/* * Linux driver for VMware's vmxnet3 ethernet NIC. * * Copyright (C) 2008-2009, VMware, Inc. All Rights Reserved. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; version 2 of the License and no later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or * NON INFRINGEMENT. See the GNU General Public License for more * details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * The full GNU General Public License is included in this distribution in * the file called "COPYING". * * Maintained by: Shreyas Bhatewara * */ #ifndef _VMXNET3_INT_H #define _VMXNET3_INT_H #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "vmxnet3_defs.h" #ifdef DEBUG # define VMXNET3_DRIVER_VERSION_REPORT VMXNET3_DRIVER_VERSION_STRING"-NAPI(debug)" #else # define VMXNET3_DRIVER_VERSION_REPORT VMXNET3_DRIVER_VERSION_STRING"-NAPI" #endif /* * Version numbers */ #define VMXNET3_DRIVER_VERSION_STRING "1.0.5.0-k" /* a 32-bit int, each byte encode a verion number in VMXNET3_DRIVER_VERSION */ #define VMXNET3_DRIVER_VERSION_NUM 0x01000500 /* * Capabilities */ enum { VMNET_CAP_SG = 0x0001, /* Can do scatter-gather transmits. */ VMNET_CAP_IP4_CSUM = 0x0002, /* Can checksum only TCP/UDP over * IPv4 */ VMNET_CAP_HW_CSUM = 0x0004, /* Can checksum all packets. */ VMNET_CAP_HIGH_DMA = 0x0008, /* Can DMA to high memory. */ VMNET_CAP_TOE = 0x0010, /* Supports TCP/IP offload. */ VMNET_CAP_TSO = 0x0020, /* Supports TCP Segmentation * offload */ VMNET_CAP_SW_TSO = 0x0040, /* Supports SW TCP Segmentation */ VMNET_CAP_VMXNET_APROM = 0x0080, /* Vmxnet APROM support */ VMNET_CAP_HW_TX_VLAN = 0x0100, /* Can we do VLAN tagging in HW */ VMNET_CAP_HW_RX_VLAN = 0x0200, /* Can we do VLAN untagging in HW */ VMNET_CAP_SW_VLAN = 0x0400, /* VLAN tagging/untagging in SW */ VMNET_CAP_WAKE_PCKT_RCV = 0x0800, /* Can wake on network packet recv? */ VMNET_CAP_ENABLE_INT_INLINE = 0x1000, /* Enable Interrupt Inline */ VMNET_CAP_ENABLE_HEADER_COPY = 0x2000, /* copy header for vmkernel */ VMNET_CAP_TX_CHAIN = 0x4000, /* Guest can use multiple tx entries * for a pkt */ VMNET_CAP_RX_CHAIN = 0x8000, /* pkt can span multiple rx entries */ VMNET_CAP_LPD = 0x10000, /* large pkt delivery */ VMNET_CAP_BPF = 0x20000, /* BPF Support in VMXNET Virtual HW*/ VMNET_CAP_SG_SPAN_PAGES = 0x40000, /* Scatter-gather can span multiple*/ /* pages transmits */ VMNET_CAP_IP6_CSUM = 0x80000, /* Can do IPv6 csum offload. */ VMNET_CAP_TSO6 = 0x100000, /* TSO seg. offload for IPv6 pkts. */ VMNET_CAP_TSO256k = 0x200000, /* Can do TSO seg offload for */ /* pkts up to 256kB. */ VMNET_CAP_UPT = 0x400000 /* Support UPT */ }; /* * PCI vendor and device IDs. */ #define PCI_VENDOR_ID_VMWARE 0x15AD #define PCI_DEVICE_ID_VMWARE_VMXNET3 0x07B0 #define MAX_ETHERNET_CARDS 10 #define MAX_PCI_PASSTHRU_DEVICE 6 struct vmxnet3_cmd_ring { union Vmxnet3_GenericDesc *base; u32 size; u32 next2fill; u32 next2comp; u8 gen; dma_addr_t basePA; }; static inline void vmxnet3_cmd_ring_adv_next2fill(struct vmxnet3_cmd_ring *ring) { ring->next2fill++; if (unlikely(ring->next2fill == ring->size)) { ring->next2fill = 0; VMXNET3_FLIP_RING_GEN(ring->gen); } } static inline void vmxnet3_cmd_ring_adv_next2comp(struct vmxnet3_cmd_ring *ring) { VMXNET3_INC_RING_IDX_ONLY(ring->next2comp, ring->size); } static inline int vmxnet3_cmd_ring_desc_avail(struct vmxnet3_cmd_ring *ring) { return (ring->next2comp > ring->next2fill ? 0 : ring->size) + ring->next2comp - ring->next2fill - 1; } struct vmxnet3_comp_ring { union Vmxnet3_GenericDesc *base; u32 size; u32 next2proc; u8 gen; u8 intr_idx; dma_addr_t basePA; }; static inline void vmxnet3_comp_ring_adv_next2proc(struct vmxnet3_comp_ring *ring) { ring->next2proc++; if (unlikely(ring->next2proc == ring->size)) { ring->next2proc = 0; VMXNET3_FLIP_RING_GEN(ring->gen); } } struct vmxnet3_tx_data_ring { struct Vmxnet3_TxDataDesc *base; u32 size; dma_addr_t basePA; }; enum vmxnet3_buf_map_type { VMXNET3_MAP_INVALID = 0, VMXNET3_MAP_NONE, VMXNET3_MAP_SINGLE, VMXNET3_MAP_PAGE, }; struct vmxnet3_tx_buf_info { u32 map_type; u16 len; u16 sop_idx; dma_addr_t dma_addr; struct sk_buff *skb; }; struct vmxnet3_tq_driver_stats { u64 drop_total; /* # of pkts dropped by the driver, the * counters below track droppings due to * different reasons */ u64 drop_too_many_frags; u64 drop_oversized_hdr; u64 drop_hdr_inspect_err; u64 drop_tso; u64 tx_ring_full; u64 linearized; /* # of pkts linearized */ u64 copy_skb_header; /* # of times we have to copy skb header */ u64 oversized_hdr; }; struct vmxnet3_tx_ctx { bool ipv4; u16 mss; u32 eth_ip_hdr_size; /* only valid for pkts requesting tso or csum * offloading */ u32 l4_hdr_size; /* only valid if mss != 0 */ u32 copy_size; /* # of bytes copied into the data ring */ union Vmxnet3_GenericDesc *sop_txd; union Vmxnet3_GenericDesc *eop_txd; }; struct vmxnet3_tx_queue { spinlock_t tx_lock; struct vmxnet3_cmd_ring tx_ring; struct vmxnet3_tx_buf_info *buf_info; struct vmxnet3_tx_data_ring data_ring; struct vmxnet3_comp_ring comp_ring; struct Vmxnet3_TxQueueCtrl *shared; struct vmxnet3_tq_driver_stats stats; bool stopped; int num_stop; /* # of times the queue is * stopped */ } __attribute__((__aligned__(SMP_CACHE_BYTES))); enum vmxnet3_rx_buf_type { VMXNET3_RX_BUF_NONE = 0, VMXNET3_RX_BUF_SKB = 1, VMXNET3_RX_BUF_PAGE = 2 }; struct vmxnet3_rx_buf_info { enum vmxnet3_rx_buf_type buf_type; u16 len; union { struct sk_buff *skb; struct page *page; }; dma_addr_t dma_addr; }; struct vmxnet3_rx_ctx { struct sk_buff *skb; u32 sop_idx; }; struct vmxnet3_rq_driver_stats { u64 drop_total; u64 drop_err; u64 drop_fcs; u64 rx_buf_alloc_failure; }; struct vmxnet3_rx_queue { struct vmxnet3_cmd_ring rx_ring[2]; struct vmxnet3_comp_ring comp_ring; struct vmxnet3_rx_ctx rx_ctx; u32 qid; /* rqID in RCD for buffer from 1st ring */ u32 qid2; /* rqID in RCD for buffer from 2nd ring */ u32 uncommitted[2]; /* # of buffers allocated since last RXPROD * update */ struct vmxnet3_rx_buf_info *buf_info[2]; struct Vmxnet3_RxQueueCtrl *shared; struct vmxnet3_rq_driver_stats stats; } __attribute__((__aligned__(SMP_CACHE_BYTES))); #define VMXNET3_LINUX_MAX_MSIX_VECT 1 struct vmxnet3_intr { enum vmxnet3_intr_mask_mode mask_mode; enum vmxnet3_intr_type type; /* MSI-X, MSI, or INTx? */ u8 num_intrs; /* # of intr vectors */ u8 event_intr_idx; /* idx of the intr vector for event */ u8 mod_levels[VMXNET3_LINUX_MAX_MSIX_VECT]; /* moderation level */ #ifdef CONFIG_PCI_MSI struct msix_entry msix_entries[VMXNET3_LINUX_MAX_MSIX_VECT]; #endif }; #define VMXNET3_STATE_BIT_RESETTING 0 #define VMXNET3_STATE_BIT_QUIESCED 1 struct vmxnet3_adapter { struct vmxnet3_tx_queue tx_queue; struct vmxnet3_rx_queue rx_queue; struct napi_struct napi; struct vlan_group *vlan_grp; struct vmxnet3_intr intr; struct Vmxnet3_DriverShared *shared; struct Vmxnet3_PMConf *pm_conf; struct Vmxnet3_TxQueueDesc *tqd_start; /* first tx queue desc */ struct Vmxnet3_RxQueueDesc *rqd_start; /* first rx queue desc */ struct net_device *netdev; struct pci_dev *pdev; u8 *hw_addr0; /* for BAR 0 */ u8 *hw_addr1; /* for BAR 1 */ /* feature control */ bool rxcsum; bool lro; bool jumbo_frame; /* rx buffer related */ unsigned skb_buf_size; int rx_buf_per_pkt; /* only apply to the 1st ring */ dma_addr_t shared_pa; dma_addr_t queue_desc_pa; /* Wake-on-LAN */ u32 wol; /* Link speed */ u32 link_speed; /* in mbps */ u64 tx_timeout_count; struct work_struct work; unsigned long state; /* VMXNET3_STATE_BIT_xxx */ int dev_number; }; #define VMXNET3_WRITE_BAR0_REG(adapter, reg, val) \ writel((val), (adapter)->hw_addr0 + (reg)) #define VMXNET3_READ_BAR0_REG(adapter, reg) \ readl((adapter)->hw_addr0 + (reg)) #define VMXNET3_WRITE_BAR1_REG(adapter, reg, val) \ writel((val), (adapter)->hw_addr1 + (reg)) #define VMXNET3_READ_BAR1_REG(adapter, reg) \ readl((adapter)->hw_addr1 + (reg)) #define VMXNET3_WAKE_QUEUE_THRESHOLD(tq) (5) #define VMXNET3_RX_ALLOC_THRESHOLD(rq, ring_idx, adapter) \ ((rq)->rx_ring[ring_idx].size >> 3) #define VMXNET3_GET_ADDR_LO(dma) ((u32)(dma)) #define VMXNET3_GET_ADDR_HI(dma) ((u32)(((u64)(dma)) >> 32)) /* must be a multiple of VMXNET3_RING_SIZE_ALIGN */ #define VMXNET3_DEF_TX_RING_SIZE 512 #define VMXNET3_DEF_RX_RING_SIZE 256 #define VMXNET3_MAX_ETH_HDR_SIZE 22 #define VMXNET3_MAX_SKB_BUF_SIZE (3*1024) int vmxnet3_quiesce_dev(struct vmxnet3_adapter *adapter); int vmxnet3_activate_dev(struct vmxnet3_adapter *adapter); void vmxnet3_force_close(struct vmxnet3_adapter *adapter); void vmxnet3_reset_dev(struct vmxnet3_adapter *adapter); void vmxnet3_tq_destroy(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter); void vmxnet3_rq_destroy(struct vmxnet3_rx_queue *rq, struct vmxnet3_adapter *adapter); int vmxnet3_create_queues(struct vmxnet3_adapter *adapter, u32 tx_ring_size, u32 rx_ring_size, u32 rx_ring2_size); extern void vmxnet3_set_ethtool_ops(struct net_device *netdev); extern struct net_device_stats *vmxnet3_get_stats(struct net_device *netdev); extern char vmxnet3_driver_name[]; #endif