linux/drivers/net/bna/bnad.h - nest-guard/1.0/linux - Git at Google

 /*
  * Linux network driver for Brocade Converged Network Adapter.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License (GPL) Version 2 as
  * published by the Free Software Foundation
  *
  * 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.  See the GNU
  * General Public License for more details.
  */
 /*
  * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
  * All rights reserved
  * www.brocade.com
  */
 #ifndef __BNAD_H__
 #define __BNAD_H__

 #include <linux/rtnetlink.h>
 #include <linux/workqueue.h>
 #include <linux/ipv6.h>
 #include <linux/etherdevice.h>
 #include <linux/mutex.h>
 #include <linux/firmware.h>

 /* Fix for IA64 */
 #include <asm/checksum.h>
 #include <net/ip6_checksum.h>

 #include <net/ip.h>
 #include <net/tcp.h>

 #include "bna.h"

 #define BNAD_TXQ_DEPTH		2048
 #define BNAD_RXQ_DEPTH		2048

 #define BNAD_MAX_TXS		1
 #define BNAD_MAX_TXQ_PER_TX	8	/* 8 priority queues */
 #define BNAD_TXQ_NUM		1

 #define BNAD_MAX_RXS		1
 #define BNAD_MAX_RXPS_PER_RX	16

 /*
  * Control structure pointed to ccb->ctrl, which
  * determines the NAPI / LRO behavior CCB
  * There is 1:1 corres. between ccb & ctrl
  */
 struct bnad_rx_ctrl {
 	struct bna_ccb *ccb;
 	struct napi_struct	napi;
 };

 #define BNAD_RXMODE_PROMISC_DEFAULT	BNA_RXMODE_PROMISC

 #define BNAD_GET_TX_ID(_skb)	(0)

 /*
  * GLOBAL #defines (CONSTANTS)
  */
 #define BNAD_NAME			"bna"
 #define BNAD_NAME_LEN			64

 #define BNAD_VERSION			"2.3.2.0"

 #define BNAD_MAILBOX_MSIX_VECTORS	1

 #define BNAD_STATS_TIMER_FREQ		1000 	/* in msecs */
 #define BNAD_DIM_TIMER_FREQ		1000 	/* in msecs */

 #define BNAD_MAX_Q_DEPTH		0x10000
 #define BNAD_MIN_Q_DEPTH		0x200

 #define BNAD_JUMBO_MTU			9000

 #define BNAD_NETIF_WAKE_THRESHOLD	8

 #define BNAD_RXQ_REFILL_THRESHOLD_SHIFT	3

 /* Bit positions for tcb->flags */
 #define BNAD_TXQ_FREE_SENT		0

 /* Bit positions for rcb->flags */
 #define BNAD_RXQ_REFILL			0
 #define BNAD_RXQ_STARTED		1

 /*
  * DATA STRUCTURES
  */

 /* enums */
 enum bnad_intr_source {
 	BNAD_INTR_TX		= 1,
 	BNAD_INTR_RX		= 2
 };

 enum bnad_link_state {
 	BNAD_LS_DOWN		= 0,
 	BNAD_LS_UP 		= 1
 };

 struct bnad_completion {
 	struct completion 	ioc_comp;
 	struct completion 	ucast_comp;
 	struct completion	mcast_comp;
 	struct completion	tx_comp;
 	struct completion	rx_comp;
 	struct completion	stats_comp;
 	struct completion	port_comp;

 	u8			ioc_comp_status;
 	u8			ucast_comp_status;
 	u8			mcast_comp_status;
 	u8			tx_comp_status;
 	u8			rx_comp_status;
 	u8			stats_comp_status;
 	u8			port_comp_status;
 };

 /* Tx Rx Control Stats */
 struct bnad_drv_stats {
 	u64 		netif_queue_stop;
 	u64		netif_queue_wakeup;
 	u64		tso4;
 	u64		tso6;
 	u64		tso_err;
 	u64		tcpcsum_offload;
 	u64		udpcsum_offload;
 	u64		csum_help;
 	u64		csum_help_err;

 	u64		hw_stats_updates;
 	u64		netif_rx_schedule;
 	u64		netif_rx_complete;
 	u64		netif_rx_dropped;

 	u64		link_toggle;
 	u64		cee_up;

 	u64		rxp_info_alloc_failed;
 	u64		mbox_intr_disabled;
 	u64		mbox_intr_enabled;
 	u64		tx_unmap_q_alloc_failed;
 	u64		rx_unmap_q_alloc_failed;

 	u64		rxbuf_alloc_failed;
 };

 /* Complete driver stats */
 struct bnad_stats {
 	struct bnad_drv_stats drv_stats;
 	struct bna_stats *bna_stats;
 };

 /* Tx / Rx Resources */
 struct bnad_tx_res_info {
 	struct bna_res_info res_info[BNA_TX_RES_T_MAX];
 };

 struct bnad_rx_res_info {
 	struct bna_res_info res_info[BNA_RX_RES_T_MAX];
 };

 struct bnad_tx_info {
 	struct bna_tx *tx; /* 1:1 between tx_info & tx */
 	struct bna_tcb *tcb[BNAD_MAX_TXQ_PER_TX];
 } ____cacheline_aligned;

 struct bnad_rx_info {
 	struct bna_rx *rx; /* 1:1 between rx_info & rx */

 	struct bnad_rx_ctrl rx_ctrl[BNAD_MAX_RXPS_PER_RX];
 } ____cacheline_aligned;

 /* Unmap queues for Tx / Rx cleanup */
 struct bnad_skb_unmap {
 	struct sk_buff		*skb;
 	DECLARE_PCI_UNMAP_ADDR(dma_addr)
 };

 struct bnad_unmap_q {
 	u32		producer_index;
 	u32		consumer_index;
 	u32 		q_depth;
 	/* This should be the last one */
 	struct bnad_skb_unmap unmap_array[1];
 };

 /* Bit mask values for bnad->cfg_flags */
 #define	BNAD_CF_DIM_ENABLED		0x01	/* DIM */
 #define	BNAD_CF_PROMISC			0x02
 #define BNAD_CF_ALLMULTI		0x04
 #define	BNAD_CF_MSIX			0x08	/* If in MSIx mode */

 /* Defines for run_flags bit-mask */
 /* Set, tested & cleared using xxx_bit() functions */
 /* Values indicated bit positions */
 #define	BNAD_RF_CEE_RUNNING		1
 #define BNAD_RF_HW_ERROR 		2
 #define BNAD_RF_MBOX_IRQ_DISABLED	3
 #define BNAD_RF_TX_STARTED		4
 #define BNAD_RF_RX_STARTED		5
 #define BNAD_RF_DIM_TIMER_RUNNING	6
 #define BNAD_RF_STATS_TIMER_RUNNING	7

 struct bnad {
 	struct net_device 	*netdev;

 	/* Data path */
 	struct bnad_tx_info tx_info[BNAD_MAX_TXS];
 	struct bnad_rx_info rx_info[BNAD_MAX_RXS];

 	struct vlan_group	*vlan_grp;
 	/*
 	 * These q numbers are global only because
 	 * they are used to calculate MSIx vectors.
 	 * Actually the exact # of queues are per Tx/Rx
 	 * object.
 	 */
 	u32		num_tx;
 	u32		num_rx;
 	u32		num_txq_per_tx;
 	u32		num_rxp_per_rx;

 	u32		txq_depth;
 	u32		rxq_depth;

 	u8			tx_coalescing_timeo;
 	u8			rx_coalescing_timeo;

 	struct bna_rx_config rx_config[BNAD_MAX_RXS];
 	struct bna_tx_config tx_config[BNAD_MAX_TXS];

 	u32		rx_csum;

 	void __iomem		*bar0;	/* BAR0 address */

 	struct bna bna;

 	u32		cfg_flags;
 	unsigned long		run_flags;

 	struct pci_dev 		*pcidev;
 	u64		mmio_start;
 	u64		mmio_len;

 	u32		msix_num;
 	struct msix_entry	*msix_table;

 	struct mutex		conf_mutex;
 	spinlock_t		bna_lock ____cacheline_aligned;

 	/* Timers */
 	struct timer_list	ioc_timer;
 	struct timer_list	dim_timer;
 	struct timer_list	stats_timer;

 	/* Control path resources, memory & irq */
 	struct bna_res_info res_info[BNA_RES_T_MAX];
 	struct bnad_tx_res_info tx_res_info[BNAD_MAX_TXS];
 	struct bnad_rx_res_info rx_res_info[BNAD_MAX_RXS];

 	struct bnad_completion bnad_completions;

 	/* Burnt in MAC address */
 	mac_t			perm_addr;

 	struct tasklet_struct	tx_free_tasklet;

 	/* Statistics */
 	struct bnad_stats stats;

 	struct bnad_diag *diag;

 	char			adapter_name[BNAD_NAME_LEN];
 	char 			port_name[BNAD_NAME_LEN];
 	char			mbox_irq_name[BNAD_NAME_LEN];
 };

 /*
  * EXTERN VARIABLES
  */
 extern struct firmware *bfi_fw;
 extern u32 		bnad_rxqs_per_cq;

 /*
  * EXTERN PROTOTYPES
  */
 extern u32 *cna_get_firmware_buf(struct pci_dev *pdev);
 /* Netdev entry point prototypes */
 extern void bnad_set_ethtool_ops(struct net_device *netdev);

 /* Configuration & setup */
 extern void bnad_tx_coalescing_timeo_set(struct bnad *bnad);
 extern void bnad_rx_coalescing_timeo_set(struct bnad *bnad);

 extern int bnad_setup_rx(struct bnad *bnad, uint rx_id);
 extern int bnad_setup_tx(struct bnad *bnad, uint tx_id);
 extern void bnad_cleanup_tx(struct bnad *bnad, uint tx_id);
 extern void bnad_cleanup_rx(struct bnad *bnad, uint rx_id);

 /* Timer start/stop protos */
 extern void bnad_dim_timer_start(struct bnad *bnad);

 /* Statistics */
 extern void bnad_netdev_qstats_fill(struct bnad *bnad, struct rtnl_link_stats64 *stats);
 extern void bnad_netdev_hwstats_fill(struct bnad *bnad, struct rtnl_link_stats64 *stats);

 /**
  * MACROS
  */
 /* To set & get the stats counters */
 #define BNAD_UPDATE_CTR(_bnad, _ctr)				\
 				(((_bnad)->stats.drv_stats._ctr)++)

 #define BNAD_GET_CTR(_bnad, _ctr) ((_bnad)->stats.drv_stats._ctr)

 #define bnad_enable_rx_irq_unsafe(_ccb)			\
 {							\
 	bna_ib_coalescing_timer_set((_ccb)->i_dbell,	\
 		(_ccb)->rx_coalescing_timeo);		\
 	bna_ib_ack((_ccb)->i_dbell, 0);			\
 }

 #define bnad_dim_timer_running(_bnad)				\
 	(((_bnad)->cfg_flags & BNAD_CF_DIM_ENABLED) && 		\
 	(test_bit(BNAD_RF_DIM_TIMER_RUNNING, &((_bnad)->run_flags))))

 #endif /* __BNAD_H__ */
	/*
	* Linux network driver for Brocade Converged Network Adapter.
	*
	* This program is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License (GPL) Version 2 as
	* published by the Free Software Foundation
	*
	* 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. See the GNU
	* General Public License for more details.
	*/
	/*
	* Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
	* All rights reserved
	* www.brocade.com
	*/
	#ifndef __BNAD_H__
	#define __BNAD_H__

	#include <linux/rtnetlink.h>
	#include <linux/workqueue.h>
	#include <linux/ipv6.h>
	#include <linux/etherdevice.h>
	#include <linux/mutex.h>
	#include <linux/firmware.h>

	/* Fix for IA64 */
	#include <asm/checksum.h>
	#include <net/ip6_checksum.h>

	#include <net/ip.h>
	#include <net/tcp.h>

	#include "bna.h"

	#define BNAD_TXQ_DEPTH 2048
	#define BNAD_RXQ_DEPTH 2048

	#define BNAD_MAX_TXS 1
	#define BNAD_MAX_TXQ_PER_TX 8 /* 8 priority queues */
	#define BNAD_TXQ_NUM 1

	#define BNAD_MAX_RXS 1
	#define BNAD_MAX_RXPS_PER_RX 16

	/*
	* Control structure pointed to ccb->ctrl, which
	* determines the NAPI / LRO behavior CCB
	* There is 1:1 corres. between ccb & ctrl
	*/
	struct bnad_rx_ctrl {
	struct bna_ccb *ccb;
	struct napi_struct napi;
	};

	#define BNAD_RXMODE_PROMISC_DEFAULT BNA_RXMODE_PROMISC

	#define BNAD_GET_TX_ID(_skb) (0)

	/*
	* GLOBAL #defines (CONSTANTS)
	*/
	#define BNAD_NAME "bna"
	#define BNAD_NAME_LEN 64

	#define BNAD_VERSION "2.3.2.0"

	#define BNAD_MAILBOX_MSIX_VECTORS 1

	#define BNAD_STATS_TIMER_FREQ 1000 /* in msecs */
	#define BNAD_DIM_TIMER_FREQ 1000 /* in msecs */

	#define BNAD_MAX_Q_DEPTH 0x10000
	#define BNAD_MIN_Q_DEPTH 0x200

	#define BNAD_JUMBO_MTU 9000

	#define BNAD_NETIF_WAKE_THRESHOLD 8

	#define BNAD_RXQ_REFILL_THRESHOLD_SHIFT 3

	/* Bit positions for tcb->flags */
	#define BNAD_TXQ_FREE_SENT 0

	/* Bit positions for rcb->flags */
	#define BNAD_RXQ_REFILL 0
	#define BNAD_RXQ_STARTED 1

	/*
	* DATA STRUCTURES
	*/

	/* enums */
	enum bnad_intr_source {
	BNAD_INTR_TX = 1,
	BNAD_INTR_RX = 2
	};

	enum bnad_link_state {
	BNAD_LS_DOWN = 0,
	BNAD_LS_UP = 1
	};

	struct bnad_completion {
	struct completion ioc_comp;
	struct completion ucast_comp;
	struct completion mcast_comp;
	struct completion tx_comp;
	struct completion rx_comp;
	struct completion stats_comp;
	struct completion port_comp;

	u8 ioc_comp_status;
	u8 ucast_comp_status;
	u8 mcast_comp_status;
	u8 tx_comp_status;
	u8 rx_comp_status;
	u8 stats_comp_status;
	u8 port_comp_status;
	};

	/* Tx Rx Control Stats */
	struct bnad_drv_stats {
	u64 netif_queue_stop;
	u64 netif_queue_wakeup;
	u64 tso4;
	u64 tso6;
	u64 tso_err;
	u64 tcpcsum_offload;
	u64 udpcsum_offload;
	u64 csum_help;
	u64 csum_help_err;

	u64 hw_stats_updates;
	u64 netif_rx_schedule;
	u64 netif_rx_complete;
	u64 netif_rx_dropped;

	u64 link_toggle;
	u64 cee_up;

	u64 rxp_info_alloc_failed;
	u64 mbox_intr_disabled;
	u64 mbox_intr_enabled;
	u64 tx_unmap_q_alloc_failed;
	u64 rx_unmap_q_alloc_failed;

	u64 rxbuf_alloc_failed;
	};

	/* Complete driver stats */
	struct bnad_stats {
	struct bnad_drv_stats drv_stats;
	struct bna_stats *bna_stats;
	};

	/* Tx / Rx Resources */
	struct bnad_tx_res_info {
	struct bna_res_info res_info[BNA_TX_RES_T_MAX];
	};

	struct bnad_rx_res_info {
	struct bna_res_info res_info[BNA_RX_RES_T_MAX];
	};

	struct bnad_tx_info {
	struct bna_tx tx; / 1:1 between tx_info & tx */
	struct bna_tcb *tcb[BNAD_MAX_TXQ_PER_TX];
	} ____cacheline_aligned;

	struct bnad_rx_info {
	struct bna_rx rx; / 1:1 between rx_info & rx */

	struct bnad_rx_ctrl rx_ctrl[BNAD_MAX_RXPS_PER_RX];
	} ____cacheline_aligned;

	/* Unmap queues for Tx / Rx cleanup */
	struct bnad_skb_unmap {
	struct sk_buff *skb;
	DECLARE_PCI_UNMAP_ADDR(dma_addr)
	};

	struct bnad_unmap_q {
	u32 producer_index;
	u32 consumer_index;
	u32 q_depth;
	/* This should be the last one */
	struct bnad_skb_unmap unmap_array[1];
	};

	/* Bit mask values for bnad->cfg_flags */
	#define BNAD_CF_DIM_ENABLED 0x01 /* DIM */
	#define BNAD_CF_PROMISC 0x02
	#define BNAD_CF_ALLMULTI 0x04
	#define BNAD_CF_MSIX 0x08 /* If in MSIx mode */

	/* Defines for run_flags bit-mask */
	/* Set, tested & cleared using xxx_bit() functions */
	/* Values indicated bit positions */
	#define BNAD_RF_CEE_RUNNING 1
	#define BNAD_RF_HW_ERROR 2
	#define BNAD_RF_MBOX_IRQ_DISABLED 3
	#define BNAD_RF_TX_STARTED 4
	#define BNAD_RF_RX_STARTED 5
	#define BNAD_RF_DIM_TIMER_RUNNING 6
	#define BNAD_RF_STATS_TIMER_RUNNING 7

	struct bnad {
	struct net_device *netdev;

	/* Data path */
	struct bnad_tx_info tx_info[BNAD_MAX_TXS];
	struct bnad_rx_info rx_info[BNAD_MAX_RXS];

	struct vlan_group *vlan_grp;
	/*
	* These q numbers are global only because
	* they are used to calculate MSIx vectors.
	* Actually the exact # of queues are per Tx/Rx
	* object.
	*/
	u32 num_tx;
	u32 num_rx;
	u32 num_txq_per_tx;
	u32 num_rxp_per_rx;

	u32 txq_depth;
	u32 rxq_depth;

	u8 tx_coalescing_timeo;
	u8 rx_coalescing_timeo;

	struct bna_rx_config rx_config[BNAD_MAX_RXS];
	struct bna_tx_config tx_config[BNAD_MAX_TXS];

	u32 rx_csum;

	void __iomem bar0; / BAR0 address */

	struct bna bna;

	u32 cfg_flags;
	unsigned long run_flags;

	struct pci_dev *pcidev;
	u64 mmio_start;
	u64 mmio_len;

	u32 msix_num;
	struct msix_entry *msix_table;

	struct mutex conf_mutex;
	spinlock_t bna_lock ____cacheline_aligned;

	/* Timers */
	struct timer_list ioc_timer;
	struct timer_list dim_timer;
	struct timer_list stats_timer;

	/* Control path resources, memory & irq */
	struct bna_res_info res_info[BNA_RES_T_MAX];
	struct bnad_tx_res_info tx_res_info[BNAD_MAX_TXS];
	struct bnad_rx_res_info rx_res_info[BNAD_MAX_RXS];

	struct bnad_completion bnad_completions;

	/* Burnt in MAC address */
	mac_t perm_addr;

	struct tasklet_struct tx_free_tasklet;

	/* Statistics */
	struct bnad_stats stats;

	struct bnad_diag *diag;

	char adapter_name[BNAD_NAME_LEN];
	char port_name[BNAD_NAME_LEN];
	char mbox_irq_name[BNAD_NAME_LEN];
	};

	/*
	* EXTERN VARIABLES
	*/
	extern struct firmware *bfi_fw;
	extern u32 bnad_rxqs_per_cq;

	/*
	* EXTERN PROTOTYPES
	*/
	extern u32 cna_get_firmware_buf(struct pci_dev pdev);
	/* Netdev entry point prototypes */
	extern void bnad_set_ethtool_ops(struct net_device *netdev);

	/* Configuration & setup */
	extern void bnad_tx_coalescing_timeo_set(struct bnad *bnad);
	extern void bnad_rx_coalescing_timeo_set(struct bnad *bnad);

	extern int bnad_setup_rx(struct bnad *bnad, uint rx_id);
	extern int bnad_setup_tx(struct bnad *bnad, uint tx_id);
	extern void bnad_cleanup_tx(struct bnad *bnad, uint tx_id);
	extern void bnad_cleanup_rx(struct bnad *bnad, uint rx_id);

	/* Timer start/stop protos */
	extern void bnad_dim_timer_start(struct bnad *bnad);

	/* Statistics */
	extern void bnad_netdev_qstats_fill(struct bnad bnad, struct rtnl_link_stats64 stats);
	extern void bnad_netdev_hwstats_fill(struct bnad bnad, struct rtnl_link_stats64 stats);

	/**
	* MACROS
	*/
	/* To set & get the stats counters */
	#define BNAD_UPDATE_CTR(_bnad, _ctr) \
	(((_bnad)->stats.drv_stats._ctr)++)

	#define BNAD_GET_CTR(_bnad, _ctr) ((_bnad)->stats.drv_stats._ctr)

	#define bnad_enable_rx_irq_unsafe(_ccb) \
	{ \
	bna_ib_coalescing_timer_set((_ccb)->i_dbell, \
	(_ccb)->rx_coalescing_timeo); \
	bna_ib_ack((_ccb)->i_dbell, 0); \
	}

	#define bnad_dim_timer_running(_bnad) \
	(((_bnad)->cfg_flags & BNAD_CF_DIM_ENABLED) && \
	(test_bit(BNAD_RF_DIM_TIMER_RUNNING, &((_bnad)->run_flags))))

	#endif /* __BNAD_H__ */