drivers/scsi/bfa/bfa_ioc.c

Source file repositories/reference/linux-study-clean/drivers/scsi/bfa/bfa_ioc.c

File Facts

System
Linux kernel
Corpus path
drivers/scsi/bfa/bfa_ioc.c
Extension
.c
Size
162515 bytes
Lines
6999
Domain
Driver Families
Bucket
drivers/scsi
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct bfa_ioc_sm_table {
	bfa_ioc_sm_t	sm;		/*  state machine function	*/
	enum bfa_ioc_state state;	/*  state machine encoding	*/
	char		*name;		/*  state name for display	*/
};

static struct bfa_ioc_sm_table ioc_sm_table[] = {
	{BFA_SM(bfa_ioc_sm_uninit), BFA_IOC_UNINIT},
	{BFA_SM(bfa_ioc_sm_reset), BFA_IOC_RESET},
	{BFA_SM(bfa_ioc_sm_enabling), BFA_IOC_ENABLING},
	{BFA_SM(bfa_ioc_sm_getattr), BFA_IOC_GETATTR},
	{BFA_SM(bfa_ioc_sm_op), BFA_IOC_OPERATIONAL},
	{BFA_SM(bfa_ioc_sm_fail_retry), BFA_IOC_INITFAIL},
	{BFA_SM(bfa_ioc_sm_fail), BFA_IOC_FAIL},
	{BFA_SM(bfa_ioc_sm_disabling), BFA_IOC_DISABLING},
	{BFA_SM(bfa_ioc_sm_disabled), BFA_IOC_DISABLED},
	{BFA_SM(bfa_ioc_sm_hwfail), BFA_IOC_HWFAIL},
};

static inline enum bfa_ioc_state
bfa_ioc_sm_to_state(struct bfa_ioc_sm_table *smt, bfa_ioc_sm_t sm)
{
	int	i = 0;

	while (smt[i].sm && smt[i].sm != sm)
		i++;
	return smt[i].state;
}

/*
 * IOCPF state machine definitions/declarations
 */

#define bfa_iocpf_timer_start(__ioc)					\
	bfa_timer_begin((__ioc)->timer_mod, &(__ioc)->ioc_timer,	\
			bfa_iocpf_timeout, (__ioc), BFA_IOC_TOV)
#define bfa_iocpf_timer_stop(__ioc)	bfa_timer_stop(&(__ioc)->ioc_timer)

#define bfa_iocpf_poll_timer_start(__ioc)				\
	bfa_timer_begin((__ioc)->timer_mod, &(__ioc)->ioc_timer,	\
			bfa_iocpf_poll_timeout, (__ioc), BFA_IOC_POLL_TOV)

#define bfa_sem_timer_start(__ioc)					\
	bfa_timer_begin((__ioc)->timer_mod, &(__ioc)->sem_timer,	\
			bfa_iocpf_sem_timeout, (__ioc), BFA_IOC_HWSEM_TOV)
#define bfa_sem_timer_stop(__ioc)	bfa_timer_stop(&(__ioc)->sem_timer)

/*
 * Forward declareations for iocpf state machine
 */
static void bfa_iocpf_timeout(void *ioc_arg);
static void bfa_iocpf_sem_timeout(void *ioc_arg);
static void bfa_iocpf_poll_timeout(void *ioc_arg);

/*
 * IOCPF states
 */
enum bfa_iocpf_state {
	BFA_IOCPF_RESET		= 1,	/*  IOC is in reset state */
	BFA_IOCPF_SEMWAIT	= 2,	/*  Waiting for IOC h/w semaphore */
	BFA_IOCPF_HWINIT	= 3,	/*  IOC h/w is being initialized */
	BFA_IOCPF_READY		= 4,	/*  IOCPF is initialized */
	BFA_IOCPF_INITFAIL	= 5,	/*  IOCPF failed */
	BFA_IOCPF_FAIL		= 6,	/*  IOCPF failed */
	BFA_IOCPF_DISABLING	= 7,	/*  IOCPF is being disabled */
	BFA_IOCPF_DISABLED	= 8,	/*  IOCPF is disabled */
	BFA_IOCPF_FWMISMATCH	= 9,	/*  IOC f/w different from drivers */
};

bfa_fsm_state_decl(bfa_iocpf, reset, struct bfa_iocpf_s, enum iocpf_event);
bfa_fsm_state_decl(bfa_iocpf, fwcheck, struct bfa_iocpf_s, enum iocpf_event);
bfa_fsm_state_decl(bfa_iocpf, mismatch, struct bfa_iocpf_s, enum iocpf_event);
bfa_fsm_state_decl(bfa_iocpf, semwait, struct bfa_iocpf_s, enum iocpf_event);
bfa_fsm_state_decl(bfa_iocpf, hwinit, struct bfa_iocpf_s, enum iocpf_event);
bfa_fsm_state_decl(bfa_iocpf, enabling, struct bfa_iocpf_s, enum iocpf_event);
bfa_fsm_state_decl(bfa_iocpf, ready, struct bfa_iocpf_s, enum iocpf_event);
bfa_fsm_state_decl(bfa_iocpf, initfail_sync, struct bfa_iocpf_s,
						enum iocpf_event);
bfa_fsm_state_decl(bfa_iocpf, initfail, struct bfa_iocpf_s, enum iocpf_event);
bfa_fsm_state_decl(bfa_iocpf, fail_sync, struct bfa_iocpf_s, enum iocpf_event);
bfa_fsm_state_decl(bfa_iocpf, fail, struct bfa_iocpf_s, enum iocpf_event);
bfa_fsm_state_decl(bfa_iocpf, disabling, struct bfa_iocpf_s, enum iocpf_event);
bfa_fsm_state_decl(bfa_iocpf, disabling_sync, struct bfa_iocpf_s,
						enum iocpf_event);
bfa_fsm_state_decl(bfa_iocpf, disabled, struct bfa_iocpf_s, enum iocpf_event);

struct bfa_iocpf_sm_table {
	bfa_iocpf_sm_t	sm;		/*  state machine function	*/
	enum bfa_iocpf_state state;	/*  state machine encoding	*/
	char		*name;		/*  state name for display	*/

Annotation

Implementation Notes