[S] Change in coreboot[master]: mb/amd/mandolin: introduce mb_get_fch_irq_mapping

[Felix Held (Code Review)]

Attention is currently required from: Jason Glenesk, Fred Reitberger.

Felix Held has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/68847 )

Change subject: mb/amd/mandolin: introduce mb_get_fch_irq_mapping
......................................................................

mb/amd/mandolin: introduce mb_get_fch_irq_mapping

Introduce mb_get_fch_irq_mapping to access the FCH IRQ routing mapping
information and use it in init_tables to get the mapping instead of
directly accessing the array's contents. This is a preparation to move
the init_tables implementation to the common AMD SoC code in a later
patch.

Signed-off-by: Felix Held 
Change-Id: I9c39ea9de5ebbf70d2c5a87bfdfe270796548c5c
---
M src/mainboard/amd/mandolin/mainboard.c
1 file changed, 30 insertions(+), 6 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/47/68847/1

diff --git a/src/mainboard/amd/mandolin/mainboard.c b/src/mainboard/amd/mandolin/mainboard.c
index 6c4e545..1eb3329 100644
--- a/src/mainboard/amd/mandolin/mainboard.c
+++ b/src/mainboard/amd/mandolin/mainboard.c
@@ -51,18 +51,26 @@
    { PIRQ_MISC2,	0x00,		0x00 },
 };

+static const struct fch_irq_routing *mb_get_fch_irq_mapping(size_t *length)
+{
+	*length = ARRAY_SIZE(fch_irq_map);
+	return fch_irq_map;
+}
+
 static void init_tables(void)
 {
-	const struct fch_irq_routing *entry;
-	int i;
+	const struct fch_irq_routing *mb_irq_map;
+	size_t mb_fch_irq_mapping_table_size;
+	size_t i;
+
+	mb_irq_map = mb_get_fch_irq_mapping(&mb_fch_irq_mapping_table_size);

memset(fch_pic_routing, PIRQ_NC, sizeof(fch_pic_routing));
    memset(fch_apic_routing, PIRQ_NC, sizeof(fch_apic_routing));

-	for (i = 0; i < ARRAY_SIZE(fch_irq_map); i++) {
-		entry = fch_irq_map + i;
-		fch_pic_routing[entry->intr_index] = entry->pic_irq_num;
-		fch_apic_routing[entry->intr_index] = entry->apic_irq_num;
+	for (i = 0; i < mb_fch_irq_mapping_table_size; i++) {
+		fch_pic_routing[mb_irq_map[i].intr_index] = mb_irq_map[i].pic_irq_num;
+		fch_apic_routing[mb_irq_map[i].intr_index] = mb_irq_map[i].apic_irq_num;
    }
 }