[mirror_ubuntu-artful-kernel.git] / drivers / net / vmxnet3 / vmxnet3_int.h

/*
 * Linux driver for VMware's vmxnet3 ethernet NIC.
 *
 * Copyright (C) 2008-2016, 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: pv-drivers@vmware.com
 *
 */

#ifndef _VMXNET3_INT_H
#define _VMXNET3_INT_H

#include <linux/bitops.h>
#include <linux/ethtool.h>
#include <linux/delay.h>
#include <linux/netdevice.h>
#include <linux/pci.h>
#include <linux/compiler.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/ioport.h>
#include <linux/highmem.h>
#include <linux/timer.h>
#include <linux/skbuff.h>
#include <linux/interrupt.h>
#include <linux/workqueue.h>
#include <linux/uaccess.h>
#include <asm/dma.h>
#include <asm/page.h>

#include <linux/tcp.h>
#include <linux/udp.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
#include <linux/in.h>
#include <linux/etherdevice.h>
#include <asm/checksum.h>
#include <linux/if_vlan.h>
#include <linux/if_arp.h>
#include <linux/inetdevice.h>
#include <linux/log2.h>

#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   "1.4.a.0-k"

/* a 32-bit int, each byte encode a verion number in VMXNET3_DRIVER_VERSION */
#define VMXNET3_DRIVER_VERSION_NUM      0x01040a00

#if defined(CONFIG_PCI_MSI)
	/* RSS only makes sense if MSI-X is supported. */
	#define VMXNET3_RSS
#endif

#define VMXNET3_REV_3		2	/* Vmxnet3 Rev. 3 */
#define VMXNET3_REV_2		1	/* Vmxnet3 Rev. 2 */
#define VMXNET3_REV_1		0	/* Vmxnet3 Rev. 1 */

/*
 * 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 */
};

/*
 * Maximum devices supported.
 */
#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;
	bool   ipv6;
	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 {
	char			name[IFNAMSIZ+8]; /* To identify interrupt */
	struct vmxnet3_adapter		*adapter;
	spinlock_t                      tx_lock;
	struct vmxnet3_cmd_ring         tx_ring;
	struct vmxnet3_tx_buf_info      *buf_info;
	dma_addr_t                       buf_info_pa;
	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 */
	int				qid;
	u16				txdata_desc_size;
} __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_data_ring {
	Vmxnet3_RxDataDesc *base;
	dma_addr_t basePA;
	u16 desc_size;
};

struct vmxnet3_rx_queue {
	char			name[IFNAMSIZ + 8]; /* To identify interrupt */
	struct vmxnet3_adapter	  *adapter;
	struct napi_struct        napi;
	struct vmxnet3_cmd_ring   rx_ring[2];
	struct vmxnet3_rx_data_ring data_ring;
	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 dataRingQid;    /* rqID in RCD for buffer from data ring */
	struct vmxnet3_rx_buf_info     *buf_info[2];
	dma_addr_t                      buf_info_pa;
	struct Vmxnet3_RxQueueCtrl            *shared;
	struct vmxnet3_rq_driver_stats  stats;
} __attribute__((__aligned__(SMP_CACHE_BYTES)));

#define VMXNET3_DEVICE_MAX_TX_QUEUES 8
#define VMXNET3_DEVICE_MAX_RX_QUEUES 8   /* Keep this value as a power of 2 */

/* Should be less than UPT1_RSS_MAX_IND_TABLE_SIZE */
#define VMXNET3_RSS_IND_TABLE_SIZE (VMXNET3_DEVICE_MAX_RX_QUEUES * 4)

#define VMXNET3_LINUX_MAX_MSIX_VECT     (VMXNET3_DEVICE_MAX_TX_QUEUES + \
					 VMXNET3_DEVICE_MAX_RX_QUEUES + 1)
#define VMXNET3_LINUX_MIN_MSIX_VECT     2 /* 1 for tx-rx pair and 1 for event */


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 */
	char	event_msi_vector_name[IFNAMSIZ+17];
#ifdef CONFIG_PCI_MSI
	struct msix_entry msix_entries[VMXNET3_LINUX_MAX_MSIX_VECT];
#endif
};

/* Interrupt sharing schemes, share_intr */
#define VMXNET3_INTR_BUDDYSHARE 0    /* Corresponding tx,rx queues share irq */
#define VMXNET3_INTR_TXSHARE 1	     /* All tx queues share one irq */
#define VMXNET3_INTR_DONTSHARE 2     /* each queue has its own irq */


#define VMXNET3_STATE_BIT_RESETTING   0
#define VMXNET3_STATE_BIT_QUIESCED    1
struct vmxnet3_adapter {
	struct vmxnet3_tx_queue		tx_queue[VMXNET3_DEVICE_MAX_TX_QUEUES];
	struct vmxnet3_rx_queue		rx_queue[VMXNET3_DEVICE_MAX_RX_QUEUES];
	unsigned long			active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
	struct vmxnet3_intr		intr;
	spinlock_t			cmd_lock;
	struct Vmxnet3_DriverShared	*shared;
	struct Vmxnet3_PMConf		*pm_conf;
	struct Vmxnet3_TxQueueDesc	*tqd_start;     /* all tx queue desc */
	struct Vmxnet3_RxQueueDesc	*rqd_start;	/* all rx queue desc */
	struct net_device		*netdev;
	struct pci_dev			*pdev;

	u8			__iomem *hw_addr0; /* for BAR 0 */
	u8			__iomem *hw_addr1; /* for BAR 1 */
	u8                              version;

	bool				rxcsum;
	bool				lro;

#ifdef VMXNET3_RSS
	struct UPT1_RSSConf		*rss_conf;
	bool				rss;
#endif
	u32				num_rx_queues;
	u32				num_tx_queues;

	/* 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;
	dma_addr_t coal_conf_pa;

	/* Wake-on-LAN */
	u32     wol;

	/* Link speed */
	u32     link_speed; /* in mbps */

	u64     tx_timeout_count;

	/* Ring sizes */
	u32 tx_ring_size;
	u32 rx_ring_size;
	u32 rx_ring2_size;

	/* Size of buffer in the data ring */
	u16 txdata_desc_size;
	u16 rxdata_desc_size;

	bool rxdataring_enabled;

	struct work_struct work;

	unsigned long  state;    /* VMXNET3_STATE_BIT_xxx */

	int share_intr;

	struct Vmxnet3_CoalesceScheme *coal_conf;
	bool   default_coal_mode;

	dma_addr_t adapter_pa;
	dma_addr_t pm_conf_pa;
	dma_addr_t rss_conf_pa;
};

#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))

#define VMXNET3_VERSION_GE_2(adapter) \
	(adapter->version >= VMXNET3_REV_2 + 1)
#define VMXNET3_VERSION_GE_3(adapter) \
	(adapter->version >= VMXNET3_REV_3 + 1)

/* 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_DEF_RX_RING2_SIZE   128

#define VMXNET3_DEF_RXDATA_DESC_SIZE 128

#define VMXNET3_MAX_ETH_HDR_SIZE    22
#define VMXNET3_MAX_SKB_BUF_SIZE    (3*1024)

#define VMXNET3_GET_RING_IDX(adapter, rqID)		\
	((rqID >= adapter->num_rx_queues &&		\
	 rqID < 2 * adapter->num_rx_queues) ? 1 : 0)	\

#define VMXNET3_RX_DATA_RING(adapter, rqID)		\
	(rqID >= 2 * adapter->num_rx_queues &&		\
	rqID < 3 * adapter->num_rx_queues)		\

#define VMXNET3_COAL_STATIC_DEFAULT_DEPTH	64

#define VMXNET3_COAL_RBC_RATE(usecs) (1000000 / usecs)
#define VMXNET3_COAL_RBC_USECS(rbc_rate) (1000000 / rbc_rate)

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_all(struct vmxnet3_adapter *adapter);

void
vmxnet3_rq_destroy_all(struct vmxnet3_adapter *adapter);

int
vmxnet3_set_features(struct net_device *netdev, netdev_features_t features);

int
vmxnet3_create_queues(struct vmxnet3_adapter *adapter,
		      u32 tx_ring_size, u32 rx_ring_size, u32 rx_ring2_size,
		      u16 txdata_desc_size, u16 rxdata_desc_size);

void vmxnet3_set_ethtool_ops(struct net_device *netdev);

void vmxnet3_get_stats64(struct net_device *dev,
			 struct rtnl_link_stats64 *stats);

extern char vmxnet3_driver_name[];
#endif
Commit	Line	Data
d1a890fa SB	1	/*
	2	* Linux driver for VMware's vmxnet3 ethernet NIC.
	3	*
190af10f	4	* Copyright (C) 2008-2016, VMware, Inc. All Rights Reserved.
d1a890fa SB	5	*
	6	* This program is free software; you can redistribute it and/or modify it
	7	* under the terms of the GNU General Public License as published by the
	8	* Free Software Foundation; version 2 of the License and no later version.
	9	*
	10	* This program is distributed in the hope that it will be useful, but
	11	* WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
	13	* NON INFRINGEMENT. See the GNU General Public License for more
	14	* details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	19	*
	20	* The full GNU General Public License is included in this distribution in
	21	* the file called "COPYING".
	22	*
190af10f	23	* Maintained by: pv-drivers@vmware.com
d1a890fa SB	24	*
	25	*/
	26
	27	#ifndef _VMXNET3_INT_H
	28	#define _VMXNET3_INT_H
	29
72e85c45	30	#include <linux/bitops.h>
d1a890fa SB	31	#include <linux/ethtool.h>
	32	#include <linux/delay.h>
	33	#include <linux/netdevice.h>
	34	#include <linux/pci.h>
d1a890fa	35	#include <linux/compiler.h>
d1a890fa SB	36	#include <linux/slab.h>
	37	#include <linux/spinlock.h>
	38	#include <linux/ioport.h>
	39	#include <linux/highmem.h>
d1a890fa SB	40	#include <linux/timer.h>
	41	#include <linux/skbuff.h>
	42	#include <linux/interrupt.h>
	43	#include <linux/workqueue.h>
	44	#include <linux/uaccess.h>
	45	#include <asm/dma.h>
	46	#include <asm/page.h>
	47
	48	#include <linux/tcp.h>
	49	#include <linux/udp.h>
	50	#include <linux/ip.h>
	51	#include <linux/ipv6.h>
	52	#include <linux/in.h>
	53	#include <linux/etherdevice.h>
	54	#include <asm/checksum.h>
	55	#include <linux/if_vlan.h>
	56	#include <linux/if_arp.h>
	57	#include <linux/inetdevice.h>
eebb02b1	58	#include <linux/log2.h>
d1a890fa SB	59
	60	#include "vmxnet3_defs.h"
	61
	62	#ifdef DEBUG
	63	# define VMXNET3_DRIVER_VERSION_REPORT VMXNET3_DRIVER_VERSION_STRING"-NAPI(debug)"
	64	#else
	65	# define VMXNET3_DRIVER_VERSION_REPORT VMXNET3_DRIVER_VERSION_STRING"-NAPI"
	66	#endif
	67
	68
	69	/*
	70	* Version numbers
	71	*/
ff2e7d5d	72	#define VMXNET3_DRIVER_VERSION_STRING "1.4.a.0-k"
d1a890fa SB	73
d1a890fa SB	74	/* a 32-bit int, each byte encode a verion number in VMXNET3_DRIVER_VERSION */
ff2e7d5d	75	#define VMXNET3_DRIVER_VERSION_NUM 0x01040a00
d1a890fa	76
09c5088e SB	77	#if defined(CONFIG_PCI_MSI)
	78	/* RSS only makes sense if MSI-X is supported. */
	79	#define VMXNET3_RSS
	80	#endif
d1a890fa	81
190af10f SK	82	#define VMXNET3_REV_3 2 /* Vmxnet3 Rev. 3 */
	83	#define VMXNET3_REV_2 1 /* Vmxnet3 Rev. 2 */
	84	#define VMXNET3_REV_1 0 /* Vmxnet3 Rev. 1 */
	85
d1a890fa SB	86	/*
	87	* Capabilities
	88	*/
	89
	90	enum {
	91	VMNET_CAP_SG = 0x0001, /* Can do scatter-gather transmits. */
	92	VMNET_CAP_IP4_CSUM = 0x0002, /* Can checksum only TCP/UDP over
	93	* IPv4 */
	94	VMNET_CAP_HW_CSUM = 0x0004, /* Can checksum all packets. */
	95	VMNET_CAP_HIGH_DMA = 0x0008, /* Can DMA to high memory. */
	96	VMNET_CAP_TOE = 0x0010, /* Supports TCP/IP offload. */
	97	VMNET_CAP_TSO = 0x0020, /* Supports TCP Segmentation
	98	* offload */
	99	VMNET_CAP_SW_TSO = 0x0040, /* Supports SW TCP Segmentation */
	100	VMNET_CAP_VMXNET_APROM = 0x0080, /* Vmxnet APROM support */
	101	VMNET_CAP_HW_TX_VLAN = 0x0100, /* Can we do VLAN tagging in HW */
	102	VMNET_CAP_HW_RX_VLAN = 0x0200, /* Can we do VLAN untagging in HW */
	103	VMNET_CAP_SW_VLAN = 0x0400, /* VLAN tagging/untagging in SW */
	104	VMNET_CAP_WAKE_PCKT_RCV = 0x0800, /* Can wake on network packet recv? */
	105	VMNET_CAP_ENABLE_INT_INLINE = 0x1000, /* Enable Interrupt Inline */
	106	VMNET_CAP_ENABLE_HEADER_COPY = 0x2000, /* copy header for vmkernel */
	107	VMNET_CAP_TX_CHAIN = 0x4000, /* Guest can use multiple tx entries
	108	* for a pkt */
	109	VMNET_CAP_RX_CHAIN = 0x8000, /* pkt can span multiple rx entries */
	110	VMNET_CAP_LPD = 0x10000, /* large pkt delivery */
	111	VMNET_CAP_BPF = 0x20000, /* BPF Support in VMXNET Virtual HW*/
	112	VMNET_CAP_SG_SPAN_PAGES = 0x40000, /* Scatter-gather can span multiple*/
	113	/* pages transmits */
	114	VMNET_CAP_IP6_CSUM = 0x80000, /* Can do IPv6 csum offload. */
	115	VMNET_CAP_TSO6 = 0x100000, /* TSO seg. offload for IPv6 pkts. */
	116	VMNET_CAP_TSO256k = 0x200000, /* Can do TSO seg offload for */
	117	/* pkts up to 256kB. */
	118	VMNET_CAP_UPT = 0x400000 /* Support UPT */
	119	};
	120
	121	/*
b1226c7d	122	* Maximum devices supported.
d1a890fa	123	*/
d1a890fa SB	124	#define MAX_ETHERNET_CARDS 10
	125	#define MAX_PCI_PASSTHRU_DEVICE 6
	126
	127	struct vmxnet3_cmd_ring {
	128	union Vmxnet3_GenericDesc *base;
	129	u32 size;
	130	u32 next2fill;
	131	u32 next2comp;
	132	u8 gen;
	133	dma_addr_t basePA;
	134	};
	135
	136	static inline void
	137	vmxnet3_cmd_ring_adv_next2fill(struct vmxnet3_cmd_ring *ring)
	138	{
	139	ring->next2fill++;
	140	if (unlikely(ring->next2fill == ring->size)) {
	141	ring->next2fill = 0;
	142	VMXNET3_FLIP_RING_GEN(ring->gen);
	143	}
	144	}
	145
	146	static inline void
	147	vmxnet3_cmd_ring_adv_next2comp(struct vmxnet3_cmd_ring *ring)
	148	{
	149	VMXNET3_INC_RING_IDX_ONLY(ring->next2comp, ring->size);
	150	}
	151
	152	static inline int
	153	vmxnet3_cmd_ring_desc_avail(struct vmxnet3_cmd_ring *ring)
	154	{
	155	return (ring->next2comp > ring->next2fill ? 0 : ring->size) +
	156	ring->next2comp - ring->next2fill - 1;
	157	}
	158
	159	struct vmxnet3_comp_ring {
	160	union Vmxnet3_GenericDesc *base;
	161	u32 size;
	162	u32 next2proc;
	163	u8 gen;
	164	u8 intr_idx;
	165	dma_addr_t basePA;
	166	};
	167
	168	static inline void
	169	vmxnet3_comp_ring_adv_next2proc(struct vmxnet3_comp_ring *ring)
	170	{
	171	ring->next2proc++;
	172	if (unlikely(ring->next2proc == ring->size)) {
	173	ring->next2proc = 0;
	174	VMXNET3_FLIP_RING_GEN(ring->gen);
	175	}
	176	}
	177
	178	struct vmxnet3_tx_data_ring {
	179	struct Vmxnet3_TxDataDesc *base;
	180	u32 size;
	181	dma_addr_t basePA;
	182	};
	183
	184	enum vmxnet3_buf_map_type {
	185	VMXNET3_MAP_INVALID = 0,
	186	VMXNET3_MAP_NONE,
	187	VMXNET3_MAP_SINGLE,
188	VMXNET3_MAP_PAGE,
189	};
190
191	struct vmxnet3_tx_buf_info {
192	u32 map_type;
193	u16 len;
194	u16 sop_idx;
195	dma_addr_t dma_addr;
196	struct sk_buff *skb;
197	};
198
199	struct vmxnet3_tq_driver_stats {
200	u64 drop_total; /* # of pkts dropped by the driver, the
201	* counters below track droppings due to
202	* different reasons
203	*/
204	u64 drop_too_many_frags;
205	u64 drop_oversized_hdr;
206	u64 drop_hdr_inspect_err;
207	u64 drop_tso;
208
209	u64 tx_ring_full;
210	u64 linearized; /* # of pkts linearized */
211	u64 copy_skb_header; /* # of times we have to copy skb header */
212	u64 oversized_hdr;
213	};
214
215	struct vmxnet3_tx_ctx {
216	bool ipv4;
759c9359	217	bool ipv6;
d1a890fa SB	218	u16 mss;
	219	u32 eth_ip_hdr_size; /* only valid for pkts requesting tso or csum
	220	* offloading
	221	*/
	222	u32 l4_hdr_size; /* only valid if mss != 0 */
	223	u32 copy_size; /* # of bytes copied into the data ring */
	224	union Vmxnet3_GenericDesc *sop_txd;
	225	union Vmxnet3_GenericDesc *eop_txd;
	226	};
	227
	228	struct vmxnet3_tx_queue {
09c5088e SB	229	char name[IFNAMSIZ+8]; /* To identify interrupt */
09c5088e SB	230	struct vmxnet3_adapter *adapter;
d1a890fa SB	231	spinlock_t tx_lock;
d1a890fa SB	232	struct vmxnet3_cmd_ring tx_ring;
09c5088e	233	struct vmxnet3_tx_buf_info *buf_info;
b0eb57cb	234	dma_addr_t buf_info_pa;
d1a890fa SB	235	struct vmxnet3_tx_data_ring data_ring;
d1a890fa SB	236	struct vmxnet3_comp_ring comp_ring;
09c5088e	237	struct Vmxnet3_TxQueueCtrl *shared;
d1a890fa SB	238	struct vmxnet3_tq_driver_stats stats;
	239	bool stopped;
	240	int num_stop; /* # of times the queue is
	241	* stopped */
09c5088e	242	int qid;
3c8b3efc	243	u16 txdata_desc_size;
d1a890fa SB	244	} __attribute__((__aligned__(SMP_CACHE_BYTES)));
	245
	246	enum vmxnet3_rx_buf_type {
	247	VMXNET3_RX_BUF_NONE = 0,
	248	VMXNET3_RX_BUF_SKB = 1,
	249	VMXNET3_RX_BUF_PAGE = 2
	250	};
	251
	252	struct vmxnet3_rx_buf_info {
	253	enum vmxnet3_rx_buf_type buf_type;
	254	u16 len;
	255	union {
	256	struct sk_buff *skb;
	257	struct page *page;
	258	};
	259	dma_addr_t dma_addr;
	260	};
	261
	262	struct vmxnet3_rx_ctx {
	263	struct sk_buff *skb;
	264	u32 sop_idx;
	265	};
	266
	267	struct vmxnet3_rq_driver_stats {
	268	u64 drop_total;
	269	u64 drop_err;
	270	u64 drop_fcs;
	271	u64 rx_buf_alloc_failure;
	272	};
	273
50a5ce3e SK	274	struct vmxnet3_rx_data_ring {
	275	Vmxnet3_RxDataDesc *base;
	276	dma_addr_t basePA;
	277	u16 desc_size;
	278	};
	279
d1a890fa	280	struct vmxnet3_rx_queue {
09c5088e SB	281	char name[IFNAMSIZ + 8]; /* To identify interrupt */
	282	struct vmxnet3_adapter *adapter;
	283	struct napi_struct napi;
d1a890fa	284	struct vmxnet3_cmd_ring rx_ring[2];
50a5ce3e	285	struct vmxnet3_rx_data_ring data_ring;
d1a890fa SB	286	struct vmxnet3_comp_ring comp_ring;
	287	struct vmxnet3_rx_ctx rx_ctx;
	288	u32 qid; /* rqID in RCD for buffer from 1st ring */
	289	u32 qid2; /* rqID in RCD for buffer from 2nd ring */
50a5ce3e	290	u32 dataRingQid; /* rqID in RCD for buffer from data ring */
d1a890fa	291	struct vmxnet3_rx_buf_info *buf_info[2];
b0eb57cb	292	dma_addr_t buf_info_pa;
d1a890fa SB	293	struct Vmxnet3_RxQueueCtrl *shared;
	294	struct vmxnet3_rq_driver_stats stats;
	295	} __attribute__((__aligned__(SMP_CACHE_BYTES)));
	296
09c5088e SB	297	#define VMXNET3_DEVICE_MAX_TX_QUEUES 8
	298	#define VMXNET3_DEVICE_MAX_RX_QUEUES 8 /* Keep this value as a power of 2 */
	299
	300	/* Should be less than UPT1_RSS_MAX_IND_TABLE_SIZE */
	301	#define VMXNET3_RSS_IND_TABLE_SIZE (VMXNET3_DEVICE_MAX_RX_QUEUES * 4)
	302
	303	#define VMXNET3_LINUX_MAX_MSIX_VECT (VMXNET3_DEVICE_MAX_TX_QUEUES + \
	304	VMXNET3_DEVICE_MAX_RX_QUEUES + 1)
7e96fbf2	305	#define VMXNET3_LINUX_MIN_MSIX_VECT 2 /* 1 for tx-rx pair and 1 for event */
09c5088e	306
d1a890fa SB	307
	308	struct vmxnet3_intr {
	309	enum vmxnet3_intr_mask_mode mask_mode;
	310	enum vmxnet3_intr_type type; /* MSI-X, MSI, or INTx? */
	311	u8 num_intrs; /* # of intr vectors */
	312	u8 event_intr_idx; /* idx of the intr vector for event */
	313	u8 mod_levels[VMXNET3_LINUX_MAX_MSIX_VECT]; /* moderation level */
c7673e4d	314	char event_msi_vector_name[IFNAMSIZ+17];
d1a890fa SB	315	#ifdef CONFIG_PCI_MSI
	316	struct msix_entry msix_entries[VMXNET3_LINUX_MAX_MSIX_VECT];
	317	#endif
	318	};
	319
09c5088e SB	320	/* Interrupt sharing schemes, share_intr */
	321	#define VMXNET3_INTR_BUDDYSHARE 0 /* Corresponding tx,rx queues share irq */
	322	#define VMXNET3_INTR_TXSHARE 1 /* All tx queues share one irq */
	323	#define VMXNET3_INTR_DONTSHARE 2 /* each queue has its own irq */
	324
	325
d1a890fa SB	326	#define VMXNET3_STATE_BIT_RESETTING 0
	327	#define VMXNET3_STATE_BIT_QUIESCED 1
	328	struct vmxnet3_adapter {
09c5088e SB	329	struct vmxnet3_tx_queue tx_queue[VMXNET3_DEVICE_MAX_TX_QUEUES];
09c5088e SB	330	struct vmxnet3_rx_queue rx_queue[VMXNET3_DEVICE_MAX_RX_QUEUES];
72e85c45	331	unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
09c5088e	332	struct vmxnet3_intr intr;
83d0feff	333	spinlock_t cmd_lock;
09c5088e SB	334	struct Vmxnet3_DriverShared *shared;
	335	struct Vmxnet3_PMConf *pm_conf;
	336	struct Vmxnet3_TxQueueDesc tqd_start; / all tx queue desc */
	337	struct Vmxnet3_RxQueueDesc rqd_start; / all rx queue desc */
	338	struct net_device *netdev;
09c5088e	339	struct pci_dev *pdev;
d1a890fa	340
81e8e560 HH	341	u8 __iomem hw_addr0; / for BAR 0 */
81e8e560 HH	342	u8 __iomem hw_addr1; / for BAR 1 */
45dac1d6 SB	343	u8 version;
	344
	345	bool rxcsum;
	346	bool lro;
d1a890fa	347
09c5088e SB	348	#ifdef VMXNET3_RSS
	349	struct UPT1_RSSConf *rss_conf;
	350	bool rss;
	351	#endif
	352	u32 num_rx_queues;
	353	u32 num_tx_queues;
d1a890fa SB	354
	355	/* rx buffer related */
	356	unsigned skb_buf_size;
	357	int rx_buf_per_pkt; /* only apply to the 1st ring */
	358	dma_addr_t shared_pa;
	359	dma_addr_t queue_desc_pa;
4edef40e	360	dma_addr_t coal_conf_pa;
d1a890fa SB	361
	362	/* Wake-on-LAN */
	363	u32 wol;
	364
	365	/* Link speed */
	366	u32 link_speed; /* in mbps */
	367
	368	u64 tx_timeout_count;
f00e2b0a NH	369
	370	/* Ring sizes */
	371	u32 tx_ring_size;
	372	u32 rx_ring_size;
53831aa1	373	u32 rx_ring2_size;
f00e2b0a	374
3c8b3efc SK	375	/* Size of buffer in the data ring */
3c8b3efc SK	376	u16 txdata_desc_size;
50a5ce3e SK	377	u16 rxdata_desc_size;
	378
	379	bool rxdataring_enabled;
3c8b3efc	380
d1a890fa SB	381	struct work_struct work;
	382
	383	unsigned long state; /* VMXNET3_STATE_BIT_xxx */
	384
09c5088e	385	int share_intr;
b0eb57cb	386
4edef40e SK	387	struct Vmxnet3_CoalesceScheme *coal_conf;
	388	bool default_coal_mode;
	389
b0eb57cb AK	390	dma_addr_t adapter_pa;
	391	dma_addr_t pm_conf_pa;
	392	dma_addr_t rss_conf_pa;
d1a890fa SB	393	};
	394
	395	#define VMXNET3_WRITE_BAR0_REG(adapter, reg, val) \
b8744cab	396	writel((val), (adapter)->hw_addr0 + (reg))
d1a890fa	397	#define VMXNET3_READ_BAR0_REG(adapter, reg) \
b8744cab	398	readl((adapter)->hw_addr0 + (reg))
d1a890fa SB	399
d1a890fa SB	400	#define VMXNET3_WRITE_BAR1_REG(adapter, reg, val) \
b8744cab	401	writel((val), (adapter)->hw_addr1 + (reg))
d1a890fa	402	#define VMXNET3_READ_BAR1_REG(adapter, reg) \
b8744cab	403	readl((adapter)->hw_addr1 + (reg))
d1a890fa SB	404
	405	#define VMXNET3_WAKE_QUEUE_THRESHOLD(tq) (5)
	406	#define VMXNET3_RX_ALLOC_THRESHOLD(rq, ring_idx, adapter) \
	407	((rq)->rx_ring[ring_idx].size >> 3)
	408
	409	#define VMXNET3_GET_ADDR_LO(dma) ((u32)(dma))
	410	#define VMXNET3_GET_ADDR_HI(dma) ((u32)(((u64)(dma)) >> 32))
	411
190af10f SK	412	#define VMXNET3_VERSION_GE_2(adapter) \
	413	(adapter->version >= VMXNET3_REV_2 + 1)
	414	#define VMXNET3_VERSION_GE_3(adapter) \
	415	(adapter->version >= VMXNET3_REV_3 + 1)
	416
d1a890fa SB	417	/* must be a multiple of VMXNET3_RING_SIZE_ALIGN */
	418	#define VMXNET3_DEF_TX_RING_SIZE 512
	419	#define VMXNET3_DEF_RX_RING_SIZE 256
53831aa1	420	#define VMXNET3_DEF_RX_RING2_SIZE 128
d1a890fa	421
50a5ce3e SK	422	#define VMXNET3_DEF_RXDATA_DESC_SIZE 128
50a5ce3e SK	423
d1a890fa SB	424	#define VMXNET3_MAX_ETH_HDR_SIZE 22
	425	#define VMXNET3_MAX_SKB_BUF_SIZE (3*1024)
	426
50a5ce3e SK	427	#define VMXNET3_GET_RING_IDX(adapter, rqID) \
	428	((rqID >= adapter->num_rx_queues && \
	429	rqID < 2 * adapter->num_rx_queues) ? 1 : 0) \
	430
	431	#define VMXNET3_RX_DATA_RING(adapter, rqID) \
	432	(rqID >= 2 * adapter->num_rx_queues && \
	433	rqID < 3 * adapter->num_rx_queues) \
	434
4edef40e SK	435	#define VMXNET3_COAL_STATIC_DEFAULT_DEPTH 64
	436
	437	#define VMXNET3_COAL_RBC_RATE(usecs) (1000000 / usecs)
	438	#define VMXNET3_COAL_RBC_USECS(rbc_rate) (1000000 / rbc_rate)
	439
d1a890fa SB	440	int
	441	vmxnet3_quiesce_dev(struct vmxnet3_adapter *adapter);
	442
	443	int
	444	vmxnet3_activate_dev(struct vmxnet3_adapter *adapter);
	445
	446	void
	447	vmxnet3_force_close(struct vmxnet3_adapter *adapter);
	448
	449	void
	450	vmxnet3_reset_dev(struct vmxnet3_adapter *adapter);
	451
	452	void
09c5088e	453	vmxnet3_tq_destroy_all(struct vmxnet3_adapter *adapter);
d1a890fa SB	454
d1a890fa SB	455	void
09c5088e	456	vmxnet3_rq_destroy_all(struct vmxnet3_adapter *adapter);
d1a890fa	457
a0d2730c	458	int
c8f44aff	459	vmxnet3_set_features(struct net_device *netdev, netdev_features_t features);
a0d2730c	460
d1a890fa SB	461	int
d1a890fa SB	462	vmxnet3_create_queues(struct vmxnet3_adapter *adapter,
3c8b3efc	463	u32 tx_ring_size, u32 rx_ring_size, u32 rx_ring2_size,
50a5ce3e	464	u16 txdata_desc_size, u16 rxdata_desc_size);
d1a890fa	465
d8dea1eb	466	void vmxnet3_set_ethtool_ops(struct net_device *netdev);
95305f6c	467
bc1f4470	468	void vmxnet3_get_stats64(struct net_device *dev,
bc1f4470	469	struct rtnl_link_stats64 *stats);
d1a890fa SB	470
	471	extern char vmxnet3_driver_name[];
	472	#endif