MIPS: BCM63XX: Add external irq support for non 6348 CPUs.

Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2899/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/bcm63xx/setup.c b/arch/mips/bcm63xx/setup.c
index 04a3499..d209f85 100644
--- a/arch/mips/bcm63xx/setup.c
+++ b/arch/mips/bcm63xx/setup.c
@@ -63,13 +63,33 @@
 
 void bcm63xx_machine_reboot(void)
 {
-	u32 reg;
+	u32 reg, perf_regs[2] = { 0, 0 };
+	unsigned int i;
 
 	/* mask and clear all external irq */
-	reg = bcm_perf_readl(PERF_EXTIRQ_CFG_REG);
-	reg &= ~EXTIRQ_CFG_MASK_ALL;
-	reg |= EXTIRQ_CFG_CLEAR_ALL;
-	bcm_perf_writel(reg, PERF_EXTIRQ_CFG_REG);
+	switch (bcm63xx_get_cpu_id()) {
+	case BCM6338_CPU_ID:
+		perf_regs[0] = PERF_EXTIRQ_CFG_REG_6338;
+		break;
+	case BCM6348_CPU_ID:
+		perf_regs[0] = PERF_EXTIRQ_CFG_REG_6348;
+		break;
+	case BCM6358_CPU_ID:
+		perf_regs[0] = PERF_EXTIRQ_CFG_REG_6358;
+		break;
+	}
+
+	for (i = 0; i < 2; i++) {
+		reg = bcm_perf_readl(perf_regs[i]);
+		if (BCMCPU_IS_6348()) {
+			reg &= ~EXTIRQ_CFG_MASK_ALL_6348;
+			reg |= EXTIRQ_CFG_CLEAR_ALL_6348;
+		} else {
+			reg &= ~EXTIRQ_CFG_MASK_ALL;
+			reg |= EXTIRQ_CFG_CLEAR_ALL;
+		}
+		bcm_perf_writel(reg, perf_regs[i]);
+	}
 
 	if (BCMCPU_IS_6348() && (bcm63xx_get_cpu_rev() == 0xa1))
 		bcm6348_a1_reboot();