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

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  [MIPS] Oprofile: Fix computation of number of counters.
  [MIPS] Alchemy: fix IRQ bases
  [MIPS] Alchemy: replace ffs() with __ffs()
  [MIPS] BCM1480: Fix interrupt routing, take 2.

5 files changed, 52 insertions, 17 deletions

diff --git a/arch/mips/au1000/common/dbdma.c b/arch/mips/au1000/common/dbdma.c
index 9d6ad43fded..edf91f41a78 100644
--- a/arch/mips/au1000/common/dbdma.c
+++ b/arch/mips/au1000/common/dbdma.c
@@ -859,7 +859,7 @@ dbdma_interrupt(int irq, void *dev_id)
 
 	intstat = dbdma_gptr->ddma_intstat;
 	au_sync();
-	chan_index = ffs(intstat);
+	chan_index = __ffs(intstat);
 
 	ctp = chan_tab_ptr[chan_index];
 	cp = ctp->chan_ptr;
diff --git a/arch/mips/au1000/common/irq.c b/arch/mips/au1000/common/irq.c
index ddfb7f0a17a..3c7714f057a 100644
--- a/arch/mips/au1000/common/irq.c
+++ b/arch/mips/au1000/common/irq.c
@@ -462,9 +462,9 @@ static void intc0_req0_irqdispatch(void)
 		return;
 	}
 #endif
-	bit = ffs(intc0_req0);
+	bit = __ffs(intc0_req0);
 	intc0_req0 &= ~(1 << bit);
-	do_IRQ(MIPS_CPU_IRQ_BASE + bit);
+	do_IRQ(AU1000_INTC0_INT_BASE + bit);
 }
 
 
@@ -478,9 +478,9 @@ static void intc0_req1_irqdispatch(void)
 	if (!intc0_req1)
 		return;
 
-	bit = ffs(intc0_req1);
+	bit = __ffs(intc0_req1);
 	intc0_req1 &= ~(1 << bit);
-	do_IRQ(bit);
+	do_IRQ(AU1000_INTC0_INT_BASE + bit);
 }
 
 
@@ -498,9 +498,9 @@ static void intc1_req0_irqdispatch(void)
 	if (!intc1_req0)
 		return;
 
-	bit = ffs(intc1_req0);
+	bit = __ffs(intc1_req0);
 	intc1_req0 &= ~(1 << bit);
-	do_IRQ(MIPS_CPU_IRQ_BASE + 32 + bit);
+	do_IRQ(AU1000_INTC1_INT_BASE + bit);
 }
 
 
@@ -514,9 +514,9 @@ static void intc1_req1_irqdispatch(void)
 	if (!intc1_req1)
 		return;
 
-	bit = ffs(intc1_req1);
+	bit = __ffs(intc1_req1);
 	intc1_req1 &= ~(1 << bit);
-	do_IRQ(MIPS_CPU_IRQ_BASE + 32 + bit);
+	do_IRQ(AU1000_INTC1_INT_BASE + bit);
 }
 
 asmlinkage void plat_irq_dispatch(void)
diff --git a/arch/mips/au1000/pb1200/irqmap.c b/arch/mips/au1000/pb1200/irqmap.c
index c096be4ed4e..8fcd0df86f9 100644
--- a/arch/mips/au1000/pb1200/irqmap.c
+++ b/arch/mips/au1000/pb1200/irqmap.c
@@ -74,7 +74,7 @@ irqreturn_t pb1200_cascade_handler( int irq, void *dev_id)
 	bcsr->int_status = bisr;
 	for( ; bisr; bisr &= (bisr-1) )
 	{
-		extirq_nr = PB1200_INT_BEGIN + ffs(bisr);
+		extirq_nr = PB1200_INT_BEGIN + __ffs(bisr);
 		/* Ack and dispatch IRQ */
 		do_IRQ(extirq_nr);
 	}
diff --git a/arch/mips/oprofile/op_model_mipsxx.c b/arch/mips/oprofile/op_model_mipsxx.c
index 423bc2c473d..bdfa07aecd9 100644
--- a/arch/mips/oprofile/op_model_mipsxx.c
+++ b/arch/mips/oprofile/op_model_mipsxx.c
@@ -6,6 +6,7 @@
  * Copyright (C) 2004, 05, 06 by Ralf Baechle
  * Copyright (C) 2005 by MIPS Technologies, Inc.
  */
+#include <linux/cpumask.h>
 #include <linux/oprofile.h>
 #include <linux/interrupt.h>
 #include <linux/smp.h>
@@ -33,11 +34,45 @@
 #ifdef CONFIG_MIPS_MT_SMP
 #define WHAT		(M_TC_EN_VPE | M_PERFCTL_VPEID(smp_processor_id()))
 #define vpe_id()	smp_processor_id()
+
+/*
+ * The number of bits to shift to convert between counters per core and
+ * counters per VPE.  There is no reasonable interface atm to obtain the
+ * number of VPEs used by Linux and in the 34K this number is fixed to two
+ * anyways so we hardcore a few things here for the moment.  The way it's
+ * done here will ensure that oprofile VSMP kernel will run right on a lesser
+ * core like a 24K also or with maxcpus=1.
+ */
+static inline unsigned int vpe_shift(void)
+{
+	if (num_possible_cpus() > 1)
+		return 1;
+
+	return 0;
+}
+
 #else
+
 #define WHAT		0
 #define vpe_id()	0
+
+static inline unsigned int vpe_shift(void)
+{
+	return 0;
+}
+
 #endif
 
+static inline unsigned int counters_total_to_per_cpu(unsigned int counters)
+{
+	return counters >> vpe_shift();
+}
+
+static inline unsigned int counters_per_cpu_to_total(unsigned int counters)
+{
+	return counters << vpe_shift();
+}
+
 #define __define_perf_accessors(r, n, np)				\
 									\
 static inline unsigned int r_c0_ ## r ## n(void)			\
@@ -269,9 +304,7 @@ static int __init mipsxx_init(void)
 
 	reset_counters(counters);
 
-#ifdef CONFIG_MIPS_MT_SMP
-	counters >>= 1;
-#endif
+	counters = counters_total_to_per_cpu(counters);
 
 	op_model_mipsxx_ops.num_counters = counters;
 	switch (current_cpu_type()) {
@@ -330,9 +363,8 @@ static int __init mipsxx_init(void)
 static void mipsxx_exit(void)
 {
 	int counters = op_model_mipsxx_ops.num_counters;
-#ifdef CONFIG_MIPS_MT_SMP
-	counters <<= 1;
-#endif
+
+	counters = counters_per_cpu_to_total(counters);
 	reset_counters(counters);
 
 	perf_irq = null_perf_irq;
diff --git a/arch/mips/pci/pci-bcm1480.c b/arch/mips/pci/pci-bcm1480.c
index bc647cb7729..47f316c86ab 100644
--- a/arch/mips/pci/pci-bcm1480.c
+++ b/arch/mips/pci/pci-bcm1480.c
@@ -76,7 +76,10 @@ static inline void WRITECFG32(u32 addr, u32 data)
 
 int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
-	return K_BCM1480_INT_PCI_INTA + pin;
+	if (pin == 0)
+		return -1;
+
+	return K_BCM1480_INT_PCI_INTA - 1 + pin;
 }
 
 /* Do platform specific device initialization at pci_enable_device() time */