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[SCSI] bfa: add dynamic queue selection 

Add new bfa functionality to support dynamic queue selection (IO redirection).
IO redirection can only be enabled when QoS is disabled.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Jing Huang 2010-07-08 19:57:33 -07:00 committed by James Bottomley
parent 4b5e759dca
commit 36d345a703
14 changed files with 117 additions and 19 deletions
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7
drivers/scsi/bfa/bfa_cb_ioim_macros.h
View File

@ -171,6 +171,11 @@ bfa_cb_ioim_get_cdblen(struct bfad_ioim_s *dio)
return cmnd->cmd_len;
}
/**
* Assign queue to be used for the I/O request. This value depends on whether
* the driver wants to use the queues via any specific algorithm. Currently,
* this is not supported.
*/
#define bfa_cb_ioim_get_reqq(__dio) BFA_FALSE
#endif /* __BFA_HCB_IOIM_MACROS_H__ */

24
drivers/scsi/bfa/bfa_fcpim.c
View File

@ -167,4 +167,28 @@ bfa_fcpim_qdepth_get(struct bfa_s *bfa)
return fcpim->q_depth;
}
void
bfa_fcpim_update_ioredirect(struct bfa_s *bfa)
{
bfa_boolean_t ioredirect;
/*
* IO redirection is turned off when QoS is enabled and vice versa
*/
ioredirect = bfa_fcport_is_qos_enabled(bfa) ? BFA_FALSE : BFA_TRUE;
/*
* Notify the bfad module of a possible state change in
* IO redirection capability, due to a QoS state change. bfad will
* check on the support for io redirection and update the
* fcpim's ioredirect state accordingly.
*/
bfa_cb_ioredirect_state_change((void *)(bfa->bfad), ioredirect);
}
void
bfa_fcpim_set_ioredirect(struct bfa_s *bfa, bfa_boolean_t state)
{
struct bfa_fcpim_mod_s *fcpim = BFA_FCPIM_MOD(bfa);
fcpim->ioredirect = state;
}

5
drivers/scsi/bfa/bfa_fcpim_priv.h
View File

@ -49,7 +49,8 @@ struct bfa_fcpim_mod_s {
int num_tskim_reqs;
u32 path_tov;
u16 q_depth;
u16 rsvd;
u8 reqq; /* Request queue to be used */
u8 rsvd;
struct list_head itnim_q; /* queue of active itnim */
struct list_head ioim_free_q; /* free IO resources */
struct list_head ioim_resfree_q; /* IOs waiting for f/w */
@ -58,6 +59,7 @@ struct bfa_fcpim_mod_s {
u32 ios_active; /* current active IOs */
u32 delay_comp;
struct bfa_fcpim_stats_s stats;
bfa_boolean_t ioredirect;
};
struct bfa_ioim_s;
@ -82,6 +84,7 @@ struct bfa_ioim_s {
struct bfa_cb_qe_s hcb_qe; /* bfa callback qelem */
bfa_cb_cbfn_t io_cbfn; /* IO completion handler */
struct bfa_ioim_sp_s *iosp; /* slow-path IO handling */
u8 reqq; /* Request queue for I/O */
};
struct bfa_ioim_sp_s {

13
drivers/scsi/bfa/bfa_fcport.c
View File

@ -1857,8 +1857,13 @@ bfa_fcport_cfg_qos(struct bfa_s *bfa, bfa_boolean_t on_off)
bfa_trc(bfa, ioc_type);
if (ioc_type == BFA_IOC_TYPE_FC)
if (ioc_type == BFA_IOC_TYPE_FC) {
fcport->cfg.qos_enabled = on_off;
/**
* Notify fcpim of the change in QoS state
*/
bfa_fcpim_update_ioredirect(bfa);
}
}
void
@ -1942,4 +1947,10 @@ bfa_fcport_is_linkup(struct bfa_s *bfa)
return bfa_sm_cmp_state(BFA_FCPORT_MOD(bfa), bfa_fcport_sm_linkup);
}
bfa_boolean_t
bfa_fcport_is_qos_enabled(struct bfa_s *bfa)
{
struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);
return fcport->cfg.qos_enabled;
}

7
drivers/scsi/bfa/bfa_hw_cb.c
View File

@ -152,4 +152,9 @@ bfa_hwcb_isr_mode_set(struct bfa_s *bfa, bfa_boolean_t msix)
bfa->iocfc.hwif.hw_rspq_ack = bfa_hwcb_rspq_ack_msix;
}
void
bfa_hwcb_msix_get_rme_range(struct bfa_s *bfa, u32 *start, u32 *end)
{
*start = BFA_MSIX_RME_Q0;
*end = BFA_MSIX_RME_Q7;
}

7
drivers/scsi/bfa/bfa_hw_ct.c
View File

@ -168,4 +168,9 @@ bfa_hwct_isr_mode_set(struct bfa_s *bfa, bfa_boolean_t msix)
bfa_ioc_isr_mode_set(&bfa->ioc, msix);
}
void
bfa_hwct_msix_get_rme_range(struct bfa_s *bfa, u32 *start, u32 *end)
{
*start = BFA_MSIX_RME_Q0;
*end = BFA_MSIX_RME_Q3;
}

1
drivers/scsi/bfa/bfa_intr.c
View File

@ -134,6 +134,7 @@ bfa_isr_enable(struct bfa_s *bfa)
bfa_reg_write(bfa->iocfc.bfa_regs.intr_status, intr_unmask);
bfa_reg_write(bfa->iocfc.bfa_regs.intr_mask, ~intr_unmask);
bfa->iocfc.intr_mask = ~intr_unmask;
bfa_isr_mode_set(bfa, bfa->msix.nvecs != 0);
}

2
drivers/scsi/bfa/bfa_iocfc.c
View File

@ -187,6 +187,7 @@ bfa_iocfc_init_mem(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
iocfc->hwif.hw_msix_uninstall = bfa_hwct_msix_uninstall;
iocfc->hwif.hw_isr_mode_set = bfa_hwct_isr_mode_set;
iocfc->hwif.hw_msix_getvecs = bfa_hwct_msix_getvecs;
iocfc->hwif.hw_msix_get_rme_range = bfa_hwct_msix_get_rme_range;
} else {
iocfc->hwif.hw_reginit = bfa_hwcb_reginit;
iocfc->hwif.hw_reqq_ack = bfa_hwcb_reqq_ack;
@ -196,6 +197,7 @@ bfa_iocfc_init_mem(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
iocfc->hwif.hw_msix_uninstall = bfa_hwcb_msix_uninstall;
iocfc->hwif.hw_isr_mode_set = bfa_hwcb_isr_mode_set;
iocfc->hwif.hw_msix_getvecs = bfa_hwcb_msix_getvecs;
iocfc->hwif.hw_msix_get_rme_range = bfa_hwcb_msix_get_rme_range;
}
iocfc->hwif.hw_reginit(bfa);

7
drivers/scsi/bfa/bfa_iocfc.h
View File

@ -63,6 +63,8 @@ struct bfa_hwif_s {
void (*hw_isr_mode_set)(struct bfa_s *bfa, bfa_boolean_t msix);
void (*hw_msix_getvecs)(struct bfa_s *bfa, u32 *vecmap,
u32 *nvecs, u32 *maxvec);
void (*hw_msix_get_rme_range) (struct bfa_s *bfa, u32 *start,
u32 *end);
};
typedef void (*bfa_cb_iocfc_t) (void *cbarg, enum bfa_status status);
@ -105,6 +107,7 @@ struct bfa_iocfc_s {
bfa_cb_iocfc_t updateq_cbfn; /* bios callback function */
void *updateq_cbarg; /* bios callback arg */
u32 intr_mask;
};
#define bfa_lpuid(__bfa) bfa_ioc_portid(&(__bfa)->ioc)
@ -119,6 +122,8 @@ struct bfa_iocfc_s {
#define bfa_msix_getvecs(__bfa, __vecmap, __nvecs, __maxvec) \
((__bfa)->iocfc.hwif.hw_msix_getvecs(__bfa, __vecmap, \
__nvecs, __maxvec))
#define bfa_msix_get_rme_range(__bfa, __start, __end) \
((__bfa)->iocfc.hwif.hw_msix_get_rme_range(__bfa, __start, __end))
/*
* FC specific IOC functions.
@ -154,6 +159,7 @@ void bfa_hwcb_msix_uninstall(struct bfa_s *bfa);
void bfa_hwcb_isr_mode_set(struct bfa_s *bfa, bfa_boolean_t msix);
void bfa_hwcb_msix_getvecs(struct bfa_s *bfa, u32 *vecmap,
u32 *nvecs, u32 *maxvec);
void bfa_hwcb_msix_get_rme_range(struct bfa_s *bfa, u32 *start, u32 *end);
void bfa_hwct_reginit(struct bfa_s *bfa);
void bfa_hwct_reqq_ack(struct bfa_s *bfa, int rspq);
void bfa_hwct_rspq_ack(struct bfa_s *bfa, int rspq);
@ -163,6 +169,7 @@ void bfa_hwct_msix_uninstall(struct bfa_s *bfa);
void bfa_hwct_isr_mode_set(struct bfa_s *bfa, bfa_boolean_t msix);
void bfa_hwct_msix_getvecs(struct bfa_s *bfa, u32 *vecmap,
u32 *nvecs, u32 *maxvec);
void bfa_hwct_msix_get_rme_range(struct bfa_s *bfa, u32 *start, u32 *end);
void bfa_com_meminfo(bfa_boolean_t mincfg, u32 *dm_len);
void bfa_com_attach(struct bfa_s *bfa, struct bfa_meminfo_s *mi,

25
drivers/scsi/bfa/bfa_ioim.c
View File

@ -234,7 +234,7 @@ bfa_ioim_sm_active(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
bfa_sm_set_state(ioim, bfa_ioim_sm_abort);
else {
bfa_sm_set_state(ioim, bfa_ioim_sm_abort_qfull);
bfa_reqq_wait(ioim->bfa, ioim->itnim->reqq,
bfa_reqq_wait(ioim->bfa, ioim->reqq,
&ioim->iosp->reqq_wait);
}
break;
@ -247,7 +247,7 @@ bfa_ioim_sm_active(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup);
else {
bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup_qfull);
bfa_reqq_wait(ioim->bfa, ioim->itnim->reqq,
bfa_reqq_wait(ioim->bfa, ioim->reqq,
&ioim->iosp->reqq_wait);
}
break;
@ -305,7 +305,7 @@ bfa_ioim_sm_abort(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup);
else {
bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup_qfull);
bfa_reqq_wait(ioim->bfa, ioim->itnim->reqq,
bfa_reqq_wait(ioim->bfa, ioim->reqq,
&ioim->iosp->reqq_wait);
}
break;
@ -738,9 +738,9 @@ bfa_ioim_send_ioreq(struct bfa_ioim_s *ioim)
/**
* check for room in queue to send request now
*/
m = bfa_reqq_next(ioim->bfa, itnim->reqq);
m = bfa_reqq_next(ioim->bfa, ioim->reqq);
if (!m) {
bfa_reqq_wait(ioim->bfa, ioim->itnim->reqq,
bfa_reqq_wait(ioim->bfa, ioim->reqq,
&ioim->iosp->reqq_wait);
return BFA_FALSE;
}
@ -832,7 +832,7 @@ bfa_ioim_send_ioreq(struct bfa_ioim_s *ioim)
/**
* queue I/O message to firmware
*/
bfa_reqq_produce(ioim->bfa, itnim->reqq);
bfa_reqq_produce(ioim->bfa, ioim->reqq);
return BFA_TRUE;
}
@ -930,14 +930,13 @@ bfa_ioim_sgpg_setup(struct bfa_ioim_s *ioim)
static bfa_boolean_t
bfa_ioim_send_abort(struct bfa_ioim_s *ioim)
{
struct bfa_itnim_s *itnim = ioim->itnim;
struct bfi_ioim_abort_req_s *m;
enum bfi_ioim_h2i msgop;
/**
* check for room in queue to send request now
*/
m = bfa_reqq_next(ioim->bfa, itnim->reqq);
m = bfa_reqq_next(ioim->bfa, ioim->reqq);
if (!m)
return BFA_FALSE;
@ -956,7 +955,7 @@ bfa_ioim_send_abort(struct bfa_ioim_s *ioim)
/**
* queue I/O message to firmware
*/
bfa_reqq_produce(ioim->bfa, itnim->reqq);
bfa_reqq_produce(ioim->bfa, ioim->reqq);
return BFA_TRUE;
}
@ -1306,6 +1305,14 @@ void
bfa_ioim_start(struct bfa_ioim_s *ioim)
{
bfa_trc_fp(ioim->bfa, ioim->iotag);
/**
* Obtain the queue over which this request has to be issued
*/
ioim->reqq = bfa_fcpim_ioredirect_enabled(ioim->bfa) ?
bfa_cb_ioim_get_reqq(ioim->dio) :
bfa_itnim_get_reqq(ioim);
bfa_sm_send_event(ioim, BFA_IOIM_SM_START);
}

9
drivers/scsi/bfa/bfad_im.c
View File

@ -702,6 +702,15 @@ bfad_im_probe_undo(struct bfad_s *bfad)
}
}
/**
* Call back function to handle IO redirection state change
*/
void
bfa_cb_ioredirect_state_change(void *hcb_bfad, bfa_boolean_t ioredirect)
{
/* Do nothing */
}
struct Scsi_Host *
bfad_os_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
{

20
drivers/scsi/bfa/include/bfa_fcpim.h
View File

@ -42,6 +42,24 @@ u16 bfa_fcpim_qdepth_get(struct bfa_s *bfa);
bfa_status_t bfa_fcpim_get_modstats(struct bfa_s *bfa,
struct bfa_fcpim_stats_s *modstats);
bfa_status_t bfa_fcpim_clr_modstats(struct bfa_s *bfa);
void bfa_fcpim_set_ioredirect(struct bfa_s *bfa, bfa_boolean_t state);
void bfa_fcpim_update_ioredirect(struct bfa_s *bfa);
void bfa_cb_ioredirect_state_change(void *hcb_bfad, bfa_boolean_t ioredirect);
#define bfa_fcpim_ioredirect_enabled(__bfa) \
(((struct bfa_fcpim_mod_s *)(BFA_FCPIM_MOD(__bfa)))->ioredirect)
#define bfa_fcpim_get_next_reqq(__bfa, __qid) \
{ \
struct bfa_fcpim_mod_s *__fcpim = BFA_FCPIM_MOD(__bfa); \
__fcpim->reqq++; \
__fcpim->reqq &= (BFI_IOC_MAX_CQS - 1); \
*(__qid) = __fcpim->reqq; \
}
#define bfa_iocfc_map_msg_to_qid(__msg, __qid) \
*(__qid) = (u8)((__msg) & (BFI_IOC_MAX_CQS - 1));
/*
* bfa itnim API functions
@ -56,6 +74,7 @@ void bfa_itnim_get_stats(struct bfa_itnim_s *itnim,
struct bfa_itnim_hal_stats_s *stats);
void bfa_itnim_clear_stats(struct bfa_itnim_s *itnim);
#define bfa_itnim_get_reqq(__ioim) (((struct bfa_ioim_s *)__ioim)->itnim->reqq)
/**
* BFA completion callback for bfa_itnim_online().
@ -156,4 +175,3 @@ void bfa_cb_tskim_done(void *bfad, struct bfad_tskim_s *dtsk,
enum bfi_tskim_status tsk_status);
#endif /* __BFA_FCPIM_H__ */

1
drivers/scsi/bfa/include/bfa_svc.h
View File

@ -215,6 +215,7 @@ bfa_status_t bfa_fcport_get_stats(struct bfa_s *bfa,
bfa_cb_pport_t cbfn, void *cbarg);
bfa_status_t bfa_fcport_clear_stats(struct bfa_s *bfa, bfa_cb_pport_t cbfn,
void *cbarg);
bfa_boolean_t bfa_fcport_is_qos_enabled(struct bfa_s *bfa);
/*
* bfa rport API functions

2
drivers/scsi/bfa/include/defs/bfa_defs_driver.h
View File

@ -29,7 +29,7 @@ struct bfa_driver_stats_s {
u16 tm_target_reset;
u16 tm_bus_reset;
u16 ioc_restart; /* IOC restart count */
u16 io_pending; /* outstanding io count per-IOC */
u16 rsvd;
u64 control_req;
u64 input_req;
u64 output_req;