[PATCH V4 02/14] powerpc/xive: Define xive_native_alloc_get_irq_info()

[Haren Myneni]

pnv_ocxl_alloc_xive_irq() in ocxl.c allocates IRQ and gets trigger port
address. VAS also needs this function, but based on chip ID. So moved
this common function to xive/native.c.

Signed-off-by: Haren Myneni <haren at linux.ibm.com>
---
 arch/powerpc/include/asm/xive.h       |  2 ++
 arch/powerpc/platforms/powernv/ocxl.c | 20 ++------------------
 arch/powerpc/sysdev/xive/native.c     | 23 +++++++++++++++++++++++
 3 files changed, 27 insertions(+), 18 deletions(-)

diff --git a/arch/powerpc/include/asm/xive.h b/arch/powerpc/include/asm/xive.h
index 7ba6a90..382f5ed 100644
--- a/arch/powerpc/include/asm/xive.h
+++ b/arch/powerpc/include/asm/xive.h
@@ -139,6 +139,8 @@ extern int xive_native_set_queue_state(u32 vp_id, uint32_t prio, u32 qtoggle,
 extern int xive_native_get_vp_state(u32 vp_id, u64 *out_state);
 extern bool xive_native_has_queue_state_support(void);
 extern u32 xive_native_alloc_irq_on_chip(u32 chip_id);
+extern int xive_native_alloc_get_irq_info(u32 chip_id, u32 *irq,
+					u64 *trigger_addr);
 
 static inline u32 xive_native_alloc_irq(void)
 {
diff --git a/arch/powerpc/platforms/powernv/ocxl.c b/arch/powerpc/platforms/powernv/ocxl.c
index 8c65aac..fb8f99a 100644
--- a/arch/powerpc/platforms/powernv/ocxl.c
+++ b/arch/powerpc/platforms/powernv/ocxl.c
@@ -487,24 +487,8 @@ int pnv_ocxl_spa_remove_pe_from_cache(void *platform_data, int pe_handle)
 
 int pnv_ocxl_alloc_xive_irq(u32 *irq, u64 *trigger_addr)
 {
-	__be64 flags, trigger_page;
-	s64 rc;
-	u32 hwirq;
-
-	hwirq = xive_native_alloc_irq();
-	if (!hwirq)
-		return -ENOENT;
-
-	rc = opal_xive_get_irq_info(hwirq, &flags, NULL, &trigger_page, NULL,
-				NULL);
-	if (rc || !trigger_page) {
-		xive_native_free_irq(hwirq);
-		return -ENOENT;
-	}
-	*irq = hwirq;
-	*trigger_addr = be64_to_cpu(trigger_page);
-	return 0;
-
+	return xive_native_alloc_get_irq_info(OPAL_XIVE_ANY_CHIP, irq,
+						trigger_addr);
 }
 EXPORT_SYMBOL_GPL(pnv_ocxl_alloc_xive_irq);
 
diff --git a/arch/powerpc/sysdev/xive/native.c b/arch/powerpc/sysdev/xive/native.c
index 14d4406..abdd892 100644
--- a/arch/powerpc/sysdev/xive/native.c
+++ b/arch/powerpc/sysdev/xive/native.c
@@ -295,6 +295,29 @@ u32 xive_native_alloc_irq_on_chip(u32 chip_id)
 }
 EXPORT_SYMBOL_GPL(xive_native_alloc_irq_on_chip);
 
+int xive_native_alloc_get_irq_info(u32 chip_id, u32 *irq, u64 *trigger_addr)
+{
+	__be64 flags, trigger_page;
+	u32 hwirq;
+	s64 rc;
+
+	hwirq = xive_native_alloc_irq_on_chip(chip_id);
+	if (!hwirq)
+		return -ENOENT;
+
+	rc = opal_xive_get_irq_info(hwirq, &flags, NULL, &trigger_page, NULL,
+				NULL);
+	if (rc || !trigger_page) {
+		xive_native_free_irq(hwirq);
+		return -ENOENT;
+	}
+	*irq = hwirq;
+	*trigger_addr = be64_to_cpu(trigger_page);
+
+	return 0;
+}
+EXPORT_SYMBOL(xive_native_alloc_get_irq_info);
+
 void xive_native_free_irq(u32 irq)
 {
 	for (;;) {
-- 
1.8.3.1