[PATCH v5 16/27] cxl/events: Split event msgnum configuration from irq setup

[Ira Weiny <ira.weiny@xxxxxxxxx>]

Dynamic Capacity Devices (DCD) require event interrupts to process
memory addition or removal.  BIOS may have control over non-DCD event
processing.  DCD interrupt configuration needs to be separate from
memory event interrupt configuration.

Split cxl_event_config_msgnums() from irq setup in preparation for
separate DCD interrupts configuration.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Reviewed-by: Fan Ni <fan.ni@xxxxxxxxxxx>
Reviewed-by: Dave Jiang <dave.jiang@xxxxxxxxx>
Reviewed-by: Li Ming <ming4.li@xxxxxxxxx>
Signed-off-by: Ira Weiny <ira.weiny@xxxxxxxxx>

---
Changes:
[Jonathan: move zero'ing of policy to future patch]
---
 drivers/cxl/pci.c | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/drivers/cxl/pci.c b/drivers/cxl/pci.c
index c8454b3ecea5c053bf9723c275652398c0b2a195..8559b0eac011cadd49e67953b7560f49eedff94a 100644
--- a/drivers/cxl/pci.c
+++ b/drivers/cxl/pci.c
@@ -702,35 +702,31 @@ static int cxl_event_config_msgnums(struct cxl_memdev_state *mds,
 	return cxl_event_get_int_policy(mds, policy);
 }
 
-static int cxl_event_irqsetup(struct cxl_memdev_state *mds)
+static int cxl_event_irqsetup(struct cxl_memdev_state *mds,
+			      struct cxl_event_interrupt_policy *policy)
 {
 	struct cxl_dev_state *cxlds = &mds->cxlds;
-	struct cxl_event_interrupt_policy policy;
 	int rc;
 
-	rc = cxl_event_config_msgnums(mds, &policy);
-	if (rc)
-		return rc;
-
-	rc = cxl_event_req_irq(cxlds, policy.info_settings);
+	rc = cxl_event_req_irq(cxlds, policy->info_settings);
 	if (rc) {
 		dev_err(cxlds->dev, "Failed to get interrupt for event Info log\n");
 		return rc;
 	}
 
-	rc = cxl_event_req_irq(cxlds, policy.warn_settings);
+	rc = cxl_event_req_irq(cxlds, policy->warn_settings);
 	if (rc) {
 		dev_err(cxlds->dev, "Failed to get interrupt for event Warn log\n");
 		return rc;
 	}
 
-	rc = cxl_event_req_irq(cxlds, policy.failure_settings);
+	rc = cxl_event_req_irq(cxlds, policy->failure_settings);
 	if (rc) {
 		dev_err(cxlds->dev, "Failed to get interrupt for event Failure log\n");
 		return rc;
 	}
 
-	rc = cxl_event_req_irq(cxlds, policy.fatal_settings);
+	rc = cxl_event_req_irq(cxlds, policy->fatal_settings);
 	if (rc) {
 		dev_err(cxlds->dev, "Failed to get interrupt for event Fatal log\n");
 		return rc;
@@ -777,11 +773,15 @@ static int cxl_event_config(struct pci_host_bridge *host_bridge,
 		return -EBUSY;
 	}
 
+	rc = cxl_event_config_msgnums(mds, &policy);
+	if (rc)
+		return rc;
+
 	rc = cxl_mem_alloc_event_buf(mds);
 	if (rc)
 		return rc;
 
-	rc = cxl_event_irqsetup(mds);
+	rc = cxl_event_irqsetup(mds, &policy);
 	if (rc)
 		return rc;
 

-- 
2.47.0