[mirror_ubuntu-zesty-kernel.git] / drivers / net / ethernet / cisco / enic / enic.h

/*
 * Copyright 2008-2010 Cisco Systems, Inc.  All rights reserved.
 * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
 *
 * This program is free software; you may 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.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */

#ifndef _ENIC_H_
#define _ENIC_H_

#include "vnic_enet.h"
#include "vnic_dev.h"
#include "vnic_wq.h"
#include "vnic_rq.h"
#include "vnic_cq.h"
#include "vnic_intr.h"
#include "vnic_stats.h"
#include "vnic_nic.h"
#include "vnic_rss.h"
#include <linux/irq.h>

#define DRV_NAME		"enic"
#define DRV_DESCRIPTION		"Cisco VIC Ethernet NIC Driver"
#define DRV_VERSION		"2.3.0.12"
#define DRV_COPYRIGHT		"Copyright 2008-2013 Cisco Systems, Inc"

#define ENIC_BARS_MAX		6

#define ENIC_WQ_MAX		8
#define ENIC_RQ_MAX		8
#define ENIC_CQ_MAX		(ENIC_WQ_MAX + ENIC_RQ_MAX)
#define ENIC_INTR_MAX		(ENIC_CQ_MAX + 2)

#define ENIC_AIC_LARGE_PKT_DIFF	3

struct enic_msix_entry {
	int requested;
	char devname[IFNAMSIZ];
	irqreturn_t (*isr)(int, void *);
	void *devid;
};

/* Store only the lower range.  Higher range is given by fw. */
struct enic_intr_mod_range {
	u32 small_pkt_range_start;
	u32 large_pkt_range_start;
};

struct enic_intr_mod_table {
	u32 rx_rate;
	u32 range_percent;
};

#define ENIC_MAX_LINK_SPEEDS		3
#define ENIC_LINK_SPEED_10G		10000
#define ENIC_LINK_SPEED_4G		4000
#define ENIC_LINK_40G_INDEX		2
#define ENIC_LINK_10G_INDEX		1
#define ENIC_LINK_4G_INDEX		0
#define ENIC_RX_COALESCE_RANGE_END	125
#define ENIC_AIC_TS_BREAK		100

struct enic_rx_coal {
	u32 small_pkt_range_start;
	u32 large_pkt_range_start;
	u32 range_end;
	u32 use_adaptive_rx_coalesce;
};

/* priv_flags */
#define ENIC_SRIOV_ENABLED		(1 << 0)

/* enic port profile set flags */
#define ENIC_PORT_REQUEST_APPLIED	(1 << 0)
#define ENIC_SET_REQUEST		(1 << 1)
#define ENIC_SET_NAME			(1 << 2)
#define ENIC_SET_INSTANCE		(1 << 3)
#define ENIC_SET_HOST			(1 << 4)

struct enic_port_profile {
	u32 set;
	u8 request;
	char name[PORT_PROFILE_MAX];
	u8 instance_uuid[PORT_UUID_MAX];
	u8 host_uuid[PORT_UUID_MAX];
	u8 vf_mac[ETH_ALEN];
	u8 mac_addr[ETH_ALEN];
};

/* enic_rfs_fltr_node - rfs filter node in hash table
 *	@@keys: IPv4 5 tuple
 *	@flow_id: flow_id of clsf filter provided by kernel
 *	@fltr_id: filter id of clsf filter returned by adaptor
 *	@rq_id: desired rq index
 *	@node: hlist_node
 */
struct enic_rfs_fltr_node {
	struct flow_keys keys;
	u32 flow_id;
	u16 fltr_id;
	u16 rq_id;
	struct hlist_node node;
};

/* enic_rfs_flw_tbl - rfs flow table
 *	@max: Maximum number of filters vNIC supports
 *	@free: Number of free filters available
 *	@toclean: hash table index to clean next
 *	@ht_head: hash table list head
 *	@lock: spin lock
 *	@rfs_may_expire: timer function for enic_rps_may_expire_flow
 */
struct enic_rfs_flw_tbl {
	u16 max;
	int free;

#define ENIC_RFS_FLW_BITSHIFT	(10)
#define ENIC_RFS_FLW_MASK	((1 << ENIC_RFS_FLW_BITSHIFT) - 1)
	u16 toclean:ENIC_RFS_FLW_BITSHIFT;
	struct hlist_head ht_head[1 << ENIC_RFS_FLW_BITSHIFT];
	spinlock_t lock;
	struct timer_list rfs_may_expire;
};

/* Per-instance private data structure */
struct enic {
	struct net_device *netdev;
	struct pci_dev *pdev;
	struct vnic_enet_config config;
	struct vnic_dev_bar bar[ENIC_BARS_MAX];
	struct vnic_dev *vdev;
	struct timer_list notify_timer;
	struct work_struct reset;
	struct work_struct tx_hang_reset;
	struct work_struct change_mtu_work;
	struct msix_entry msix_entry[ENIC_INTR_MAX];
	struct enic_msix_entry msix[ENIC_INTR_MAX];
	u32 msg_enable;
	spinlock_t devcmd_lock;
	u8 mac_addr[ETH_ALEN];
	unsigned int flags;
	unsigned int priv_flags;
	unsigned int mc_count;
	unsigned int uc_count;
	u32 port_mtu;
	struct enic_rx_coal rx_coalesce_setting;
	u32 rx_coalesce_usecs;
	u32 tx_coalesce_usecs;
#ifdef CONFIG_PCI_IOV
	u16 num_vfs;
#endif
	spinlock_t enic_api_lock;
	struct enic_port_profile *pp;

	/* work queue cache line section */
	____cacheline_aligned struct vnic_wq wq[ENIC_WQ_MAX];
	spinlock_t wq_lock[ENIC_WQ_MAX];
	unsigned int wq_count;
	u16 loop_enable;
	u16 loop_tag;

	/* receive queue cache line section */
	____cacheline_aligned struct vnic_rq rq[ENIC_RQ_MAX];
	unsigned int rq_count;
	u64 rq_truncated_pkts;
	u64 rq_bad_fcs;
	struct napi_struct napi[ENIC_RQ_MAX + ENIC_WQ_MAX];

	/* interrupt resource cache line section */
	____cacheline_aligned struct vnic_intr intr[ENIC_INTR_MAX];
	unsigned int intr_count;
	u32 __iomem *legacy_pba;		/* memory-mapped */

	/* completion queue cache line section */
	____cacheline_aligned struct vnic_cq cq[ENIC_CQ_MAX];
	unsigned int cq_count;
	struct enic_rfs_flw_tbl rfs_h;
	u32 rx_copybreak;
	u8 rss_key[ENIC_RSS_LEN];
	struct vnic_gen_stats gen_stats;
};

static inline struct net_device *vnic_get_netdev(struct vnic_dev *vdev)
{
	struct enic *enic = vdev->priv;

	return enic->netdev;
}

/* wrappers function for kernel log
 * Make sure variable vdev of struct vnic_dev is available in the block where
 * these macros are used
 */
#define vdev_info(args...)	dev_info(&vdev->pdev->dev, args)
#define vdev_warn(args...)	dev_warn(&vdev->pdev->dev, args)
#define vdev_err(args...)	dev_err(&vdev->pdev->dev, args)

#define vdev_netinfo(args...)	netdev_info(vnic_get_netdev(vdev), args)
#define vdev_netwarn(args...)	netdev_warn(vnic_get_netdev(vdev), args)
#define vdev_neterr(args...)	netdev_err(vnic_get_netdev(vdev), args)

static inline struct device *enic_get_dev(struct enic *enic)
{
	return &(enic->pdev->dev);
}

static inline unsigned int enic_cq_rq(struct enic *enic, unsigned int rq)
{
	return rq;
}

static inline unsigned int enic_cq_wq(struct enic *enic, unsigned int wq)
{
	return enic->rq_count + wq;
}

static inline unsigned int enic_legacy_io_intr(void)
{
	return 0;
}

static inline unsigned int enic_legacy_err_intr(void)
{
	return 1;
}

static inline unsigned int enic_legacy_notify_intr(void)
{
	return 2;
}

static inline unsigned int enic_msix_rq_intr(struct enic *enic,
	unsigned int rq)
{
	return enic->cq[enic_cq_rq(enic, rq)].interrupt_offset;
}

static inline unsigned int enic_msix_wq_intr(struct enic *enic,
	unsigned int wq)
{
	return enic->cq[enic_cq_wq(enic, wq)].interrupt_offset;
}

static inline unsigned int enic_msix_err_intr(struct enic *enic)
{
	return enic->rq_count + enic->wq_count;
}

static inline unsigned int enic_msix_notify_intr(struct enic *enic)
{
	return enic->rq_count + enic->wq_count + 1;
}

static inline int enic_dma_map_check(struct enic *enic, dma_addr_t dma_addr)
{
	if (unlikely(pci_dma_mapping_error(enic->pdev, dma_addr))) {
		net_warn_ratelimited("%s: PCI dma mapping failed!\n",
				     enic->netdev->name);
		enic->gen_stats.dma_map_error++;

		return -ENOMEM;
	}

	return 0;
}

void enic_reset_addr_lists(struct enic *enic);
int enic_sriov_enabled(struct enic *enic);
int enic_is_valid_vf(struct enic *enic, int vf);
int enic_is_dynamic(struct enic *enic);
void enic_set_ethtool_ops(struct net_device *netdev);
int __enic_set_rsskey(struct enic *enic);

#endif /* _ENIC_H_ */
Commit	Line	Data
01f2e4ea	1	/*
29046f9b	2	* Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
01f2e4ea SF	3	* Copyright 2007 Nuova Systems, Inc. All rights reserved.
	4	*
	5	* This program is free software; you may redistribute it and/or modify
	6	* it under the terms of the GNU General Public License as published by
	7	* the Free Software Foundation; version 2 of the License.
	8	*
	9	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	10	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	11	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	12	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	13	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	14	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	15	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	16	* SOFTWARE.
	17	*
	18	*/
	19
	20	#ifndef _ENIC_H_
	21	#define _ENIC_H_
	22
01f2e4ea SF	23	#include "vnic_enet.h"
	24	#include "vnic_dev.h"
	25	#include "vnic_wq.h"
	26	#include "vnic_rq.h"
	27	#include "vnic_cq.h"
	28	#include "vnic_intr.h"
	29	#include "vnic_stats.h"
6ba9cdc0	30	#include "vnic_nic.h"
717258ba	31	#include "vnic_rss.h"
fef1f07c	32	#include <linux/irq.h>
01f2e4ea SF	33
01f2e4ea SF	34	#define DRV_NAME "enic"
641cb85e	35	#define DRV_DESCRIPTION "Cisco VIC Ethernet NIC Driver"
373fb087	36	#define DRV_VERSION "2.3.0.12"
92e2b469	37	#define DRV_COPYRIGHT "Copyright 2008-2013 Cisco Systems, Inc"
01f2e4ea	38
27e6c7d3 SF	39	#define ENIC_BARS_MAX 6
27e6c7d3 SF	40
822473b6	41	#define ENIC_WQ_MAX 8
63da93d9	42	#define ENIC_RQ_MAX 8
6ba9cdc0 SF	43	#define ENIC_CQ_MAX (ENIC_WQ_MAX + ENIC_RQ_MAX)
	44	#define ENIC_INTR_MAX (ENIC_CQ_MAX + 2)
	45
7c2ce6e6 SS	46	#define ENIC_AIC_LARGE_PKT_DIFF 3
7c2ce6e6 SS	47
01f2e4ea SF	48	struct enic_msix_entry {
	49	int requested;
	50	char devname[IFNAMSIZ];
	51	irqreturn_t (isr)(int, void );
	52	void *devid;
	53	};
	54
7c2ce6e6 SS	55	/* Store only the lower range. Higher range is given by fw. */
	56	struct enic_intr_mod_range {
	57	u32 small_pkt_range_start;
	58	u32 large_pkt_range_start;
	59	};
	60
	61	struct enic_intr_mod_table {
	62	u32 rx_rate;
	63	u32 range_percent;
	64	};
	65
	66	#define ENIC_MAX_LINK_SPEEDS 3
	67	#define ENIC_LINK_SPEED_10G 10000
	68	#define ENIC_LINK_SPEED_4G 4000
	69	#define ENIC_LINK_40G_INDEX 2
	70	#define ENIC_LINK_10G_INDEX 1
	71	#define ENIC_LINK_4G_INDEX 0
	72	#define ENIC_RX_COALESCE_RANGE_END 125
	73	#define ENIC_AIC_TS_BREAK 100
	74
	75	struct enic_rx_coal {
	76	u32 small_pkt_range_start;
	77	u32 large_pkt_range_start;
	78	u32 range_end;
	79	u32 use_adaptive_rx_coalesce;
	80	};
	81
8749b427 RP	82	/* priv_flags */
	83	#define ENIC_SRIOV_ENABLED (1 << 0)
	84
	85	/* enic port profile set flags */
4dce2396	86	#define ENIC_PORT_REQUEST_APPLIED (1 << 0)
08f382eb SF	87	#define ENIC_SET_REQUEST (1 << 1)
	88	#define ENIC_SET_NAME (1 << 2)
	89	#define ENIC_SET_INSTANCE (1 << 3)
	90	#define ENIC_SET_HOST (1 << 4)
	91
f8bd9091	92	struct enic_port_profile {
08f382eb	93	u32 set;
f8bd9091 SF	94	u8 request;
	95	char name[PORT_PROFILE_MAX];
	96	u8 instance_uuid[PORT_UUID_MAX];
	97	u8 host_uuid[PORT_UUID_MAX];
0b1c00fc	98	u8 vf_mac[ETH_ALEN];
29639059	99	u8 mac_addr[ETH_ALEN];
f8bd9091 SF	100	};
f8bd9091 SF	101
a145df23 GV	102	/* enic_rfs_fltr_node - rfs filter node in hash table
	103	* @@keys: IPv4 5 tuple
	104	* @flow_id: flow_id of clsf filter provided by kernel
	105	* @fltr_id: filter id of clsf filter returned by adaptor
	106	* @rq_id: desired rq index
	107	* @node: hlist_node
	108	*/
	109	struct enic_rfs_fltr_node {
	110	struct flow_keys keys;
	111	u32 flow_id;
	112	u16 fltr_id;
	113	u16 rq_id;
	114	struct hlist_node node;
	115	};
	116
	117	/* enic_rfs_flw_tbl - rfs flow table
	118	* @max: Maximum number of filters vNIC supports
	119	* @free: Number of free filters available
	120	* @toclean: hash table index to clean next
	121	* @ht_head: hash table list head
	122	* @lock: spin lock
	123	* @rfs_may_expire: timer function for enic_rps_may_expire_flow
	124	*/
	125	struct enic_rfs_flw_tbl {
	126	u16 max;
	127	int free;
	128
	129	#define ENIC_RFS_FLW_BITSHIFT (10)
	130	#define ENIC_RFS_FLW_MASK ((1 << ENIC_RFS_FLW_BITSHIFT) - 1)
	131	u16 toclean:ENIC_RFS_FLW_BITSHIFT;
	132	struct hlist_head ht_head[1 << ENIC_RFS_FLW_BITSHIFT];
	133	spinlock_t lock;
	134	struct timer_list rfs_may_expire;
	135	};
	136
01f2e4ea SF	137	/* Per-instance private data structure */
	138	struct enic {
	139	struct net_device *netdev;
	140	struct pci_dev *pdev;
	141	struct vnic_enet_config config;
27e6c7d3	142	struct vnic_dev_bar bar[ENIC_BARS_MAX];
01f2e4ea	143	struct vnic_dev *vdev;
01f2e4ea SF	144	struct timer_list notify_timer;
01f2e4ea SF	145	struct work_struct reset;
937317c7	146	struct work_struct tx_hang_reset;
c97c894d	147	struct work_struct change_mtu_work;
717258ba VK	148	struct msix_entry msix_entry[ENIC_INTR_MAX];
717258ba VK	149	struct enic_msix_entry msix[ENIC_INTR_MAX];
01f2e4ea SF	150	u32 msg_enable;
	151	spinlock_t devcmd_lock;
	152	u8 mac_addr[ETH_ALEN];
9959a185	153	unsigned int flags;
8749b427	154	unsigned int priv_flags;
01f2e4ea	155	unsigned int mc_count;
319d7e84	156	unsigned int uc_count;
01f2e4ea	157	u32 port_mtu;
7c2ce6e6	158	struct enic_rx_coal rx_coalesce_setting;
7c844599 SF	159	u32 rx_coalesce_usecs;
7c844599 SF	160	u32 tx_coalesce_usecs;
8749b427	161	#ifdef CONFIG_PCI_IOV
413708bb	162	u16 num_vfs;
8749b427	163	#endif
0b038566	164	spinlock_t enic_api_lock;
3f192795	165	struct enic_port_profile *pp;
01f2e4ea SF	166
01f2e4ea SF	167	/* work queue cache line section */
6ba9cdc0 SF	168	____cacheline_aligned struct vnic_wq wq[ENIC_WQ_MAX];
6ba9cdc0 SF	169	spinlock_t wq_lock[ENIC_WQ_MAX];
01f2e4ea	170	unsigned int wq_count;
1825aca6 VK	171	u16 loop_enable;
1825aca6 VK	172	u16 loop_tag;
01f2e4ea SF	173
01f2e4ea SF	174	/* receive queue cache line section */
6ba9cdc0	175	____cacheline_aligned struct vnic_rq rq[ENIC_RQ_MAX];
01f2e4ea	176	unsigned int rq_count;
350991e1	177	u64 rq_truncated_pkts;
bd9fb1a4	178	u64 rq_bad_fcs;
4cfe8785	179	struct napi_struct napi[ENIC_RQ_MAX + ENIC_WQ_MAX];
01f2e4ea SF	180
01f2e4ea SF	181	/* interrupt resource cache line section */
6ba9cdc0	182	____cacheline_aligned struct vnic_intr intr[ENIC_INTR_MAX];
01f2e4ea SF	183	unsigned int intr_count;
	184	u32 __iomem legacy_pba; / memory-mapped */
	185
	186	/* completion queue cache line section */
	187	____cacheline_aligned struct vnic_cq cq[ENIC_CQ_MAX];
	188	unsigned int cq_count;
a145df23	189	struct enic_rfs_flw_tbl rfs_h;
a03bb56e	190	u32 rx_copybreak;
4f675eb2	191	u8 rss_key[ENIC_RSS_LEN];
58feff07	192	struct vnic_gen_stats gen_stats;
01f2e4ea SF	193	};
01f2e4ea SF	194
6a3c2f83 GV	195	static inline struct net_device vnic_get_netdev(struct vnic_dev vdev)
	196	{
	197	struct enic *enic = vdev->priv;
	198
	199	return enic->netdev;
	200	}
	201
	202	/* wrappers function for kernel log
	203	* Make sure variable vdev of struct vnic_dev is available in the block where
	204	* these macros are used
	205	*/
	206	#define vdev_info(args...) dev_info(&vdev->pdev->dev, args)
	207	#define vdev_warn(args...) dev_warn(&vdev->pdev->dev, args)
	208	#define vdev_err(args...) dev_err(&vdev->pdev->dev, args)
	209
	210	#define vdev_netinfo(args...) netdev_info(vnic_get_netdev(vdev), args)
	211	#define vdev_netwarn(args...) netdev_warn(vnic_get_netdev(vdev), args)
	212	#define vdev_neterr(args...) netdev_err(vnic_get_netdev(vdev), args)
	213
a7a79deb VK	214	static inline struct device enic_get_dev(struct enic enic)
	215	{
	216	return &(enic->pdev->dev);
	217	}
	218
f13bbc2f NP	219	static inline unsigned int enic_cq_rq(struct enic *enic, unsigned int rq)
	220	{
	221	return rq;
	222	}
	223
	224	static inline unsigned int enic_cq_wq(struct enic *enic, unsigned int wq)
	225	{
	226	return enic->rq_count + wq;
	227	}
	228
	229	static inline unsigned int enic_legacy_io_intr(void)
	230	{
	231	return 0;
	232	}
	233
	234	static inline unsigned int enic_legacy_err_intr(void)
	235	{
	236	return 1;
	237	}
	238
	239	static inline unsigned int enic_legacy_notify_intr(void)
	240	{
	241	return 2;
	242	}
	243
	244	static inline unsigned int enic_msix_rq_intr(struct enic *enic,
	245	unsigned int rq)
	246	{
	247	return enic->cq[enic_cq_rq(enic, rq)].interrupt_offset;
	248	}
	249
	250	static inline unsigned int enic_msix_wq_intr(struct enic *enic,
	251	unsigned int wq)
	252	{
	253	return enic->cq[enic_cq_wq(enic, wq)].interrupt_offset;
	254	}
	255
	256	static inline unsigned int enic_msix_err_intr(struct enic *enic)
	257	{
	258	return enic->rq_count + enic->wq_count;
	259	}
	260
	261	static inline unsigned int enic_msix_notify_intr(struct enic *enic)
	262	{
	263	return enic->rq_count + enic->wq_count + 1;
	264	}
	265
065df159 GV	266	static inline int enic_dma_map_check(struct enic *enic, dma_addr_t dma_addr)
	267	{
	268	if (unlikely(pci_dma_mapping_error(enic->pdev, dma_addr))) {
	269	net_warn_ratelimited("%s: PCI dma mapping failed!\n",
	270	enic->netdev->name);
58feff07	271	enic->gen_stats.dma_map_error++;
065df159 GV	272
	273	return -ENOMEM;
	274	}
	275
	276	return 0;
	277	}
	278
b3abfbd2	279	void enic_reset_addr_lists(struct enic *enic);
8749b427	280	int enic_sriov_enabled(struct enic *enic);
889d13f5	281	int enic_is_valid_vf(struct enic *enic, int vf);
3f192795	282	int enic_is_dynamic(struct enic *enic);
f13bbc2f	283	void enic_set_ethtool_ops(struct net_device *netdev);
4f675eb2	284	int __enic_set_rsskey(struct enic *enic);
b3abfbd2	285
01f2e4ea	286	#endif /* _ENIC_H_ */