x86: queensbay: Implement PIRQ routing
Implement Intel Queensbay platform-specific PIRQ routing support.
The chipset PIRQ routing setup is called in the arch_misc_init().
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/x86/include/asm/arch-queensbay/irq.h b/arch/x86/include/asm/arch-queensbay/irq.h
new file mode 100644
index 0000000..e7f8616
--- /dev/null
+++ b/arch/x86/include/asm/arch-queensbay/irq.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef _ARCH_IRQ_H_
+#define _ARCH_IRQ_H_
+
+enum pci_int_pin {
+ INTX,
+ INTA,
+ INTB,
+ INTC,
+ INTD
+};
+
+enum pirq_pin {
+ PIRQA,
+ PIRQB,
+ PIRQC,
+ PIRQD,
+ PIRQE,
+ PIRQF,
+ PIRQG,
+ PIRQH
+};
+
+/* PIRQ link number and value conversion */
+#define LINK_V2N(link) (link - 0x60)
+#define LINK_N2V(link) (link + 0x60)
+
+#define PIRQ_BITMAP 0xdee0
+
+struct irq_info;
+
+/**
+ * board_fill_irq_info() - Board-specific irq_info fill routine
+ *
+ * This fills the irq_info table for any board-specific add-in cards.
+ *
+ * @slot: pointer to the struct irq_info that is to be filled in
+ * @return: number of entries were written to the struct irq_info
+ */
+int board_fill_irq_info(struct irq_info *slot);
+
+/**
+ * pirq_init() - Initialize platform PIRQ routing
+ *
+ * This initializes the PIRQ routing on the platform and configures all PCI
+ * devices' interrupt line register to a working IRQ number on the 8259 PIC.
+ */
+void pirq_init(void);
+
+#endif /* _ARCH_IRQ_H_ */