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[SCSI] bfa: Add support to configure min/max bandwidth for a pcifn

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- Added support to configure minimum bandwidth for a pcifn.
- Minimum bandwith is guaranteed at per queue level.
- Added support to update pcifn bandwidth dynamically without
  a server reboot.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Krishna Gudipati
2012-09-21 17:26:50 -07:00
committed by James Bottomley
parent 7ace27ae28
commit 1a1297c644
7 changed files with 41 additions and 26 deletions
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20
drivers/scsi/bfa/bfa_ioc.c
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@@ -3019,7 +3019,6 @@ bfa_ablk_config_swap(struct bfa_ablk_cfg_s *cfg)
struct bfa_ablk_cfg_inst_s *cfg_inst;
int i, j;
u16 be16;
u32 be32;
for (i = 0; i < BFA_ABLK_MAX; i++) {
cfg_inst = &cfg->inst[i];
@@ -3030,8 +3029,10 @@ bfa_ablk_config_swap(struct bfa_ablk_cfg_s *cfg)
cfg_inst->pf_cfg[j].num_qpairs = be16_to_cpu(be16);
be16 = cfg_inst->pf_cfg[j].num_vectors;
cfg_inst->pf_cfg[j].num_vectors = be16_to_cpu(be16);
be32 = cfg_inst->pf_cfg[j].bw;
cfg_inst->pf_cfg[j].bw = be16_to_cpu(be32);
be16 = cfg_inst->pf_cfg[j].bw_min;
cfg_inst->pf_cfg[j].bw_min = be16_to_cpu(be16);
be16 = cfg_inst->pf_cfg[j].bw_max;
cfg_inst->pf_cfg[j].bw_max = be16_to_cpu(be16);
}
}
}
@@ -3173,7 +3174,8 @@ bfa_ablk_query(struct bfa_ablk_s *ablk, struct bfa_ablk_cfg_s *ablk_cfg,
bfa_status_t
bfa_ablk_pf_create(struct bfa_ablk_s *ablk, u16 *pcifn,
u8 port, enum bfi_pcifn_class personality, int bw,
u8 port, enum bfi_pcifn_class personality,
u16 bw_min, u16 bw_max,
bfa_ablk_cbfn_t cbfn, void *cbarg)
{
struct bfi_ablk_h2i_pf_req_s *m;
@@ -3197,7 +3199,8 @@ bfa_ablk_pf_create(struct bfa_ablk_s *ablk, u16 *pcifn,
bfi_h2i_set(m->mh, BFI_MC_ABLK, BFI_ABLK_H2I_PF_CREATE,
bfa_ioc_portid(ablk->ioc));
m->pers = cpu_to_be16((u16)personality);
m->bw = cpu_to_be32(bw);
m->bw_min = cpu_to_be16(bw_min);
m->bw_max = cpu_to_be16(bw_max);
m->port = port;
bfa_ioc_mbox_queue(ablk->ioc, &ablk->mb);
@@ -3297,8 +3300,8 @@ bfa_ablk_port_config(struct bfa_ablk_s *ablk, int port, enum bfa_mode_s mode,
}
bfa_status_t
bfa_ablk_pf_update(struct bfa_ablk_s *ablk, int pcifn, int bw,
bfa_ablk_cbfn_t cbfn, void *cbarg)
bfa_ablk_pf_update(struct bfa_ablk_s *ablk, int pcifn, u16 bw_min,
u16 bw_max, bfa_ablk_cbfn_t cbfn, void *cbarg)
{
struct bfi_ablk_h2i_pf_req_s *m;
@@ -3320,7 +3323,8 @@ bfa_ablk_pf_update(struct bfa_ablk_s *ablk, int pcifn, int bw,
bfi_h2i_set(m->mh, BFI_MC_ABLK, BFI_ABLK_H2I_PF_UPDATE,
bfa_ioc_portid(ablk->ioc));
m->pcifn = (u8)pcifn;
m->bw = cpu_to_be32(bw);
m->bw_min = cpu_to_be16(bw_min);
m->bw_max = cpu_to_be16(bw_max);
bfa_ioc_mbox_queue(ablk->ioc, &ablk->mb);
return BFA_STATUS_OK;