { /* Holds the empty requests for TX/RX out of order completions */ union { uint16_t *free_tx_ids; uint16_t *free_rx_ids; }; struct ena_com_dev *ena_dev; struct ena_adapter *adapter; struct ena_com_io_cq *ena_com_io_cq; struct ena_com_io_sq *ena_com_io_sq; uint16_t qid; /* Determines if device will use LLQ or normal mode for TX */ enum ena_admin_placement_policy_type tx_mem_queue_type; /* The maximum length the driver can push to the device (For LLQ) */ uint8_t tx_max_header_size; bool first_interrupt; uint16_t no_interrupt_event_cnt; struct ena_com_rx_buf_info ena_bufs[ENA_PKT_MAX_BUFS]; /* * Fields used for Adaptive Interrupt Modulation - to be implemented in * the future releases */ uint32_t smoothed_interval; enum ena_intr_moder_level moder_tbl_idx; struct ena_que *que; struct lro_ctrl lro; uint16_t next_to_use; uint16_t next_to_clean; union { struct ena_tx_buffer *tx_buffer_info; /* contex of tx packet */ struct ena_rx_buffer *rx_buffer_info; /* contex of rx packet */ }; int ring_size; /* number of tx/rx_buffer_info's entries */ struct buf_ring *br; /* only for TX */ uint32_t buf_ring_size; struct mtx ring_mtx; char mtx_name[16]; struct { struct task enqueue_task; struct taskqueue *enqueue_tq; }; union { struct ena_stats_tx tx_stats; struct ena_stats_rx rx_stats; }; union { int empty_rx_queue; /* For Tx ring to indicate if it's running or not */ bool running; }; /* Used for LLQ */ uint8_t *push_buf_intermediate_buf; } __aligned(CACHE_LINE_SIZE); struct ena_stats_dev { counter_u64_t wd_expired; counter_u64_t interface_up; counter_u64_t interface_down; counter_u64_t admin_q_pause; }; struct ena_hw_stats { counter_u64_t rx_packets; counter_u64_t tx_packets; counter_u64_t rx_bytes; counter_u64_t tx_bytes; counter_u64_t rx_drops; }; /* Board specific private data structure */ struct ena_adapter { struct ena_com_dev *ena_dev; /* OS defined structs */ if_t ifp; device_t pdev; struct ifmedia media; /* OS resources */ struct resource *memory; struct resource *registers; struct mtx global_mtx; struct sx ioctl_sx; /* MSI-X */ uint32_t msix_enabled; struct msix_entry *msix_entries; int msix_vecs; /* DMA tags used throughout the driver adapter for Tx and Rx */ bus_dma_tag_t tx_buf_tag; bus_dma_tag_t rx_buf_tag; int dma_width; uint32_t max_mtu; uint16_t max_tx_sgl_size; uint16_t max_rx_sgl_size; uint32_t tx_offload_cap; /* Tx fast path data */ int num_queues; unsigned int tx_ring_size; unsigned int rx_ring_size; uint16_t buf_ring_size; /* RSS*/ uint8_t rss_ind_tbl[ENA_RX_RSS_TABLE_SIZE]; bool rss_support; uint8_t mac_addr[ETHER_ADDR_LEN]; /* mdio and phy*/ bool link_status; bool trigger_reset; bool up; bool running; /* Queue will represent one TX and one RX ring */ struct ena_que que[ENA_MAX_NUM_IO_QUEUES] __aligned(CACHE_LINE_SIZE); /* TX */ struct ena_ring tx_ring[ENA_MAX_NUM_IO_QUEUES] __aligned(CACHE_LINE_SIZE); /* RX */ struct ena_ring rx_ring[ENA_MAX_NUM_IO_QUEUES] __aligned(CACHE_LINE_SIZE); struct ena_irq irq_tbl[ENA_MAX_MSIX_VEC(ENA_MAX_NUM_IO_QUEUES)]; /* Timer service */ struct callout timer_service; sbintime_t keep_alive_timestamp; uint32_t next_monitored_tx_qid; struct task reset_task; struct taskqueue *reset_tq; int wd_active; sbintime_t keep_alive_timeout; sbintime_t missing_tx_timeout; uint32_t missing_tx_max_queues; uint32_t missing_tx_threshold; /* Statistics */ struct ena_stats_dev dev_stats; struct ena_hw_stats hw_stats; enum ena_regs_reset_reason_types reset_reason; }; #define ENA_RING_MTX_LOCK(_ring) mtx_lock(&(_ring)->ring_mtx) #define ENA_RING_MTX_TRYLOCK(_ring) mtx_trylock(&(_ring)->ring_mtx) #define ENA_RING_MTX_UNLOCK(_ring) mtx_unlock(&(_ring)->ring_mtx) static inline int ena_mbuf_count(struct mbuf *mbuf) { int count = 1; while ((mbuf = mbuf->m_next) != NULL) ++count; return count; } #endif /* !(ENA_H) */