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scsi: lpfc: Add warning notification period to CMF_SYNC_WQE

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Add capability to specify warning notification period to help firmware
adjust to congestion accordingly.

Link: https://lore.kernel.org/r/20220819011736.14141-5-jsmart2021@gmail.com
Co-developed-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
James Smart 2022-08-18 18:17:33 -07:00 committed by Martin K. Petersen
parent bd269188ea
commit 71ddeeaf5b
3 changed files with 11 additions and 1 deletions
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2
drivers/scsi/lpfc/lpfc.h
View File

@ -1564,7 +1564,7 @@ struct lpfc_hba {
/* cgn_reg_signal and cgn_init_reg_signal use
* enum fc_edc_cg_signal_cap_types
*/
u16 cgn_fpin_frequency;
u16 cgn_fpin_frequency; /* In units of msecs */
#define LPFC_FPIN_INIT_FREQ 0xffff
u32 cgn_sig_freq;
u32 cgn_acqe_cnt;

4
drivers/scsi/lpfc/lpfc_hw4.h
View File

@ -738,6 +738,7 @@ struct lpfc_register {
#define lpfc_sliport_eqdelay_id_WORD word0
#define LPFC_SEC_TO_USEC 1000000
#define LPFC_SEC_TO_MSEC 1000
#define LPFC_MSECS_TO_SECS(msecs) ((msecs) / 1000)
/* The following Registers apply to SLI4 if_type 0 UCNAs. They typically
* reside in BAR 2.
@ -4798,6 +4799,9 @@ struct cmf_sync_wqe {
#define cmf_sync_cqid_WORD word11
uint32_t read_bytes;
uint32_t word13;
#define cmf_sync_period_SHIFT 16
#define cmf_sync_period_MASK 0x0000ffff
#define cmf_sync_period_WORD word13
uint32_t word14;
uint32_t word15;
};

6
drivers/scsi/lpfc/lpfc_sli.c
View File

@ -1916,6 +1916,7 @@ lpfc_issue_cmf_sync_wqe(struct lpfc_hba *phba, u32 ms, u64 total)
unsigned long iflags;
u32 ret_val;
u32 atot, wtot, max;
u16 warn_sync_period = 0;
/* First address any alarm / warning activity */
atot = atomic_xchg(&phba->cgn_sync_alarm_cnt, 0);
@ -1970,10 +1971,14 @@ lpfc_issue_cmf_sync_wqe(struct lpfc_hba *phba, u32 ms, u64 total)
lpfc_acqe_cgn_frequency;
bf_set(cmf_sync_wsigmax, &wqe->cmf_sync, max);
bf_set(cmf_sync_wsigcnt, &wqe->cmf_sync, wtot);
warn_sync_period = lpfc_acqe_cgn_frequency;
} else {
/* We hit a FPIN warning condition */
bf_set(cmf_sync_wfpinmax, &wqe->cmf_sync, 1);
bf_set(cmf_sync_wfpincnt, &wqe->cmf_sync, 1);
if (phba->cgn_fpin_frequency != LPFC_FPIN_INIT_FREQ)
warn_sync_period =
LPFC_MSECS_TO_SECS(phba->cgn_fpin_frequency);
}
}
@ -1989,6 +1994,7 @@ initpath:
bf_set(cmf_sync_reqtag, &wqe->cmf_sync, sync_buf->iotag);
bf_set(cmf_sync_qosd, &wqe->cmf_sync, 1);
bf_set(cmf_sync_period, &wqe->cmf_sync, warn_sync_period);
bf_set(cmf_sync_cmd_type, &wqe->cmf_sync, CMF_SYNC_COMMAND);
bf_set(cmf_sync_wqec, &wqe->cmf_sync, 1);