[net-next-2.6.git] / drivers / net / vmxnet3 / vmxnet3_int.h

/*
 * 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 <pv-drivers@vmware.com>
 *
 */

#ifndef _VMXNET3_INT_H
#define _VMXNET3_INT_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/init.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 "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(cpu_to_le32(val), (adapter)->hw_addr0 + (reg))
#define VMXNET3_READ_BAR0_REG(adapter, reg)        \
	le32_to_cpu(readl((adapter)->hw_addr0 + (reg)))

#define VMXNET3_WRITE_BAR1_REG(adapter, reg, val)  \
	writel(cpu_to_le32(val), (adapter)->hw_addr1 + (reg))
#define VMXNET3_READ_BAR1_REG(adapter, reg)        \
	le32_to_cpu(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)

void set_flag_le16(__le16 *data, u16 flag);
void set_flag_le64(__le64 *data, u64 flag);
void reset_flag_le64(__le64 *data, u64 flag);

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
Commit	Line	Data
d1a890fa SB	1	/*
	2	* Linux driver for VMware's vmxnet3 ethernet NIC.
	3	*
	4	* Copyright (C) 2008-2009, VMware, Inc. All Rights Reserved.
	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	*
	23	* Maintained by: Shreyas Bhatewara <pv-drivers@vmware.com>
	24	*
	25	*/
	26
	27	#ifndef _VMXNET3_INT_H
	28	#define _VMXNET3_INT_H
	29
d1a890fa SB	30	#include <linux/ethtool.h>
	31	#include <linux/delay.h>
	32	#include <linux/netdevice.h>
	33	#include <linux/pci.h>
d1a890fa	34	#include <linux/compiler.h>
d1a890fa SB	35	#include <linux/slab.h>
	36	#include <linux/spinlock.h>
	37	#include <linux/ioport.h>
	38	#include <linux/highmem.h>
	39	#include <linux/init.h>
	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>
d1a890fa SB	58
	59	#include "vmxnet3_defs.h"
	60
	61	#ifdef DEBUG
	62	# define VMXNET3_DRIVER_VERSION_REPORT VMXNET3_DRIVER_VERSION_STRING"-NAPI(debug)"
	63	#else
	64	# define VMXNET3_DRIVER_VERSION_REPORT VMXNET3_DRIVER_VERSION_STRING"-NAPI"
	65	#endif
	66
	67
	68	/*
	69	* Version numbers
	70	*/
	71	#define VMXNET3_DRIVER_VERSION_STRING "1.0.5.0-k"
	72
	73	/* a 32-bit int, each byte encode a verion number in VMXNET3_DRIVER_VERSION */
	74	#define VMXNET3_DRIVER_VERSION_NUM 0x01000500
	75
	76
	77	/*
	78	* Capabilities
	79	*/
	80
	81	enum {
	82	VMNET_CAP_SG = 0x0001, /* Can do scatter-gather transmits. */
	83	VMNET_CAP_IP4_CSUM = 0x0002, /* Can checksum only TCP/UDP over
	84	* IPv4 */
	85	VMNET_CAP_HW_CSUM = 0x0004, /* Can checksum all packets. */
	86	VMNET_CAP_HIGH_DMA = 0x0008, /* Can DMA to high memory. */
	87	VMNET_CAP_TOE = 0x0010, /* Supports TCP/IP offload. */
	88	VMNET_CAP_TSO = 0x0020, /* Supports TCP Segmentation
	89	* offload */
	90	VMNET_CAP_SW_TSO = 0x0040, /* Supports SW TCP Segmentation */
	91	VMNET_CAP_VMXNET_APROM = 0x0080, /* Vmxnet APROM support */
	92	VMNET_CAP_HW_TX_VLAN = 0x0100, /* Can we do VLAN tagging in HW */
	93	VMNET_CAP_HW_RX_VLAN = 0x0200, /* Can we do VLAN untagging in HW */
	94	VMNET_CAP_SW_VLAN = 0x0400, /* VLAN tagging/untagging in SW */
	95	VMNET_CAP_WAKE_PCKT_RCV = 0x0800, /* Can wake on network packet recv? */
	96	VMNET_CAP_ENABLE_INT_INLINE = 0x1000, /* Enable Interrupt Inline */
	97	VMNET_CAP_ENABLE_HEADER_COPY = 0x2000, /* copy header for vmkernel */
	98	VMNET_CAP_TX_CHAIN = 0x4000, /* Guest can use multiple tx entries
	99	* for a pkt */
	100	VMNET_CAP_RX_CHAIN = 0x8000, /* pkt can span multiple rx entries */
	101	VMNET_CAP_LPD = 0x10000, /* large pkt delivery */
	102	VMNET_CAP_BPF = 0x20000, /* BPF Support in VMXNET Virtual HW*/
	103	VMNET_CAP_SG_SPAN_PAGES = 0x40000, /* Scatter-gather can span multiple*/
	104	/* pages transmits */
	105	VMNET_CAP_IP6_CSUM = 0x80000, /* Can do IPv6 csum offload. */
	106	VMNET_CAP_TSO6 = 0x100000, /* TSO seg. offload for IPv6 pkts. */
	107	VMNET_CAP_TSO256k = 0x200000, /* Can do TSO seg offload for */
	108	/* pkts up to 256kB. */
	109	VMNET_CAP_UPT = 0x400000 /* Support UPT */
	110	};
	111
	112	/*
	113	* PCI vendor and device IDs.
	114	*/
	115	#define PCI_VENDOR_ID_VMWARE 0x15AD
	116	#define PCI_DEVICE_ID_VMWARE_VMXNET3 0x07B0
	117	#define MAX_ETHERNET_CARDS 10
	118	#define MAX_PCI_PASSTHRU_DEVICE 6
	119
	120	struct vmxnet3_cmd_ring {
	121	union Vmxnet3_GenericDesc *base;
122	u32 size;
123	u32 next2fill;
124	u32 next2comp;
125	u8 gen;
126	dma_addr_t basePA;
127	};
128
129	static inline void
130	vmxnet3_cmd_ring_adv_next2fill(struct vmxnet3_cmd_ring *ring)
131	{
132	ring->next2fill++;
133	if (unlikely(ring->next2fill == ring->size)) {
134	ring->next2fill = 0;
135	VMXNET3_FLIP_RING_GEN(ring->gen);
136	}
137	}
138
139	static inline void
140	vmxnet3_cmd_ring_adv_next2comp(struct vmxnet3_cmd_ring *ring)
141	{
142	VMXNET3_INC_RING_IDX_ONLY(ring->next2comp, ring->size);
143	}
144
145	static inline int
146	vmxnet3_cmd_ring_desc_avail(struct vmxnet3_cmd_ring *ring)
147	{
148	return (ring->next2comp > ring->next2fill ? 0 : ring->size) +
149	ring->next2comp - ring->next2fill - 1;
150	}
151
152	struct vmxnet3_comp_ring {
153	union Vmxnet3_GenericDesc *base;
154	u32 size;
155	u32 next2proc;
156	u8 gen;
157	u8 intr_idx;
158	dma_addr_t basePA;
159	};
160
161	static inline void
162	vmxnet3_comp_ring_adv_next2proc(struct vmxnet3_comp_ring *ring)
163	{
164	ring->next2proc++;
165	if (unlikely(ring->next2proc == ring->size)) {
166	ring->next2proc = 0;
167	VMXNET3_FLIP_RING_GEN(ring->gen);
168	}
169	}
170
171	struct vmxnet3_tx_data_ring {
172	struct Vmxnet3_TxDataDesc *base;
173	u32 size;
174	dma_addr_t basePA;
175	};
176
177	enum vmxnet3_buf_map_type {
178	VMXNET3_MAP_INVALID = 0,
179	VMXNET3_MAP_NONE,
180	VMXNET3_MAP_SINGLE,
181	VMXNET3_MAP_PAGE,
182	};
183
184	struct vmxnet3_tx_buf_info {
185	u32 map_type;
186	u16 len;
187	u16 sop_idx;
188	dma_addr_t dma_addr;
189	struct sk_buff *skb;
190	};
191
192	struct vmxnet3_tq_driver_stats {
193	u64 drop_total; /* # of pkts dropped by the driver, the
194	* counters below track droppings due to
195	* different reasons
196	*/
197	u64 drop_too_many_frags;
198	u64 drop_oversized_hdr;
199	u64 drop_hdr_inspect_err;
200	u64 drop_tso;
201
202	u64 tx_ring_full;
203	u64 linearized; /* # of pkts linearized */
204	u64 copy_skb_header; /* # of times we have to copy skb header */
205	u64 oversized_hdr;
206	};
207
208	struct vmxnet3_tx_ctx {
209	bool ipv4;
210	u16 mss;
211	u32 eth_ip_hdr_size; /* only valid for pkts requesting tso or csum
212	* offloading
213	*/
214	u32 l4_hdr_size; /* only valid if mss != 0 */
215	u32 copy_size; /* # of bytes copied into the data ring */
216	union Vmxnet3_GenericDesc *sop_txd;
217	union Vmxnet3_GenericDesc *eop_txd;
218	};
219
220	struct vmxnet3_tx_queue {
221	spinlock_t tx_lock;
222	struct vmxnet3_cmd_ring tx_ring;
223	struct vmxnet3_tx_buf_info *buf_info;
224	struct vmxnet3_tx_data_ring data_ring;
225	struct vmxnet3_comp_ring comp_ring;
226	struct Vmxnet3_TxQueueCtrl *shared;
227	struct vmxnet3_tq_driver_stats stats;
228	bool stopped;
229	int num_stop; /* # of times the queue is
230	* stopped */
231	} __attribute__((__aligned__(SMP_CACHE_BYTES)));
232
233	enum vmxnet3_rx_buf_type {
234	VMXNET3_RX_BUF_NONE = 0,
235	VMXNET3_RX_BUF_SKB = 1,
236	VMXNET3_RX_BUF_PAGE = 2
237	};
238
239	struct vmxnet3_rx_buf_info {
240	enum vmxnet3_rx_buf_type buf_type;
241	u16 len;
242	union {
243	struct sk_buff *skb;
244	struct page *page;
245	};
246	dma_addr_t dma_addr;
247	};
248
249	struct vmxnet3_rx_ctx {
250	struct sk_buff *skb;
251	u32 sop_idx;
252	};
253
254	struct vmxnet3_rq_driver_stats {
255	u64 drop_total;
256	u64 drop_err;
257	u64 drop_fcs;
258	u64 rx_buf_alloc_failure;
259	};
260
261	struct vmxnet3_rx_queue {
262	struct vmxnet3_cmd_ring rx_ring[2];
263	struct vmxnet3_comp_ring comp_ring;
264	struct vmxnet3_rx_ctx rx_ctx;
265	u32 qid; /* rqID in RCD for buffer from 1st ring */
266	u32 qid2; /* rqID in RCD for buffer from 2nd ring */
267	u32 uncommitted[2]; /* # of buffers allocated since last RXPROD
268	* update */
269	struct vmxnet3_rx_buf_info *buf_info[2];
270	struct Vmxnet3_RxQueueCtrl *shared;
271	struct vmxnet3_rq_driver_stats stats;
272	} __attribute__((__aligned__(SMP_CACHE_BYTES)));
273
274	#define VMXNET3_LINUX_MAX_MSIX_VECT 1
275
276	struct vmxnet3_intr {
277	enum vmxnet3_intr_mask_mode mask_mode;
278	enum vmxnet3_intr_type type; /* MSI-X, MSI, or INTx? */
279	u8 num_intrs; /* # of intr vectors */
280	u8 event_intr_idx; /* idx of the intr vector for event */
281	u8 mod_levels[VMXNET3_LINUX_MAX_MSIX_VECT]; /* moderation level */
282	#ifdef CONFIG_PCI_MSI
283	struct msix_entry msix_entries[VMXNET3_LINUX_MAX_MSIX_VECT];
284	#endif
285	};
286
287	#define VMXNET3_STATE_BIT_RESETTING 0
288	#define VMXNET3_STATE_BIT_QUIESCED 1
289	struct vmxnet3_adapter {
290	struct vmxnet3_tx_queue tx_queue;
291	struct vmxnet3_rx_queue rx_queue;
292	struct napi_struct napi;
293	struct vlan_group *vlan_grp;
294
295	struct vmxnet3_intr intr;
296
297	struct Vmxnet3_DriverShared *shared;
298	struct Vmxnet3_PMConf *pm_conf;
299	struct Vmxnet3_TxQueueDesc tqd_start; / first tx queue desc */
300	struct Vmxnet3_RxQueueDesc rqd_start; / first rx queue desc */
301	struct net_device *netdev;
302	struct pci_dev *pdev;
303
304	u8 hw_addr0; / for BAR 0 */
305	u8 hw_addr1; / for BAR 1 */
306
307	/* feature control */
308	bool rxcsum;
309	bool lro;
310	bool jumbo_frame;
311
312	/* rx buffer related */
313	unsigned skb_buf_size;
314	int rx_buf_per_pkt; /* only apply to the 1st ring */
315	dma_addr_t shared_pa;
316	dma_addr_t queue_desc_pa;
317
318	/* Wake-on-LAN */
319	u32 wol;
320
321	/* Link speed */
322	u32 link_speed; /* in mbps */
323
324	u64 tx_timeout_count;
325	struct work_struct work;
326
327	unsigned long state; /* VMXNET3_STATE_BIT_xxx */
328
329	int dev_number;
330	};
331
332	#define VMXNET3_WRITE_BAR0_REG(adapter, reg, val) \
115924b6	333	writel(cpu_to_le32(val), (adapter)->hw_addr0 + (reg))
d1a890fa	334	#define VMXNET3_READ_BAR0_REG(adapter, reg) \
115924b6	335	le32_to_cpu(readl((adapter)->hw_addr0 + (reg)))
d1a890fa SB	336
d1a890fa SB	337	#define VMXNET3_WRITE_BAR1_REG(adapter, reg, val) \
115924b6	338	writel(cpu_to_le32(val), (adapter)->hw_addr1 + (reg))
d1a890fa	339	#define VMXNET3_READ_BAR1_REG(adapter, reg) \
115924b6	340	le32_to_cpu(readl((adapter)->hw_addr1 + (reg)))
d1a890fa SB	341
	342	#define VMXNET3_WAKE_QUEUE_THRESHOLD(tq) (5)
	343	#define VMXNET3_RX_ALLOC_THRESHOLD(rq, ring_idx, adapter) \
	344	((rq)->rx_ring[ring_idx].size >> 3)
	345
	346	#define VMXNET3_GET_ADDR_LO(dma) ((u32)(dma))
	347	#define VMXNET3_GET_ADDR_HI(dma) ((u32)(((u64)(dma)) >> 32))
	348
	349	/* must be a multiple of VMXNET3_RING_SIZE_ALIGN */
	350	#define VMXNET3_DEF_TX_RING_SIZE 512
	351	#define VMXNET3_DEF_RX_RING_SIZE 256
	352
	353	#define VMXNET3_MAX_ETH_HDR_SIZE 22
	354	#define VMXNET3_MAX_SKB_BUF_SIZE (3*1024)
	355
115924b6 SB	356	void set_flag_le16(__le16 *data, u16 flag);
	357	void set_flag_le64(__le64 *data, u64 flag);
	358	void reset_flag_le64(__le64 *data, u64 flag);
	359
d1a890fa SB	360	int
	361	vmxnet3_quiesce_dev(struct vmxnet3_adapter *adapter);
	362
	363	int
	364	vmxnet3_activate_dev(struct vmxnet3_adapter *adapter);
	365
	366	void
	367	vmxnet3_force_close(struct vmxnet3_adapter *adapter);
	368
	369	void
	370	vmxnet3_reset_dev(struct vmxnet3_adapter *adapter);
	371
	372	void
	373	vmxnet3_tq_destroy(struct vmxnet3_tx_queue *tq,
	374	struct vmxnet3_adapter *adapter);
	375
	376	void
	377	vmxnet3_rq_destroy(struct vmxnet3_rx_queue *rq,
	378	struct vmxnet3_adapter *adapter);
	379
	380	int
	381	vmxnet3_create_queues(struct vmxnet3_adapter *adapter,
	382	u32 tx_ring_size, u32 rx_ring_size, u32 rx_ring2_size);
	383
	384	extern void vmxnet3_set_ethtool_ops(struct net_device *netdev);
	385	extern struct net_device_stats vmxnet3_get_stats(struct net_device netdev);
	386
	387	extern char vmxnet3_driver_name[];
	388	#endif