1 files changed, 93 insertions, 0 deletions
diff --git a/arch/mips/pmc-sierra/yosemite/irq-handler.S b/arch/mips/pmc-sierra/yosemite/irq-handler.S
new file mode 100644
index 000000000000..33b9c40d4f5c
--- /dev/null
+++ b/arch/mips/pmc-sierra/yosemite/irq-handler.S
@@ -0,0 +1,93 @@
+/*
+ * Copyright 2003, 04 PMC-Sierra Inc.
+ * Author: Manish Lachwani (lachwani@pmc-sierra.com
+ * Copyright 2004 Ralf Baechle (ralf@linux-mips.org)
+ *
+ * First-level interrupt router for the PMC-Sierra Titan board
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ *
+ * Titan supports Hypertransport or PCI but not both. Hence, one interrupt
+ * line is shared between the PCI slot A and Hypertransport. This is the
+ * Processor INTB #0.
+ */
+
+#include <linux/config.h>
+#include <asm/asm.h>
+#include <asm/mipsregs.h>
+#include <asm/addrspace.h>
+#include <asm/regdef.h>
+#include <asm/stackframe.h>
+
+		.align	5
+		NESTED(titan_handle_int, PT_SIZE, sp)
+		SAVE_ALL
+		CLI
+		.set	at
+		.set	noreorder
+		la	ra, ret_from_irq
+		mfc0	t0, CP0_CAUSE
+		mfc0	t2, CP0_STATUS
+
+		and	t0, t2
+
+		andi	t2, t0, STATUSF_IP7	/* INTB5 hardware line */
+		bnez	t2, ll_timer_irq	/* Timer */
+		andi	t1, t0, STATUSF_IP2	/* INTB0 hardware line */
+		bnez	t1, ll_pcia_irq		/* 64-bit PCI */
+		andi	t2, t0, STATUSF_IP3	/* INTB1 hardware line */
+		bnez	t2, ll_pcib_irq		/* second 64-bit PCI slot */
+		andi	t1, t0, STATUSF_IP4	/* INTB2 hardware line */
+		bnez	t1, ll_duart_irq	/* UART	*/
+		andi    t2, t0, STATUSF_IP5	/* SMP inter-core interrupts */
+		bnez    t2, ll_smp_irq
+		andi	t1, t0, STATUSF_IP6
+		bnez	t1, ll_ht_irq		/* Hypertransport */
+
+		move	a0, sp
+		j	do_extended_irq
+		END(titan_handle_int)
+
+		.set	reorder
+		.align	5
+
+ll_pcia_irq:
+		li	a0, 2
+		move	a1, sp
+#ifdef CONFIG_HYPERTRANSPORT
+		j	ll_ht_smp_irq_handler
+#else
+		j	do_IRQ
+#endif
+
+ll_pcib_irq:
+		li	a0, 3
+		move	a1, sp
+		j	do_IRQ
+
+ll_duart_irq:
+		li	a0, 4
+		move	a1, sp
+		j	do_IRQ
+
+ll_smp_irq:
+		li	a0, 5
+		move	a1, sp
+#ifdef CONFIG_SMP
+		j	titan_mailbox_irq
+#else
+		j	do_IRQ
+#endif
+
+ll_ht_irq:
+		li	a0, 6
+		move	a1, sp
+		j	ll_ht_smp_irq_handler
+
+ll_timer_irq:
+		li	a0, 7
+		move	a1, sp
+		j	do_IRQ