Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus

Pull MIPS update from Ralf Baechle:
 "This is the MIPS update for 3.7.

  A fair chunk of them are platform updates to the Cavium Octeon SOC
  (which involves machine generated header files of considerable size),
  Atheros ATH79xx, RMI aka Netlogic aka Broadcom XLP, Broadcom BCM63xx
  platforms.

  Support for the commercial MIPS simulator MIPSsim has been removed as
  MIPS Technologies is shifting away from this product and Qemu is
  offering various more powerful platforms.  The generic MIPS code can
  now also probe for no-execute / write-only TLB features implemented
  without the full SmartMIPS extension as permitted by the latest MIPS
  processor architecture.  Lots of small changes to generic code."

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (78 commits)
  MIPS: ath79: Fix CPU/DDR frequency calculation for SRIF PLLs
  MIPS: ath79: use correct fractional dividers for {CPU,DDR}_PLL on AR934x
  MIPS: BCM63XX: Properly handle mac address octet overflow
  MIPS: Kconfig: Avoid build errors by hiding USE_OF from the user.
  MIPS: Replace `-' in defconfig filename wth `_' for consistency.
  MIPS: Wire kcmp syscall.
  MIPS: MIPSsim: Remove the MIPSsim platform.
  MIPS: NOTIFY_RESUME is not needed in TIF masks
  MIPS: Merge the identical "return from syscall" per-ABI code
  MIPS: Unobfuscate _TIF..._MASK
  MIPS: Prevent hitting do_notify_resume() with !user_mode(regs).
  MIPS: Replace 'kernel_uses_smartmips_rixi' with 'cpu_has_rixi'.
  MIPS: Add base architecture support for RI and XI.
  MIPS: Optimise TLB handlers for MIPS32/64 R2 cores.
  MIPS: uasm: Add INS and EXT instructions.
  MIPS: Avoid pipeline stalls on some MIPS32R2 cores.
  MIPS: Make VPE count to be one-based.
  MIPS: Add new end of interrupt functionality for GIC.
  MIPS: Add EIC support for GIC.
  MIPS: Code clean-ups for the GIC.
  ...

1 files changed, 51 insertions, 31 deletions

diff --git a/arch/mips/lantiq/irq.c b/arch/mips/lantiq/irq.c
index 57c1a4e..f36acd1 100644
--- a/arch/mips/lantiq/irq.c
+++ b/arch/mips/lantiq/irq.c
@@ -55,8 +55,8 @@
  */
 #define LTQ_ICU_EBU_IRQ		22
 
-#define ltq_icu_w32(x, y)	ltq_w32((x), ltq_icu_membase + (y))
-#define ltq_icu_r32(x)		ltq_r32(ltq_icu_membase + (x))
+#define ltq_icu_w32(m, x, y)	ltq_w32((x), ltq_icu_membase[m] + (y))
+#define ltq_icu_r32(m, x)	ltq_r32(ltq_icu_membase[m] + (x))
 
 #define ltq_eiu_w32(x, y)	ltq_w32((x), ltq_eiu_membase + (y))
 #define ltq_eiu_r32(x)		ltq_r32(ltq_eiu_membase + (x))
@@ -82,17 +82,18 @@ static unsigned short ltq_eiu_irq[MAX_EIU] = {
 };
 
 static int exin_avail;
-static void __iomem *ltq_icu_membase;
+static void __iomem *ltq_icu_membase[MAX_IM];
 static void __iomem *ltq_eiu_membase;
+static struct irq_domain *ltq_domain;
 
 void ltq_disable_irq(struct irq_data *d)
 {
 	u32 ier = LTQ_ICU_IM0_IER;
 	int offset = d->hwirq - MIPS_CPU_IRQ_CASCADE;
+	int im = offset / INT_NUM_IM_OFFSET;
 
-	ier += LTQ_ICU_OFFSET * (offset / INT_NUM_IM_OFFSET);
 	offset %= INT_NUM_IM_OFFSET;
-	ltq_icu_w32(ltq_icu_r32(ier) & ~BIT(offset), ier);
+	ltq_icu_w32(im, ltq_icu_r32(im, ier) & ~BIT(offset), ier);
 }
 
 void ltq_mask_and_ack_irq(struct irq_data *d)
@@ -100,32 +101,31 @@ void ltq_mask_and_ack_irq(struct irq_data *d)
 	u32 ier = LTQ_ICU_IM0_IER;
 	u32 isr = LTQ_ICU_IM0_ISR;
 	int offset = d->hwirq - MIPS_CPU_IRQ_CASCADE;
+	int im = offset / INT_NUM_IM_OFFSET;
 
-	ier += LTQ_ICU_OFFSET * (offset / INT_NUM_IM_OFFSET);
-	isr += LTQ_ICU_OFFSET * (offset / INT_NUM_IM_OFFSET);
 	offset %= INT_NUM_IM_OFFSET;
-	ltq_icu_w32(ltq_icu_r32(ier) & ~BIT(offset), ier);
-	ltq_icu_w32(BIT(offset), isr);
+	ltq_icu_w32(im, ltq_icu_r32(im, ier) & ~BIT(offset), ier);
+	ltq_icu_w32(im, BIT(offset), isr);
 }
 
 static void ltq_ack_irq(struct irq_data *d)
 {
 	u32 isr = LTQ_ICU_IM0_ISR;
 	int offset = d->hwirq - MIPS_CPU_IRQ_CASCADE;
+	int im = offset / INT_NUM_IM_OFFSET;
 
-	isr += LTQ_ICU_OFFSET * (offset / INT_NUM_IM_OFFSET);
 	offset %= INT_NUM_IM_OFFSET;
-	ltq_icu_w32(BIT(offset), isr);
+	ltq_icu_w32(im, BIT(offset), isr);
 }
 
 void ltq_enable_irq(struct irq_data *d)
 {
 	u32 ier = LTQ_ICU_IM0_IER;
 	int offset = d->hwirq - MIPS_CPU_IRQ_CASCADE;
+	int im = offset / INT_NUM_IM_OFFSET;
 
-	ier += LTQ_ICU_OFFSET  * (offset / INT_NUM_IM_OFFSET);
 	offset %= INT_NUM_IM_OFFSET;
-	ltq_icu_w32(ltq_icu_r32(ier) | BIT(offset), ier);
+	ltq_icu_w32(im, ltq_icu_r32(im, ier) | BIT(offset), ier);
 }
 
 static unsigned int ltq_startup_eiu_irq(struct irq_data *d)
@@ -192,7 +192,7 @@ static void ltq_hw_irqdispatch(int module)
 {
 	u32 irq;
 
-	irq = ltq_icu_r32(LTQ_ICU_IM0_IOSR + (module * LTQ_ICU_OFFSET));
+	irq = ltq_icu_r32(module, LTQ_ICU_IM0_IOSR);
 	if (irq == 0)
 		return;
 
@@ -220,10 +220,14 @@ DEFINE_HWx_IRQDISPATCH(2)
 DEFINE_HWx_IRQDISPATCH(3)
 DEFINE_HWx_IRQDISPATCH(4)
 
+#if MIPS_CPU_TIMER_IRQ == 7
 static void ltq_hw5_irqdispatch(void)
 {
 	do_IRQ(MIPS_CPU_TIMER_IRQ);
 }
+#else
+DEFINE_HWx_IRQDISPATCH(5)
+#endif
 
 #ifdef CONFIG_MIPS_MT_SMP
 void __init arch_init_ipiirq(int irq, struct irqaction *action)
@@ -271,11 +275,11 @@ asmlinkage void plat_irq_dispatch(void)
 	unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM;
 	unsigned int i;
 
-	if (pending & CAUSEF_IP7) {
+	if ((MIPS_CPU_TIMER_IRQ == 7) && (pending & CAUSEF_IP7)) {
 		do_IRQ(MIPS_CPU_TIMER_IRQ);
 		goto out;
 	} else {
-		for (i = 0; i < 5; i++) {
+		for (i = 0; i < MAX_IM; i++) {
 			if (pending & (CAUSEF_IP2 << i)) {
 				ltq_hw_irqdispatch(i);
 				goto out;
@@ -293,6 +297,9 @@ static int icu_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hw)
 	struct irq_chip *chip = &ltq_irq_type;
 	int i;
 
+	if (hw < MIPS_CPU_IRQ_CASCADE)
+		return 0;
+
 	for (i = 0; i < exin_avail; i++)
 		if (hw == ltq_eiu_irq[i])
 			chip = &ltq_eiu_type;
@@ -318,19 +325,23 @@ int __init icu_of_init(struct device_node *node, struct device_node *parent)
 	struct resource res;
 	int i;
 
-	if (of_address_to_resource(node, 0, &res))
-		panic("Failed to get icu memory range");
+	for (i = 0; i < MAX_IM; i++) {
+		if (of_address_to_resource(node, i, &res))
+			panic("Failed to get icu memory range");
 
-	if (request_mem_region(res.start, resource_size(&res), res.name) < 0)
-		pr_err("Failed to request icu memory");
+		if (request_mem_region(res.start, resource_size(&res),
+					res.name) < 0)
+			pr_err("Failed to request icu memory");
 
-	ltq_icu_membase = ioremap_nocache(res.start, resource_size(&res));
-	if (!ltq_icu_membase)
-		panic("Failed to remap icu memory");
+		ltq_icu_membase[i] = ioremap_nocache(res.start,
+					resource_size(&res));
+		if (!ltq_icu_membase[i])
+			panic("Failed to remap icu memory");
+	}
 
 	/* the external interrupts are optional and xway only */
 	eiu_node = of_find_compatible_node(NULL, NULL, "lantiq,eiu");
-	if (eiu_node && of_address_to_resource(eiu_node, 0, &res)) {
+	if (eiu_node && !of_address_to_resource(eiu_node, 0, &res)) {
 		/* find out how many external irq sources we have */
 		const __be32 *count = of_get_property(node,
 							"lantiq,count",	NULL);
@@ -351,17 +362,17 @@ int __init icu_of_init(struct device_node *node, struct device_node *parent)
 	}
 
 	/* turn off all irqs by default */
-	for (i = 0; i < 5; i++) {
+	for (i = 0; i < MAX_IM; i++) {
 		/* make sure all irqs are turned off by default */
-		ltq_icu_w32(0, LTQ_ICU_IM0_IER + (i * LTQ_ICU_OFFSET));
+		ltq_icu_w32(i, 0, LTQ_ICU_IM0_IER);
 		/* clear all possibly pending interrupts */
-		ltq_icu_w32(~0, LTQ_ICU_IM0_ISR + (i * LTQ_ICU_OFFSET));
+		ltq_icu_w32(i, ~0, LTQ_ICU_IM0_ISR);
 	}
 
 	mips_cpu_irq_init();
 
-	for (i = 2; i <= 6; i++)
-		setup_irq(i, &cascade);
+	for (i = 0; i < MAX_IM; i++)
+		setup_irq(i + 2, &cascade);
 
 	if (cpu_has_vint) {
 		pr_info("Setting up vectored interrupts\n");
@@ -373,7 +384,8 @@ int __init icu_of_init(struct device_node *node, struct device_node *parent)
 		set_vi_handler(7, ltq_hw5_irqdispatch);
 	}
 
-	irq_domain_add_linear(node, 6 * INT_NUM_IM_OFFSET,
+	ltq_domain = irq_domain_add_linear(node,
+		(MAX_IM * INT_NUM_IM_OFFSET) + MIPS_CPU_IRQ_CASCADE,
 		&irq_domain_ops, 0);
 
 #if defined(CONFIG_MIPS_MT_SMP)
@@ -397,12 +409,20 @@ int __init icu_of_init(struct device_node *node, struct device_node *parent)
 
 	/* tell oprofile which irq to use */
 	cp0_perfcount_irq = LTQ_PERF_IRQ;
+
+	/*
+	 * if the timer irq is not one of the mips irqs we need to
+	 * create a mapping
+	 */
+	if (MIPS_CPU_TIMER_IRQ != 7)
+		irq_create_mapping(ltq_domain, MIPS_CPU_TIMER_IRQ);
+
 	return 0;
 }
 
 unsigned int __cpuinit get_c0_compare_int(void)
 {
-	return CP0_LEGACY_COMPARE_IRQ;
+	return MIPS_CPU_TIMER_IRQ;
 }
 
 static struct of_device_id __initdata of_irq_ids[] = {