From d2197485a1883c60d044146b1ee69aac654c55e8 Mon Sep 17 00:00:00 2001
From: Matthew Rosato <mjrosato@linux.ibm.com>
Date: Mon, 6 Jun 2022 16:33:09 -0400
Subject: s390/airq: pass more TPI info to airq handlers

A subsequent patch will introduce an airq handler that requires additional
TPI information beyond directed vs floating, so pass the entire tpi_info
structure via the handler.  Only pci actually uses this information today,
for the other airq handlers this is effectively a no-op.

Reviewed-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Acked-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Link: https://lore.kernel.org/r/20220606203325.110625-6-mjrosato@linux.ibm.com
Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
---
 arch/s390/include/asm/airq.h | 3 ++-
 arch/s390/kvm/interrupt.c    | 4 +++-
 arch/s390/pci/pci_irq.c      | 9 +++++++--
 3 files changed, 12 insertions(+), 4 deletions(-)

(limited to 'arch')

diff --git a/arch/s390/include/asm/airq.h b/arch/s390/include/asm/airq.h
index 01936fdfaddb..7918a7d09028 100644
--- a/arch/s390/include/asm/airq.h
+++ b/arch/s390/include/asm/airq.h
@@ -12,10 +12,11 @@
 
 #include <linux/bit_spinlock.h>
 #include <linux/dma-mapping.h>
+#include <asm/tpi.h>
 
 struct airq_struct {
 	struct hlist_node list;		/* Handler queueing. */
-	void (*handler)(struct airq_struct *airq, bool floating);
+	void (*handler)(struct airq_struct *airq, struct tpi_info *tpi_info);
 	u8 *lsi_ptr;			/* Local-Summary-Indicator pointer */
 	u8 lsi_mask;			/* Local-Summary-Indicator mask */
 	u8 isc;				/* Interrupt-subclass */
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index af96dc0549a4..17ff475157d8 100644
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -28,6 +28,7 @@
 #include <asm/switch_to.h>
 #include <asm/nmi.h>
 #include <asm/airq.h>
+#include <asm/tpi.h>
 #include "kvm-s390.h"
 #include "gaccess.h"
 #include "trace-s390.h"
@@ -3311,7 +3312,8 @@ out:
 }
 EXPORT_SYMBOL_GPL(kvm_s390_gisc_unregister);
 
-static void gib_alert_irq_handler(struct airq_struct *airq, bool floating)
+static void gib_alert_irq_handler(struct airq_struct *airq,
+				  struct tpi_info *tpi_info)
 {
 	inc_irq_stat(IRQIO_GAL);
 	process_gib_alert_list();
diff --git a/arch/s390/pci/pci_irq.c b/arch/s390/pci/pci_irq.c
index 500cd2dbdf53..b805c75252ed 100644
--- a/arch/s390/pci/pci_irq.c
+++ b/arch/s390/pci/pci_irq.c
@@ -11,6 +11,7 @@
 
 #include <asm/isc.h>
 #include <asm/airq.h>
+#include <asm/tpi.h>
 
 static enum {FLOATING, DIRECTED} irq_delivery;
 
@@ -216,8 +217,11 @@ static void zpci_handle_fallback_irq(void)
 	}
 }
 
-static void zpci_directed_irq_handler(struct airq_struct *airq, bool floating)
+static void zpci_directed_irq_handler(struct airq_struct *airq,
+				      struct tpi_info *tpi_info)
 {
+	bool floating = !tpi_info->directed_irq;
+
 	if (floating) {
 		inc_irq_stat(IRQIO_PCF);
 		zpci_handle_fallback_irq();
@@ -227,7 +231,8 @@ static void zpci_directed_irq_handler(struct airq_struct *airq, bool floating)
 	}
 }
 
-static void zpci_floating_irq_handler(struct airq_struct *airq, bool floating)
+static void zpci_floating_irq_handler(struct airq_struct *airq,
+				      struct tpi_info *tpi_info)
 {
 	unsigned long si, ai;
 	struct airq_iv *aibv;
-- 
cgit