mirror of
https://github.com/torvalds/linux.git
synced 2024-11-27 22:51:35 +00:00
c3f1b123d0
- Made changes to split FCXP resources as request and response resources. - The split will reduce the contention for FCXP resources in an open zone config. Signed-off-by: Krishna Gudipati <kgudipat@brocade.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
367 lines
8.2 KiB
C
367 lines
8.2 KiB
C
/*
|
|
* Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
|
|
* All rights reserved
|
|
* www.brocade.com
|
|
*
|
|
* Linux driver for Brocade Fibre Channel Host Bus 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.
|
|
*/
|
|
|
|
/*
|
|
* bfa_cs.h BFA common services
|
|
*/
|
|
|
|
#ifndef __BFA_CS_H__
|
|
#define __BFA_CS_H__
|
|
|
|
#include "bfad_drv.h"
|
|
|
|
/*
|
|
* BFA TRC
|
|
*/
|
|
|
|
#ifndef BFA_TRC_MAX
|
|
#define BFA_TRC_MAX (4 * 1024)
|
|
#endif
|
|
|
|
#define BFA_TRC_TS(_trcm) \
|
|
({ \
|
|
struct timeval tv; \
|
|
\
|
|
do_gettimeofday(&tv); \
|
|
(tv.tv_sec*1000000+tv.tv_usec); \
|
|
})
|
|
|
|
#ifndef BFA_TRC_TS
|
|
#define BFA_TRC_TS(_trcm) ((_trcm)->ticks++)
|
|
#endif
|
|
|
|
struct bfa_trc_s {
|
|
#ifdef __BIG_ENDIAN
|
|
u16 fileno;
|
|
u16 line;
|
|
#else
|
|
u16 line;
|
|
u16 fileno;
|
|
#endif
|
|
u32 timestamp;
|
|
union {
|
|
struct {
|
|
u32 rsvd;
|
|
u32 u32;
|
|
} u32;
|
|
u64 u64;
|
|
} data;
|
|
};
|
|
|
|
struct bfa_trc_mod_s {
|
|
u32 head;
|
|
u32 tail;
|
|
u32 ntrc;
|
|
u32 stopped;
|
|
u32 ticks;
|
|
u32 rsvd[3];
|
|
struct bfa_trc_s trc[BFA_TRC_MAX];
|
|
};
|
|
|
|
enum {
|
|
BFA_TRC_HAL = 1, /* BFA modules */
|
|
BFA_TRC_FCS = 2, /* BFA FCS modules */
|
|
BFA_TRC_LDRV = 3, /* Linux driver modules */
|
|
BFA_TRC_CNA = 4, /* Common modules */
|
|
};
|
|
#define BFA_TRC_MOD_SH 10
|
|
#define BFA_TRC_MOD(__mod) ((BFA_TRC_ ## __mod) << BFA_TRC_MOD_SH)
|
|
|
|
/*
|
|
* Define a new tracing file (module). Module should match one defined above.
|
|
*/
|
|
#define BFA_TRC_FILE(__mod, __submod) \
|
|
static int __trc_fileno = ((BFA_TRC_ ## __mod ## _ ## __submod) | \
|
|
BFA_TRC_MOD(__mod))
|
|
|
|
|
|
#define bfa_trc32(_trcp, _data) \
|
|
__bfa_trc((_trcp)->trcmod, __trc_fileno, __LINE__, (u32)_data)
|
|
#define bfa_trc(_trcp, _data) \
|
|
__bfa_trc((_trcp)->trcmod, __trc_fileno, __LINE__, (u64)_data)
|
|
|
|
static inline void
|
|
bfa_trc_init(struct bfa_trc_mod_s *trcm)
|
|
{
|
|
trcm->head = trcm->tail = trcm->stopped = 0;
|
|
trcm->ntrc = BFA_TRC_MAX;
|
|
}
|
|
|
|
static inline void
|
|
bfa_trc_stop(struct bfa_trc_mod_s *trcm)
|
|
{
|
|
trcm->stopped = 1;
|
|
}
|
|
|
|
static inline void
|
|
__bfa_trc(struct bfa_trc_mod_s *trcm, int fileno, int line, u64 data)
|
|
{
|
|
int tail = trcm->tail;
|
|
struct bfa_trc_s *trc = &trcm->trc[tail];
|
|
|
|
if (trcm->stopped)
|
|
return;
|
|
|
|
trc->fileno = (u16) fileno;
|
|
trc->line = (u16) line;
|
|
trc->data.u64 = data;
|
|
trc->timestamp = BFA_TRC_TS(trcm);
|
|
|
|
trcm->tail = (trcm->tail + 1) & (BFA_TRC_MAX - 1);
|
|
if (trcm->tail == trcm->head)
|
|
trcm->head = (trcm->head + 1) & (BFA_TRC_MAX - 1);
|
|
}
|
|
|
|
|
|
static inline void
|
|
__bfa_trc32(struct bfa_trc_mod_s *trcm, int fileno, int line, u32 data)
|
|
{
|
|
int tail = trcm->tail;
|
|
struct bfa_trc_s *trc = &trcm->trc[tail];
|
|
|
|
if (trcm->stopped)
|
|
return;
|
|
|
|
trc->fileno = (u16) fileno;
|
|
trc->line = (u16) line;
|
|
trc->data.u32.u32 = data;
|
|
trc->timestamp = BFA_TRC_TS(trcm);
|
|
|
|
trcm->tail = (trcm->tail + 1) & (BFA_TRC_MAX - 1);
|
|
if (trcm->tail == trcm->head)
|
|
trcm->head = (trcm->head + 1) & (BFA_TRC_MAX - 1);
|
|
}
|
|
|
|
#define bfa_sm_fault(__mod, __event) do { \
|
|
bfa_trc(__mod, (((u32)0xDEAD << 16) | __event)); \
|
|
printk(KERN_ERR "Assertion failure: %s:%d: %d", \
|
|
__FILE__, __LINE__, (__event)); \
|
|
} while (0)
|
|
|
|
/* BFA queue definitions */
|
|
#define bfa_q_first(_q) ((void *)(((struct list_head *) (_q))->next))
|
|
#define bfa_q_next(_qe) (((struct list_head *) (_qe))->next)
|
|
#define bfa_q_prev(_qe) (((struct list_head *) (_qe))->prev)
|
|
|
|
/*
|
|
* bfa_q_qe_init - to initialize a queue element
|
|
*/
|
|
#define bfa_q_qe_init(_qe) { \
|
|
bfa_q_next(_qe) = (struct list_head *) NULL; \
|
|
bfa_q_prev(_qe) = (struct list_head *) NULL; \
|
|
}
|
|
|
|
/*
|
|
* bfa_q_deq - dequeue an element from head of the queue
|
|
*/
|
|
#define bfa_q_deq(_q, _qe) do { \
|
|
if (!list_empty(_q)) { \
|
|
(*((struct list_head **) (_qe))) = bfa_q_next(_q); \
|
|
bfa_q_prev(bfa_q_next(*((struct list_head **) _qe))) = \
|
|
(struct list_head *) (_q); \
|
|
bfa_q_next(_q) = bfa_q_next(*((struct list_head **) _qe));\
|
|
} else { \
|
|
*((struct list_head **) (_qe)) = (struct list_head *) NULL;\
|
|
} \
|
|
} while (0)
|
|
|
|
/*
|
|
* bfa_q_deq_tail - dequeue an element from tail of the queue
|
|
*/
|
|
#define bfa_q_deq_tail(_q, _qe) { \
|
|
if (!list_empty(_q)) { \
|
|
*((struct list_head **) (_qe)) = bfa_q_prev(_q); \
|
|
bfa_q_next(bfa_q_prev(*((struct list_head **) _qe))) = \
|
|
(struct list_head *) (_q); \
|
|
bfa_q_prev(_q) = bfa_q_prev(*(struct list_head **) _qe);\
|
|
} else { \
|
|
*((struct list_head **) (_qe)) = (struct list_head *) NULL;\
|
|
} \
|
|
}
|
|
|
|
static inline int
|
|
bfa_q_is_on_q_func(struct list_head *q, struct list_head *qe)
|
|
{
|
|
struct list_head *tqe;
|
|
|
|
tqe = bfa_q_next(q);
|
|
while (tqe != q) {
|
|
if (tqe == qe)
|
|
return 1;
|
|
tqe = bfa_q_next(tqe);
|
|
if (tqe == NULL)
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#define bfa_q_is_on_q(_q, _qe) \
|
|
bfa_q_is_on_q_func(_q, (struct list_head *)(_qe))
|
|
|
|
/*
|
|
* @ BFA state machine interfaces
|
|
*/
|
|
|
|
typedef void (*bfa_sm_t)(void *sm, int event);
|
|
|
|
/*
|
|
* oc - object class eg. bfa_ioc
|
|
* st - state, eg. reset
|
|
* otype - object type, eg. struct bfa_ioc_s
|
|
* etype - object type, eg. enum ioc_event
|
|
*/
|
|
#define bfa_sm_state_decl(oc, st, otype, etype) \
|
|
static void oc ## _sm_ ## st(otype * fsm, etype event)
|
|
|
|
#define bfa_sm_set_state(_sm, _state) ((_sm)->sm = (bfa_sm_t)(_state))
|
|
#define bfa_sm_send_event(_sm, _event) ((_sm)->sm((_sm), (_event)))
|
|
#define bfa_sm_get_state(_sm) ((_sm)->sm)
|
|
#define bfa_sm_cmp_state(_sm, _state) ((_sm)->sm == (bfa_sm_t)(_state))
|
|
|
|
/*
|
|
* For converting from state machine function to state encoding.
|
|
*/
|
|
struct bfa_sm_table_s {
|
|
bfa_sm_t sm; /* state machine function */
|
|
int state; /* state machine encoding */
|
|
char *name; /* state name for display */
|
|
};
|
|
#define BFA_SM(_sm) ((bfa_sm_t)(_sm))
|
|
|
|
/*
|
|
* State machine with entry actions.
|
|
*/
|
|
typedef void (*bfa_fsm_t)(void *fsm, int event);
|
|
|
|
/*
|
|
* oc - object class eg. bfa_ioc
|
|
* st - state, eg. reset
|
|
* otype - object type, eg. struct bfa_ioc_s
|
|
* etype - object type, eg. enum ioc_event
|
|
*/
|
|
#define bfa_fsm_state_decl(oc, st, otype, etype) \
|
|
static void oc ## _sm_ ## st(otype * fsm, etype event); \
|
|
static void oc ## _sm_ ## st ## _entry(otype * fsm)
|
|
|
|
#define bfa_fsm_set_state(_fsm, _state) do { \
|
|
(_fsm)->fsm = (bfa_fsm_t)(_state); \
|
|
_state ## _entry(_fsm); \
|
|
} while (0)
|
|
|
|
#define bfa_fsm_send_event(_fsm, _event) ((_fsm)->fsm((_fsm), (_event)))
|
|
#define bfa_fsm_get_state(_fsm) ((_fsm)->fsm)
|
|
#define bfa_fsm_cmp_state(_fsm, _state) \
|
|
((_fsm)->fsm == (bfa_fsm_t)(_state))
|
|
|
|
static inline int
|
|
bfa_sm_to_state(struct bfa_sm_table_s *smt, bfa_sm_t sm)
|
|
{
|
|
int i = 0;
|
|
|
|
while (smt[i].sm && smt[i].sm != sm)
|
|
i++;
|
|
return smt[i].state;
|
|
}
|
|
|
|
/*
|
|
* @ Generic wait counter.
|
|
*/
|
|
|
|
typedef void (*bfa_wc_resume_t) (void *cbarg);
|
|
|
|
struct bfa_wc_s {
|
|
bfa_wc_resume_t wc_resume;
|
|
void *wc_cbarg;
|
|
int wc_count;
|
|
};
|
|
|
|
static inline void
|
|
bfa_wc_up(struct bfa_wc_s *wc)
|
|
{
|
|
wc->wc_count++;
|
|
}
|
|
|
|
static inline void
|
|
bfa_wc_down(struct bfa_wc_s *wc)
|
|
{
|
|
wc->wc_count--;
|
|
if (wc->wc_count == 0)
|
|
wc->wc_resume(wc->wc_cbarg);
|
|
}
|
|
|
|
/*
|
|
* Initialize a waiting counter.
|
|
*/
|
|
static inline void
|
|
bfa_wc_init(struct bfa_wc_s *wc, bfa_wc_resume_t wc_resume, void *wc_cbarg)
|
|
{
|
|
wc->wc_resume = wc_resume;
|
|
wc->wc_cbarg = wc_cbarg;
|
|
wc->wc_count = 0;
|
|
bfa_wc_up(wc);
|
|
}
|
|
|
|
/*
|
|
* Wait for counter to reach zero
|
|
*/
|
|
static inline void
|
|
bfa_wc_wait(struct bfa_wc_s *wc)
|
|
{
|
|
bfa_wc_down(wc);
|
|
}
|
|
|
|
static inline void
|
|
wwn2str(char *wwn_str, u64 wwn)
|
|
{
|
|
union {
|
|
u64 wwn;
|
|
u8 byte[8];
|
|
} w;
|
|
|
|
w.wwn = wwn;
|
|
sprintf(wwn_str, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", w.byte[0],
|
|
w.byte[1], w.byte[2], w.byte[3], w.byte[4], w.byte[5],
|
|
w.byte[6], w.byte[7]);
|
|
}
|
|
|
|
static inline void
|
|
fcid2str(char *fcid_str, u32 fcid)
|
|
{
|
|
union {
|
|
u32 fcid;
|
|
u8 byte[4];
|
|
} f;
|
|
|
|
f.fcid = fcid;
|
|
sprintf(fcid_str, "%02x:%02x:%02x", f.byte[1], f.byte[2], f.byte[3]);
|
|
}
|
|
|
|
#define bfa_swap_3b(_x) \
|
|
((((_x) & 0xff) << 16) | \
|
|
((_x) & 0x00ff00) | \
|
|
(((_x) & 0xff0000) >> 16))
|
|
|
|
#ifndef __BIG_ENDIAN
|
|
#define bfa_hton3b(_x) bfa_swap_3b(_x)
|
|
#else
|
|
#define bfa_hton3b(_x) (_x)
|
|
#endif
|
|
|
|
#define bfa_ntoh3b(_x) bfa_hton3b(_x)
|
|
|
|
#endif /* __BFA_CS_H__ */
|