[PATCH v3 15/25] cxl/pci: Factor out interrupt policy check

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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.

Factor out event interrupt setting validation.

Reviewed-by: Dave Jiang <dave.jiang@xxxxxxxxx>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Signed-off-by: Ira Weiny <ira.weiny@xxxxxxxxx>

---
Changes:
[iweiny: reword commit message]
[iweiny: keep review tags on simple patch]
---
 drivers/cxl/pci.c | 23 ++++++++++++++++-------
 1 file changed, 16 insertions(+), 7 deletions(-)

diff --git a/drivers/cxl/pci.c b/drivers/cxl/pci.c
index 17bea49bbf4d..370c74eae323 100644
--- a/drivers/cxl/pci.c
+++ b/drivers/cxl/pci.c
@@ -738,6 +738,21 @@ static bool cxl_event_int_is_fw(u8 setting)
 	return mode == CXL_INT_FW;
 }
 
+static bool cxl_event_validate_mem_policy(struct cxl_memdev_state *mds,
+					  struct cxl_event_interrupt_policy *policy)
+{
+	if (cxl_event_int_is_fw(policy->info_settings) ||
+	    cxl_event_int_is_fw(policy->warn_settings) ||
+	    cxl_event_int_is_fw(policy->failure_settings) ||
+	    cxl_event_int_is_fw(policy->fatal_settings)) {
+		dev_err(mds->cxlds.dev,
+			"FW still in control of Event Logs despite _OSC settings\n");
+		return false;
+	}
+
+	return true;
+}
+
 static int cxl_event_config(struct pci_host_bridge *host_bridge,
 			    struct cxl_memdev_state *mds, bool irq_avail)
 {
@@ -760,14 +775,8 @@ static int cxl_event_config(struct pci_host_bridge *host_bridge,
 	if (rc)
 		return rc;
 
-	if (cxl_event_int_is_fw(policy.info_settings) ||
-	    cxl_event_int_is_fw(policy.warn_settings) ||
-	    cxl_event_int_is_fw(policy.failure_settings) ||
-	    cxl_event_int_is_fw(policy.fatal_settings)) {
-		dev_err(mds->cxlds.dev,
-			"FW still in control of Event Logs despite _OSC settings\n");
+	if (!cxl_event_validate_mem_policy(mds, &policy))
 		return -EBUSY;
-	}
 
 	rc = cxl_event_config_msgnums(mds, &policy);
 	if (rc)

-- 
2.45.2





[Index of Archives]     [Kernel Newbies]     [Security]     [Netfilter]     [Bugtraq]     [Linux FS]     [Yosemite Forum]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Samba]     [Video 4 Linux]     [Device Mapper]     [Linux Resources]

  Powered by Linux