From d44af4b09026609cf339de238b1051ec2701d6f0 Mon Sep 17 00:00:00 2001 From: Uma Krishnan Date: Mon, 26 Mar 2018 11:34:48 -0500 Subject: [PATCH] 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 Acked-by: Matthew R. Ochs Signed-off-by: Martin K. Petersen --- drivers/scsi/cxlflash/main.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c index 5d754d1c22a0..8c55fcdc4f4b 100644 --- a/drivers/scsi/cxlflash/main.c +++ b/drivers/scsi/cxlflash/main.c @@ -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 */