drivers/net/bna/bna.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.
 */
#ifndef __BNA_H__
#define __BNA_H__

#include "bfa_wc.h"
#include "bfa_ioc.h"
#include "cna.h"
#include "bfi_ll.h"
#include "bna_types.h"

extern const u32 bna_napi_dim_vector[][BNA_BIAS_T_MAX];

/**
 *
 *  Macros and constants
 *
 */

#define BNA_IOC_TIMER_FREQ		200

/* Log string size */
#define BNA_MESSAGE_SIZE		256

/* MBOX API for PORT, TX, RX */
#define bna_mbox_qe_fill(_qe, _cmd, _cmd_len, _cbfn, _cbarg)		\
do {									\
	memcpy(&((_qe)->cmd.msg[0]), (_cmd), (_cmd_len));	\
	(_qe)->cbfn = (_cbfn);						\
	(_qe)->cbarg = (_cbarg);					\
} while (0)

#define bna_is_small_rxq(rcb) ((rcb)->id == 1)

#define BNA_MAC_IS_EQUAL(_mac1, _mac2)					\
	(!memcmp((_mac1), (_mac2), sizeof(mac_t)))

#define BNA_POWER_OF_2(x) (((x) & ((x) - 1)) == 0)

#define BNA_TO_POWER_OF_2(x)						\
do {									\
	int _shift = 0;							\
	while ((x) && (x) != 1) {					\
		(x) >>= 1;						\
		_shift++;						\
	}								\
	(x) <<= _shift;							\
} while (0)

#define BNA_TO_POWER_OF_2_HIGH(x)					\
do {									\
	int n = 1;							\
	while (n < (x))							\
		n <<= 1;						\
	(x) = n;							\
} while (0)

/*
 * input : _addr-> os dma addr in host endian format,
 * output : _bna_dma_addr-> pointer to hw dma addr
 */
#define BNA_SET_DMA_ADDR(_addr, _bna_dma_addr)				\
do {									\
	u64 tmp_addr =						\
	cpu_to_be64((u64)(_addr));				\
	(_bna_dma_addr)->msb = ((struct bna_dma_addr *)&tmp_addr)->msb; \
	(_bna_dma_addr)->lsb = ((struct bna_dma_addr *)&tmp_addr)->lsb; \
} while (0)

/*
 * input : _bna_dma_addr-> pointer to hw dma addr
 * output : _addr-> os dma addr in host endian format
 */
#define BNA_GET_DMA_ADDR(_bna_dma_addr, _addr)			\
do {								\
	(_addr) = ((((u64)ntohl((_bna_dma_addr)->msb))) << 32)		\
	| ((ntohl((_bna_dma_addr)->lsb) & 0xffffffff));	\
} while (0)

#define	containing_rec(addr, type, field)				\
	((type *)((unsigned char *)(addr) - 				\
	(unsigned char *)(&((type *)0)->field)))

#define BNA_TXQ_WI_NEEDED(_vectors)	(((_vectors) + 3) >> 2)

/* TxQ element is 64 bytes */
#define BNA_TXQ_PAGE_INDEX_MAX		(PAGE_SIZE >> 6)
#define BNA_TXQ_PAGE_INDEX_MAX_SHIFT	(PAGE_SHIFT - 6)

#define BNA_TXQ_QPGE_PTR_GET(_qe_idx, _qpt_ptr, _qe_ptr, _qe_ptr_range) \
{									\
	unsigned int page_index;	/* index within a page */	\
	void *page_addr;						\
	page_index = (_qe_idx) & (BNA_TXQ_PAGE_INDEX_MAX - 1); 		\
	(_qe_ptr_range) = (BNA_TXQ_PAGE_INDEX_MAX - page_index); 	\
	page_addr = (_qpt_ptr)[((_qe_idx) >>  BNA_TXQ_PAGE_INDEX_MAX_SHIFT)];\
	(_qe_ptr) = &((struct bna_txq_entry *)(page_addr))[page_index]; \
}

/* RxQ element is 8 bytes */
#define BNA_RXQ_PAGE_INDEX_MAX		(PAGE_SIZE >> 3)
#define BNA_RXQ_PAGE_INDEX_MAX_SHIFT	(PAGE_SHIFT - 3)

#define BNA_RXQ_QPGE_PTR_GET(_qe_idx, _qpt_ptr, _qe_ptr, _qe_ptr_range) \
{									\
	unsigned int page_index;	/* index within a page */	\
	void *page_addr;						\
	page_index = (_qe_idx) & (BNA_RXQ_PAGE_INDEX_MAX - 1);		\
	(_qe_ptr_range) = (BNA_RXQ_PAGE_INDEX_MAX - page_index);	\
	page_addr = (_qpt_ptr)[((_qe_idx) >>				\
				BNA_RXQ_PAGE_INDEX_MAX_SHIFT)];		\
	(_qe_ptr) = &((struct bna_rxq_entry *)(page_addr))[page_index]; \
}

/* CQ element is 16 bytes */
#define BNA_CQ_PAGE_INDEX_MAX		(PAGE_SIZE >> 4)
#define BNA_CQ_PAGE_INDEX_MAX_SHIFT	(PAGE_SHIFT - 4)

#define BNA_CQ_QPGE_PTR_GET(_qe_idx, _qpt_ptr, _qe_ptr, _qe_ptr_range)	\
{									\
	unsigned int page_index;	  /* index within a page */	\
	void *page_addr;						\
									\
	page_index = (_qe_idx) & (BNA_CQ_PAGE_INDEX_MAX - 1);		\
	(_qe_ptr_range) = (BNA_CQ_PAGE_INDEX_MAX - page_index);		\
	page_addr = (_qpt_ptr)[((_qe_idx) >>				\
				    BNA_CQ_PAGE_INDEX_MAX_SHIFT)];	\
	(_qe_ptr) = &((struct bna_cq_entry *)(page_addr))[page_index];\
}

#define BNA_QE_INDX_2_PTR(_cast, _qe_idx, _q_base)			\
	(&((_cast *)(_q_base))[(_qe_idx)])

#define BNA_QE_INDX_RANGE(_qe_idx, _q_depth) ((_q_depth) - (_qe_idx))

#define BNA_QE_INDX_ADD(_qe_idx, _qe_num, _q_depth)			\
	((_qe_idx) = ((_qe_idx) + (_qe_num)) & ((_q_depth) - 1))

#define BNA_Q_INDEX_CHANGE(_old_idx, _updated_idx, _q_depth)		\
	(((_updated_idx) - (_old_idx)) & ((_q_depth) - 1))

#define BNA_QE_FREE_CNT(_q_ptr, _q_depth)				\
	(((_q_ptr)->consumer_index - (_q_ptr)->producer_index - 1) &	\
	 ((_q_depth) - 1))

#define BNA_QE_IN_USE_CNT(_q_ptr, _q_depth)				\
	((((_q_ptr)->producer_index - (_q_ptr)->consumer_index)) &	\
	 (_q_depth - 1))

#define BNA_Q_GET_CI(_q_ptr)		((_q_ptr)->q.consumer_index)

#define BNA_Q_GET_PI(_q_ptr)		((_q_ptr)->q.producer_index)

#define BNA_Q_PI_ADD(_q_ptr, _num)					\
	(_q_ptr)->q.producer_index =					\
		(((_q_ptr)->q.producer_index + (_num)) &		\
		((_q_ptr)->q.q_depth - 1))

#define BNA_Q_CI_ADD(_q_ptr, _num) 					\
	(_q_ptr)->q.consumer_index =					\
		(((_q_ptr)->q.consumer_index + (_num))  		\
		& ((_q_ptr)->q.q_depth - 1))

#define BNA_Q_FREE_COUNT(_q_ptr)					\
	(BNA_QE_FREE_CNT(&((_q_ptr)->q), (_q_ptr)->q.q_depth))

#define BNA_Q_IN_USE_COUNT(_q_ptr)  					\
	(BNA_QE_IN_USE_CNT(&(_q_ptr)->q, (_q_ptr)->q.q_depth))

/* These macros build the data portion of the TxQ/RxQ doorbell */
#define BNA_DOORBELL_Q_PRD_IDX(_pi) 	(0x80000000 | (_pi))
#define BNA_DOORBELL_Q_STOP		(0x40000000)

/* These macros build the data portion of the IB doorbell */
#define BNA_DOORBELL_IB_INT_ACK(_timeout, _events) \
	(0x80000000 | ((_timeout) << 16) | (_events))
#define BNA_DOORBELL_IB_INT_DISABLE 	(0x40000000)

/* Set the coalescing timer for the given ib */
#define bna_ib_coalescing_timer_set(_i_dbell, _cls_timer)		\
	((_i_dbell)->doorbell_ack = BNA_DOORBELL_IB_INT_ACK((_cls_timer), 0));

/* Acks 'events' # of events for a given ib */
#define bna_ib_ack(_i_dbell, _events)					\
	(writel(((_i_dbell)->doorbell_ack | (_events)), \
		(_i_dbell)->doorbell_addr));

#define bna_txq_prod_indx_doorbell(_tcb)				\
	(writel(BNA_DOORBELL_Q_PRD_IDX((_tcb)->producer_index), \
		(_tcb)->q_dbell));

#define bna_rxq_prod_indx_doorbell(_rcb)				\
	(writel(BNA_DOORBELL_Q_PRD_IDX((_rcb)->producer_index), \
		(_rcb)->q_dbell));

#define BNA_LARGE_PKT_SIZE		1000

#define BNA_UPDATE_PKT_CNT(_pkt, _len)					\
do {									\
	if ((_len) > BNA_LARGE_PKT_SIZE) {				\
		(_pkt)->large_pkt_cnt++;				\
	} else {							\
		(_pkt)->small_pkt_cnt++;				\
	}								\
} while (0)

#define	call_rxf_stop_cbfn(rxf, status)					\
	if ((rxf)->stop_cbfn) {						\
		(*(rxf)->stop_cbfn)((rxf)->stop_cbarg, (status));	\
		(rxf)->stop_cbfn = NULL;				\
		(rxf)->stop_cbarg = NULL;				\
	}

#define	call_rxf_start_cbfn(rxf, status)				\
	if ((rxf)->start_cbfn) {					\
		(*(rxf)->start_cbfn)((rxf)->start_cbarg, (status));	\
		(rxf)->start_cbfn = NULL;				\
		(rxf)->start_cbarg = NULL;				\
	}

#define	call_rxf_cam_fltr_cbfn(rxf, status)				\
	if ((rxf)->cam_fltr_cbfn) {					\
		(*(rxf)->cam_fltr_cbfn)((rxf)->cam_fltr_cbarg, rxf->rx,	\
					(status));			\
		(rxf)->cam_fltr_cbfn = NULL;				\
		(rxf)->cam_fltr_cbarg = NULL;				\
	}

#define	call_rxf_pause_cbfn(rxf, status)				\
	if ((rxf)->oper_state_cbfn) {					\
		(*(rxf)->oper_state_cbfn)((rxf)->oper_state_cbarg, rxf->rx,\
					(status));			\
		(rxf)->rxf_flags &= ~BNA_RXF_FL_OPERSTATE_CHANGED;	\
		(rxf)->oper_state_cbfn = NULL;				\
		(rxf)->oper_state_cbarg = NULL;				\
	}

#define	call_rxf_resume_cbfn(rxf, status) call_rxf_pause_cbfn(rxf, status)

#define is_xxx_enable(mode, bitmask, xxx) ((bitmask & xxx) && (mode & xxx))

#define is_xxx_disable(mode, bitmask, xxx) ((bitmask & xxx) && !(mode & xxx))

#define xxx_enable(mode, bitmask, xxx)					\
do {									\
	bitmask |= xxx;							\
	mode |= xxx;							\
} while (0)

#define xxx_disable(mode, bitmask, xxx)					\
do {									\
	bitmask |= xxx;							\
	mode &= ~xxx;							\
} while (0)

#define xxx_inactive(mode, bitmask, xxx)				\
do {									\
	bitmask &= ~xxx;						\
	mode &= ~xxx;							\
} while (0)

#define is_promisc_enable(mode, bitmask)				\
	is_xxx_enable(mode, bitmask, BNA_RXMODE_PROMISC)

#define is_promisc_disable(mode, bitmask)				\
	is_xxx_disable(mode, bitmask, BNA_RXMODE_PROMISC)

#define promisc_enable(mode, bitmask)					\
	xxx_enable(mode, bitmask, BNA_RXMODE_PROMISC)

#define promisc_disable(mode, bitmask)					\
	xxx_disable(mode, bitmask, BNA_RXMODE_PROMISC)

#define promisc_inactive(mode, bitmask)					\
	xxx_inactive(mode, bitmask, BNA_RXMODE_PROMISC)

#define is_default_enable(mode, bitmask)				\
	is_xxx_enable(mode, bitmask, BNA_RXMODE_DEFAULT)

#define is_default_disable(mode, bitmask)				\
	is_xxx_disable(mode, bitmask, BNA_RXMODE_DEFAULT)

#define default_enable(mode, bitmask)					\
	xxx_enable(mode, bitmask, BNA_RXMODE_DEFAULT)

#define default_disable(mode, bitmask)					\
	xxx_disable(mode, bitmask, BNA_RXMODE_DEFAULT)

#define default_inactive(mode, bitmask)					\
	xxx_inactive(mode, bitmask, BNA_RXMODE_DEFAULT)

#define is_allmulti_enable(mode, bitmask)				\
	is_xxx_enable(mode, bitmask, BNA_RXMODE_ALLMULTI)

#define is_allmulti_disable(mode, bitmask)				\
	is_xxx_disable(mode, bitmask, BNA_RXMODE_ALLMULTI)

#define allmulti_enable(mode, bitmask)					\
	xxx_enable(mode, bitmask, BNA_RXMODE_ALLMULTI)

#define allmulti_disable(mode, bitmask)					\
	xxx_disable(mode, bitmask, BNA_RXMODE_ALLMULTI)

#define allmulti_inactive(mode, bitmask)				\
	xxx_inactive(mode, bitmask, BNA_RXMODE_ALLMULTI)

#define	GET_RXQS(rxp, q0, q1)	do {					\
	switch ((rxp)->type) {						\
	case BNA_RXP_SINGLE:						\
		(q0) = rxp->rxq.single.only;				\
		(q1) = NULL;						\
		break;							\
	case BNA_RXP_SLR:						\
		(q0) = rxp->rxq.slr.large;				\
		(q1) = rxp->rxq.slr.small;				\
		break;							\
	case BNA_RXP_HDS:						\
		(q0) = rxp->rxq.hds.data;				\
		(q1) = rxp->rxq.hds.hdr;				\
		break;							\
	}								\
} while (0)

/**
 *
 * Function prototypes
 *
 */

/**
 * BNA
 */

/* APIs for BNAD */
void bna_res_req(struct bna_res_info *res_info);
void bna_init(struct bna *bna, struct bnad *bnad,
			struct bfa_pcidev *pcidev,
			struct bna_res_info *res_info);
void bna_uninit(struct bna *bna);
void bna_stats_get(struct bna *bna);
void bna_get_perm_mac(struct bna *bna, u8 *mac);

/* APIs for Rx */
int bna_rit_mod_can_satisfy(struct bna_rit_mod *rit_mod, int seg_size);

/* APIs for RxF */
struct bna_mac *bna_ucam_mod_mac_get(struct bna_ucam_mod *ucam_mod);
void bna_ucam_mod_mac_put(struct bna_ucam_mod *ucam_mod,
			  struct bna_mac *mac);
struct bna_mac *bna_mcam_mod_mac_get(struct bna_mcam_mod *mcam_mod);
void bna_mcam_mod_mac_put(struct bna_mcam_mod *mcam_mod,
			  struct bna_mac *mac);
struct bna_rit_segment *
bna_rit_mod_seg_get(struct bna_rit_mod *rit_mod, int seg_size);
void bna_rit_mod_seg_put(struct bna_rit_mod *rit_mod,
			struct bna_rit_segment *seg);

/**
 * DEVICE
 */

/* APIs for BNAD */
void bna_device_enable(struct bna_device *device);
void bna_device_disable(struct bna_device *device,
			enum bna_cleanup_type type);

/**
 * MBOX
 */

/* APIs for PORT, TX, RX */
void bna_mbox_handler(struct bna *bna, u32 intr_status);
void bna_mbox_send(struct bna *bna, struct bna_mbox_qe *mbox_qe);

/**
 * PORT
 */

/* API for RX */
int bna_port_mtu_get(struct bna_port *port);
void bna_llport_rx_started(struct bna_llport *llport);
void bna_llport_rx_stopped(struct bna_llport *llport);

/* API for BNAD */
void bna_port_enable(struct bna_port *port);
void bna_port_disable(struct bna_port *port, enum bna_cleanup_type type,
		      void (*cbfn)(void *, enum bna_cb_status));
void bna_port_pause_config(struct bna_port *port,
			   struct bna_pause_config *pause_config,
			   void (*cbfn)(struct bnad *, enum bna_cb_status));
void bna_port_mtu_set(struct bna_port *port, int mtu,
		      void (*cbfn)(struct bnad *, enum bna_cb_status));
void bna_port_mac_get(struct bna_port *port, mac_t *mac);

/* Callbacks for TX, RX */
void bna_port_cb_tx_stopped(struct bna_port *port,
			    enum bna_cb_status status);
void bna_port_cb_rx_stopped(struct bna_port *port,
			    enum bna_cb_status status);

/**
 * IB
 */

/* APIs for BNA */
void bna_ib_mod_init(struct bna_ib_mod *ib_mod, struct bna *bna,
		     struct bna_res_info *res_info);
void bna_ib_mod_uninit(struct bna_ib_mod *ib_mod);

/**
 * TX MODULE AND TX
 */

/* APIs for BNA */
void bna_tx_mod_init(struct bna_tx_mod *tx_mod, struct bna *bna,
		     struct bna_res_info *res_info);
void bna_tx_mod_uninit(struct bna_tx_mod *tx_mod);
int bna_tx_state_get(struct bna_tx *tx);

/* APIs for PORT */
void bna_tx_mod_start(struct bna_tx_mod *tx_mod, enum bna_tx_type type);
void bna_tx_mod_stop(struct bna_tx_mod *tx_mod, enum bna_tx_type type);
void bna_tx_mod_fail(struct bna_tx_mod *tx_mod);
void bna_tx_mod_prio_changed(struct bna_tx_mod *tx_mod, int prio);
void bna_tx_mod_cee_link_status(struct bna_tx_mod *tx_mod, int cee_link);

/* APIs for BNAD */
void bna_tx_res_req(int num_txq, int txq_depth,
		    struct bna_res_info *res_info);
struct bna_tx *bna_tx_create(struct bna *bna, struct bnad *bnad,
			       struct bna_tx_config *tx_cfg,
			       struct bna_tx_event_cbfn *tx_cbfn,
			       struct bna_res_info *res_info, void *priv);
void bna_tx_destroy(struct bna_tx *tx);
void bna_tx_enable(struct bna_tx *tx);
void bna_tx_disable(struct bna_tx *tx, enum bna_cleanup_type type,
		    void (*cbfn)(void *, struct bna_tx *,
				 enum bna_cb_status));
void bna_tx_coalescing_timeo_set(struct bna_tx *tx, int coalescing_timeo);

/**
 * RX MODULE, RX, RXF
 */

/* Internal APIs */
void rxf_cb_cam_fltr_mbox_cmd(void *arg, int status);
void rxf_cam_mbox_cmd(struct bna_rxf *rxf, u8 cmd,
		const struct bna_mac *mac_addr);
void __rxf_vlan_filter_set(struct bna_rxf *rxf, enum bna_status status);
void bna_rxf_adv_init(struct bna_rxf *rxf,
		struct bna_rx *rx,
		struct bna_rx_config *q_config);
int rxf_process_packet_filter_ucast(struct bna_rxf *rxf);
int rxf_process_packet_filter_promisc(struct bna_rxf *rxf);
int rxf_process_packet_filter_default(struct bna_rxf *rxf);
int rxf_process_packet_filter_allmulti(struct bna_rxf *rxf);
int rxf_clear_packet_filter_ucast(struct bna_rxf *rxf);
int rxf_clear_packet_filter_promisc(struct bna_rxf *rxf);
int rxf_clear_packet_filter_default(struct bna_rxf *rxf);
int rxf_clear_packet_filter_allmulti(struct bna_rxf *rxf);
void rxf_reset_packet_filter_ucast(struct bna_rxf *rxf);
void rxf_reset_packet_filter_promisc(struct bna_rxf *rxf);
void rxf_reset_packet_filter_default(struct bna_rxf *rxf);
void rxf_reset_packet_filter_allmulti(struct bna_rxf *rxf);

/* APIs for BNA */
void bna_rx_mod_init(struct bna_rx_mod *rx_mod, struct bna *bna,
		     struct bna_res_info *res_info);
void bna_rx_mod_uninit(struct bna_rx_mod *rx_mod);
int bna_rx_state_get(struct bna_rx *rx);
int bna_rxf_state_get(struct bna_rxf *rxf);

/* APIs for PORT */
void bna_rx_mod_start(struct bna_rx_mod *rx_mod, enum bna_rx_type type);
void bna_rx_mod_stop(struct bna_rx_mod *rx_mod, enum bna_rx_type type);
void bna_rx_mod_fail(struct bna_rx_mod *rx_mod);

/* APIs for BNAD */
void bna_rx_res_req(struct bna_rx_config *rx_config,
		    struct bna_res_info *res_info);
struct bna_rx *bna_rx_create(struct bna *bna, struct bnad *bnad,
			       struct bna_rx_config *rx_cfg,
			       struct bna_rx_event_cbfn *rx_cbfn,
			       struct bna_res_info *res_info, void *priv);
void bna_rx_destroy(struct bna_rx *rx);
void bna_rx_enable(struct bna_rx *rx);
void bna_rx_disable(struct bna_rx *rx, enum bna_cleanup_type type,
		    void (*cbfn)(void *, struct bna_rx *,
				 enum bna_cb_status));
void bna_rx_coalescing_timeo_set(struct bna_rx *rx, int coalescing_timeo);
void bna_rx_dim_reconfig(struct bna *bna, const u32 vector[][BNA_BIAS_T_MAX]);
void bna_rx_dim_update(struct bna_ccb *ccb);
enum bna_cb_status
bna_rx_ucast_set(struct bna_rx *rx, u8 *ucmac,
		 void (*cbfn)(struct bnad *, struct bna_rx *,
			      enum bna_cb_status));
enum bna_cb_status
bna_rx_mcast_add(struct bna_rx *rx, u8 *mcmac,
		 void (*cbfn)(struct bnad *, struct bna_rx *,
			      enum bna_cb_status));
enum bna_cb_status
bna_rx_mcast_listset(struct bna_rx *rx, int count, u8 *mcmac,
		     void (*cbfn)(struct bnad *, struct bna_rx *,
				  enum bna_cb_status));
enum bna_cb_status
bna_rx_mode_set(struct bna_rx *rx, enum bna_rxmode rxmode,
		enum bna_rxmode bitmask,
		void (*cbfn)(struct bnad *, struct bna_rx *,
			     enum bna_cb_status));
void bna_rx_vlan_add(struct bna_rx *rx, int vlan_id);
void bna_rx_vlan_del(struct bna_rx *rx, int vlan_id);
void bna_rx_vlanfilter_enable(struct bna_rx *rx);
void bna_rx_hds_enable(struct bna_rx *rx, struct bna_rxf_hds *hds_config,
		       void (*cbfn)(struct bnad *, struct bna_rx *,
				    enum bna_cb_status));
void bna_rx_hds_disable(struct bna_rx *rx,
			void (*cbfn)(struct bnad *, struct bna_rx *,
				     enum bna_cb_status));

/**
 * BNAD
 */

/* Callbacks for BNA */
void bnad_cb_stats_get(struct bnad *bnad, enum bna_cb_status status,
		       struct bna_stats *stats);

/* Callbacks for DEVICE */
void bnad_cb_device_enabled(struct bnad *bnad, enum bna_cb_status status);
void bnad_cb_device_disabled(struct bnad *bnad, enum bna_cb_status status);
void bnad_cb_device_enable_mbox_intr(struct bnad *bnad);
void bnad_cb_device_disable_mbox_intr(struct bnad *bnad);

/* Callbacks for port */
void bnad_cb_port_link_status(struct bnad *bnad,
			      enum bna_link_status status);

#endif  /* __BNA_H__ */