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scsi: cxlflash: Setup LISNs for master contexts 

Similar to user contexts, master contexts also require that the per-context
LISN registers be programmed for certain AFUs. The mapped trigger page is
obtained from underlying transport and registered with AFU for each master
context.

Signed-off-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com>
Acked-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Uma Krishnan 2018-03-26 11:34:48 -05:00 committed by Martin K. Petersen
parent 23239eeccb
commit d44af4b090
1 changed files with 21 additions and 0 deletions
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21
drivers/scsi/cxlflash/main.c
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@ -1756,6 +1756,8 @@ static int init_global(struct cxlflash_cfg *cfg)
u64 wwpn[MAX_FC_PORTS]; /* wwpn of AFU ports */
int i = 0, num_ports = 0;
int rc = 0;
int j;
void *ctx;
u64 reg;
rc = read_vpd(cfg, &wwpn[0]);
@ -1816,6 +1818,25 @@ static int init_global(struct cxlflash_cfg *cfg)
msleep(100);
}
if (afu_is_ocxl_lisn(afu)) {
/* Set up the LISN effective address for each master */
for (i = 0; i < afu->num_hwqs; i++) {
hwq = get_hwq(afu, i);
ctx = hwq->ctx_cookie;
for (j = 0; j < hwq->num_irqs; j++) {
reg = cfg->ops->get_irq_objhndl(ctx, j);
writeq_be(reg, &hwq->ctrl_map->lisn_ea[j]);
}
reg = hwq->ctx_hndl;
writeq_be(SISL_LISN_PASID(reg, reg),
&hwq->ctrl_map->lisn_pasid[0]);
writeq_be(SISL_LISN_PASID(0UL, reg),
&hwq->ctrl_map->lisn_pasid[1]);
}
}
/* Set up master's own CTX_CAP to allow real mode, host translation */
/* tables, afu cmds and read/write GSCSI cmds. */
/* First, unlock ctx_cap write by reading mbox */