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] Fix smp barriers in test_and_{change,clear,set}_bit
  [MIPS] Fix IP27 build
  [MIPS] Fix modpost warnings by making start_secondary __cpuinit
  [MIPS] SMTC: Fix build error caused by nonsense code.
  [MIPS] SMTC: The MT ASE requires to initialize c0_pagemask and c0_wired.
  [MIPS] SMTC: Don't continue in set_vi_srs_handler on detected bad arguments.
  [MIPS] SMTC: Fix warning.
  [MIPS] Wire up utimensat, signalfd, timerfd, eventfd
  [MIPS] Atlas: Fix build.
  [MIPS] Always install the DSP exception handler.
  [MIPS] SMTC: Don't set and restore irqregs ptr from self_ipi.
  [MIPS] Fix KMODE for the R3000

arch/mips/kernel/scall32-o32.S

@@ -657,7 +657,11 @@ einval:	li	v0, -EINVAL
 	sys	sys_getcpu		3
 	sys	sys_epoll_pwait		6
 	sys	sys_ioprio_set		3
-	sys	sys_ioprio_get		2
+	sys	sys_ioprio_get		2	/* 4315 */
+	sys	sys_utimensat		4
+	sys	sys_signalfd		3
+	sys	sys_timerfd		4
+	sys	sys_eventfd		1
 	.endm
 
 	/* We pre-compute the number of _instruction_ bytes needed to

arch/mips/kernel/scall64-64.S

@@ -473,4 +473,8 @@ sys_call_table:
 	PTR	sys_epoll_pwait
 	PTR	sys_ioprio_set
 	PTR	sys_ioprio_get
+	PTR	sys_utimensat			/* 5275 */
+	PTR	sys_signalfd
+	PTR	sys_timerfd
+	PTR	sys_eventfd
 	.size	sys_call_table,.-sys_call_table

arch/mips/kernel/scall64-n32.S

@@ -399,4 +399,8 @@ EXPORT(sysn32_call_table)
 	PTR	compat_sys_epoll_pwait
 	PTR	sys_ioprio_set
 	PTR	sys_ioprio_get
+	PTR	compat_sys_utimensat
+	PTR	compat_sys_signalfd		/* 5280 */
+	PTR	compat_sys_timerfd
+	PTR	sys_eventfd
 	.size	sysn32_call_table,.-sysn32_call_table

arch/mips/kernel/scall64-o32.S

@@ -521,4 +521,8 @@ sys_call_table:
 	PTR	compat_sys_epoll_pwait
 	PTR	sys_ioprio_set
 	PTR	sys_ioprio_get			/* 4315 */
+	PTR	compat_sys_utimensat
+	PTR	compat_sys_signalfd
+	PTR	compat_sys_timerfd
+	PTR	sys_eventfd
 	.size	sys_call_table,.-sys_call_table

arch/mips/kernel/smp.c

@@ -68,7 +68,7 @@ extern ATTRIB_NORET void cpu_idle(void);
  * First C code run on the secondary CPUs after being started up by
  * the master.
  */
-asmlinkage void start_secondary(void)
+asmlinkage __cpuinit void start_secondary(void)
 {
 	unsigned int cpu;
 

arch/mips/kernel/smtc-asm.S

@@ -121,10 +121,7 @@ LEAF(self_ipi)
 	subu	t1,sp,PT_SIZE
 	sw	ra,PT_EPC(t1)
 	sw	a0,PT_PADSLOT4(t1)
-	LONG_L	s0, TI_REGS($28)
-	LONG_S	sp, TI_REGS($28)
 	la	t2,ipi_decode
-	LONG_S	s0, TI_REGS($28)
 	sw	t2,PT_PADSLOT5(t1)
 	/* Save pre-disable value of TCStatus */
 	sw	t0,PT_TCSTATUS(t1)

arch/mips/kernel/smtc.c

@@ -611,12 +611,12 @@ void smtc_cpus_done(void)
 int setup_irq_smtc(unsigned int irq, struct irqaction * new,
 			unsigned long hwmask)
 {
+#ifdef CONFIG_SMTC_IDLE_HOOK_DEBUG
 	unsigned int vpe = current_cpu_data.vpe_id;
 
-	irq_hwmask[irq] = hwmask;
-#ifdef CONFIG_SMTC_IDLE_HOOK_DEBUG
 	vpemask[vpe][irq - MIPSCPU_INT_BASE] = 1;
 #endif
+	irq_hwmask[irq] = hwmask;
 
 	return setup_irq(irq, new);
 }

arch/mips/kernel/traps.c

@@ -11,6 +11,7 @@
  * Copyright (C) 2000, 01 MIPS Technologies, Inc.
  * Copyright (C) 2002, 2003, 2004, 2005  Maciej W. Rozycki
  */
+#include <linux/bug.h>
 #include <linux/init.h>
 #include <linux/mm.h>
 #include <linux/module.h>
@@ -1190,8 +1191,8 @@ static void *set_vi_srs_handler(int n, vi_handler_t addr, int srs)
 
 		memcpy (b, &except_vec_vi, handler_len);
 #ifdef CONFIG_MIPS_MT_SMTC
-		if (n > 7)
-			printk("Vector index %d exceeds SMTC maximum\n", n);
+		BUG_ON(n > 7);	/* Vector index %d exceeds SMTC maximum. */
+
 		w = (u32 *)(b + mori_offset);
 		*w = (*w & 0xffff0000) | (0x100 << n);
 #endif /* CONFIG_MIPS_MT_SMTC */
@@ -1383,6 +1384,13 @@ void __init per_cpu_trap_init(void)
 		cpu_cache_init();
 		tlb_init();
 #ifdef CONFIG_MIPS_MT_SMTC
+	} else if (!secondaryTC) {
+		/*
+		 * First TC in non-boot VPE must do subset of tlb_init()
+		 * for MMU countrol registers.
+		 */
+		write_c0_pagemask(PM_DEFAULT_MASK);
+		write_c0_wired(0);
 	}
 #endif /* CONFIG_MIPS_MT_SMTC */
 }
@@ -1531,8 +1539,7 @@ void __init trap_init(void)
 	if (cpu_has_mipsmt)
 		set_except_vector(25, handle_mt);
 
-	if (cpu_has_dsp)
-		set_except_vector(26, handle_dsp);
+	set_except_vector(26, handle_dsp);
 
 	if (cpu_has_vce)
 		/* Special exception: R4[04]00 uses also the divec space. */

arch/mips/mips-boards/atlas/atlas_int.c

@@ -248,14 +248,13 @@ void __init arch_init_irq(void)
 	case MIPS_REVISION_CORID_CORE_24K:
 	case MIPS_REVISION_CORID_CORE_EMUL_MSC:
 		if (cpu_has_veic)
-			init_msc_irqs (MSC01E_INT_BASE,
+			init_msc_irqs (MSC01E_INT_BASE, MSC01E_INT_BASE,
 				       msc_eicirqmap, msc_nr_eicirqs);
 		else
-			init_msc_irqs (MSC01C_INT_BASE,
+			init_msc_irqs (MSC01E_INT_BASE, MSC01C_INT_BASE,
 				       msc_irqmap, msc_nr_irqs);
 	}
 
-
 	if (cpu_has_veic) {
 		set_vi_handler (MSC01E_INT_ATLAS, atlas_hw0_irqdispatch);
 		setup_irq (MSC01E_INT_BASE + MSC01E_INT_ATLAS, &atlasirq);

arch/mips/mips-boards/generic/time.c

@@ -88,8 +88,6 @@ irqreturn_t mips_timer_interrupt(int irq, void *dev_id)
 	 *  the general MIPS timer_interrupt routine.
 	 */
 
-	int vpflags;
-
 	/*
 	 * We could be here due to timer interrupt,
 	 * perf counter overflow, or both.
@@ -98,15 +96,6 @@ irqreturn_t mips_timer_interrupt(int irq, void *dev_id)
 		perf_irq();
 
 	if (read_c0_cause() & (1 << 30)) {
-		/* If timer interrupt, make it de-assert */
-		write_c0_compare (read_c0_count() - 1);
-		/*
-		 * DVPE is necessary so long as cross-VPE interrupts
-		 * are done via read-modify-write of Cause register.
-		 */
-		vpflags = dvpe();
-		clear_c0_cause(CPUCTR_IMASKBIT);
-		evpe(vpflags);
 		/*
 		 * There are things we only want to do once per tick
 		 * in an "MP" system.   One TC of each VPE will take
@@ -115,14 +104,13 @@ irqreturn_t mips_timer_interrupt(int irq, void *dev_id)
 		 * the tick on VPE 0 to run the full timer_interrupt().
 		 */
 		if (cpu_data[cpu].vpe_id == 0) {
-				timer_interrupt(irq, NULL);
-				smtc_timer_broadcast(cpu_data[cpu].vpe_id);
+			timer_interrupt(irq, NULL);
 		} else {
 			write_c0_compare(read_c0_count() +
 			                 (mips_hpt_frequency/HZ));
 			local_timer_interrupt(irq, dev_id);
-			smtc_timer_broadcast(cpu_data[cpu].vpe_id);
 		}
+		smtc_timer_broadcast(cpu_data[cpu].vpe_id);
 	}
 #else /* CONFIG_MIPS_MT_SMTC */
 	int r2 = cpu_has_mips_r2;

arch/mips/sgi-ip27/ip27-memory.c

@@ -517,7 +517,7 @@ void __init paging_init(void)
 		pfn_t start_pfn = slot_getbasepfn(node, 0);
 		pfn_t end_pfn = node_getmaxclick(node) + 1;
 
-		zones_size[ZONE_DMA] = end_pfn - start_pfn;
+		zones_size[ZONE_NORMAL] = end_pfn - start_pfn;
 		free_area_init_node(node, NODE_DATA(node),
 				zones_size, start_pfn, NULL);
 

include/asm-mips/bitops.h

@@ -238,10 +238,11 @@ static inline int test_and_set_bit(unsigned long nr,
 	volatile unsigned long *addr)
 {
 	unsigned short bit = nr & SZLONG_MASK;
+	unsigned long res;
 
 	if (cpu_has_llsc && R10000_LLSC_WAR) {
 		unsigned long *m = ((unsigned long *) addr) + (nr >> SZLONG_LOG);
-		unsigned long temp, res;
+		unsigned long temp;
 
 		__asm__ __volatile__(
 		"	.set	mips3					\n"
@@ -254,11 +255,9 @@ static inline int test_and_set_bit(unsigned long nr,
 		: "=&r" (temp), "=m" (*m), "=&r" (res)
 		: "r" (1UL << bit), "m" (*m)
 		: "memory");
-
-		return res != 0;
 	} else if (cpu_has_llsc) {
 		unsigned long *m = ((unsigned long *) addr) + (nr >> SZLONG_LOG);
-		unsigned long temp, res;
+		unsigned long temp;
 
 		__asm__ __volatile__(
 		"	.set	push					\n"
@@ -277,25 +276,22 @@ static inline int test_and_set_bit(unsigned long nr,
 		: "=&r" (temp), "=m" (*m), "=&r" (res)
 		: "r" (1UL << bit), "m" (*m)
 		: "memory");
-
-		return res != 0;
 	} else {
 		volatile unsigned long *a = addr;
 		unsigned long mask;
-		int retval;
 		unsigned long flags;
 
 		a += nr >> SZLONG_LOG;
 		mask = 1UL << bit;
 		raw_local_irq_save(flags);
-		retval = (mask & *a) != 0;
+		res = (mask & *a);
 		*a |= mask;
 		raw_local_irq_restore(flags);
-
-		return retval;
 	}
 
 	smp_mb();
+
+	return res != 0;
 }
 
 /*
@@ -310,6 +306,7 @@ static inline int test_and_clear_bit(unsigned long nr,
 	volatile unsigned long *addr)
 {
 	unsigned short bit = nr & SZLONG_MASK;
+	unsigned long res;
 
 	if (cpu_has_llsc && R10000_LLSC_WAR) {
 		unsigned long *m = ((unsigned long *) addr) + (nr >> SZLONG_LOG);
@@ -327,12 +324,10 @@ static inline int test_and_clear_bit(unsigned long nr,
 		: "=&r" (temp), "=m" (*m), "=&r" (res)
 		: "r" (1UL << bit), "m" (*m)
 		: "memory");
-
-		return res != 0;
 #ifdef CONFIG_CPU_MIPSR2
 	} else if (__builtin_constant_p(nr)) {
 		unsigned long *m = ((unsigned long *) addr) + (nr >> SZLONG_LOG);
-		unsigned long temp, res;
+		unsigned long temp;
 
 		__asm__ __volatile__(
 		"1:	" __LL	"%0, %1		# test_and_clear_bit	\n"
@@ -346,12 +341,10 @@ static inline int test_and_clear_bit(unsigned long nr,
 		: "=&r" (temp), "=m" (*m), "=&r" (res)
 		: "ri" (bit), "m" (*m)
 		: "memory");
-
-		return res;
 #endif
 	} else if (cpu_has_llsc) {
 		unsigned long *m = ((unsigned long *) addr) + (nr >> SZLONG_LOG);
-		unsigned long temp, res;
+		unsigned long temp;
 
 		__asm__ __volatile__(
 		"	.set	push					\n"
@@ -371,25 +364,22 @@ static inline int test_and_clear_bit(unsigned long nr,
 		: "=&r" (temp), "=m" (*m), "=&r" (res)
 		: "r" (1UL << bit), "m" (*m)
 		: "memory");
-
-		return res != 0;
 	} else {
 		volatile unsigned long *a = addr;
 		unsigned long mask;
-		int retval;
 		unsigned long flags;
 
 		a += nr >> SZLONG_LOG;
 		mask = 1UL << bit;
 		raw_local_irq_save(flags);
-		retval = (mask & *a) != 0;
+		res = (mask & *a);
 		*a &= ~mask;
 		raw_local_irq_restore(flags);
-
-		return retval;
 	}
 
 	smp_mb();
+
+	return res != 0;
 }
 
 /*
@@ -404,10 +394,11 @@ static inline int test_and_change_bit(unsigned long nr,
 	volatile unsigned long *addr)
 {
 	unsigned short bit = nr & SZLONG_MASK;
+	unsigned long res;
 
 	if (cpu_has_llsc && R10000_LLSC_WAR) {
 		unsigned long *m = ((unsigned long *) addr) + (nr >> SZLONG_LOG);
-		unsigned long temp, res;
+		unsigned long temp;
 
 		__asm__ __volatile__(
 		"	.set	mips3					\n"
@@ -420,11 +411,9 @@ static inline int test_and_change_bit(unsigned long nr,
 		: "=&r" (temp), "=m" (*m), "=&r" (res)
 		: "r" (1UL << bit), "m" (*m)
 		: "memory");
-
-		return res != 0;
 	} else if (cpu_has_llsc) {
 		unsigned long *m = ((unsigned long *) addr) + (nr >> SZLONG_LOG);
-		unsigned long temp, res;
+		unsigned long temp;
 
 		__asm__ __volatile__(
 		"	.set	push					\n"
@@ -443,24 +432,22 @@ static inline int test_and_change_bit(unsigned long nr,
 		: "=&r" (temp), "=m" (*m), "=&r" (res)
 		: "r" (1UL << bit), "m" (*m)
 		: "memory");
-
-		return res != 0;
 	} else {
 		volatile unsigned long *a = addr;
-		unsigned long mask, retval;
+		unsigned long mask;
 		unsigned long flags;
 
 		a += nr >> SZLONG_LOG;
 		mask = 1UL << bit;
 		raw_local_irq_save(flags);
-		retval = (mask & *a) != 0;
+		res = (mask & *a);
 		*a ^= mask;
 		raw_local_irq_restore(flags);
-
-		return retval;
 	}
 
 	smp_mb();
+
+	return res != 0;
 }
 
 #include <asm-generic/bitops/non-atomic.h>

include/asm-mips/stackframe.h

@@ -17,6 +17,18 @@
 #include <asm/mipsregs.h>
 #include <asm/asm-offsets.h>
 
+/*
+ * For SMTC kernel, global IE should be left set, and interrupts
+ * controlled exclusively via IXMT.
+ */
+#ifdef CONFIG_MIPS_MT_SMTC
+#define STATMASK 0x1e
+#elif defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX)
+#define STATMASK 0x3f
+#else
+#define STATMASK 0x1f
+#endif
+
 #ifdef CONFIG_MIPS_MT_SMTC
 #include <asm/mipsmtregs.h>
 #endif /* CONFIG_MIPS_MT_SMTC */
@@ -236,10 +248,10 @@
 		.set	reorder
 		.set	noat
 		mfc0	a0, CP0_STATUS
-		ori	a0, 0x1f
-		xori	a0, 0x1f
-		mtc0	a0, CP0_STATUS
 		li	v1, 0xff00
+		ori	a0, STATMASK
+		xori	a0, STATMASK
+		mtc0	a0, CP0_STATUS
 		and	a0, v1
 		LONG_L	v0, PT_STATUS(sp)
 		nor	v1, $0, v1
@@ -249,10 +261,6 @@
 		LONG_L	$31, PT_R31(sp)
 		LONG_L	$28, PT_R28(sp)
 		LONG_L	$25, PT_R25(sp)
-#ifdef CONFIG_64BIT
-		LONG_L	$8, PT_R8(sp)
-		LONG_L	$9, PT_R9(sp)
-#endif
 		LONG_L	$7,  PT_R7(sp)
 		LONG_L	$6,  PT_R6(sp)
 		LONG_L	$5,  PT_R5(sp)
@@ -273,16 +281,6 @@
 		.endm
 
 #else
-/*
- * For SMTC kernel, global IE should be left set, and interrupts
- * controlled exclusively via IXMT.
- */
-
-#ifdef CONFIG_MIPS_MT_SMTC
-#define STATMASK 0x1e
-#else
-#define STATMASK 0x1f
-#endif
 		.macro	RESTORE_SOME
 		.set	push
 		.set	reorder
@@ -385,9 +383,9 @@
 		.macro	CLI
 #if !defined(CONFIG_MIPS_MT_SMTC)
 		mfc0	t0, CP0_STATUS
-		li	t1, ST0_CU0 | 0x1f
+		li	t1, ST0_CU0 | STATMASK
 		or	t0, t1
-		xori	t0, 0x1f
+		xori	t0, STATMASK
 		mtc0	t0, CP0_STATUS
 #else /* CONFIG_MIPS_MT_SMTC */
 		/*
@@ -420,9 +418,9 @@
 		.macro	STI
 #if !defined(CONFIG_MIPS_MT_SMTC)
 		mfc0	t0, CP0_STATUS
-		li	t1, ST0_CU0 | 0x1f
+		li	t1, ST0_CU0 | STATMASK
 		or	t0, t1
-		xori	t0, 0x1e
+		xori	t0, STATMASK & ~1
 		mtc0	t0, CP0_STATUS
 #else /* CONFIG_MIPS_MT_SMTC */
 		/*
@@ -451,7 +449,8 @@
 		.endm
 
 /*
- * Just move to kernel mode and leave interrupts as they are.
+ * Just move to kernel mode and leave interrupts as they are.  Note
+ * for the R3000 this means copying the previous enable from IEp.
  * Set cp0 enable bit as sign that we're running on the kernel stack
  */
 		.macro	KMODE
@@ -482,9 +481,14 @@
 		move	ra, t0
 #endif /* CONFIG_MIPS_MT_SMTC */
 		mfc0	t0, CP0_STATUS
-		li	t1, ST0_CU0 | 0x1e
+		li	t1, ST0_CU0 | (STATMASK & ~1)
+#if defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX)
+		andi	t2, t0, ST0_IEP
+		srl	t2, 2
+		or	t0, t2
+#endif
 		or	t0, t1
-		xori	t0, 0x1e
+		xori	t0, STATMASK & ~1
 		mtc0	t0, CP0_STATUS
 #ifdef CONFIG_MIPS_MT_SMTC
 		_ehb

include/asm-mips/unistd.h

@@ -336,16 +336,20 @@
 #define __NR_epoll_pwait		(__NR_Linux + 313)
 #define __NR_ioprio_set			(__NR_Linux + 314)
 #define __NR_ioprio_get			(__NR_Linux + 315)
+#define __NR_utimensat			(__NR_Linux + 316)
+#define __NR_signalfd			(__NR_Linux + 317)
+#define __NR_timerfd			(__NR_Linux + 318)
+#define __NR_eventfd			(__NR_Linux + 319)
 
 /*
  * Offset of the last Linux o32 flavoured syscall
  */
-#define __NR_Linux_syscalls		315
+#define __NR_Linux_syscalls		319
 
 #endif /* _MIPS_SIM == _MIPS_SIM_ABI32 */
 
 #define __NR_O32_Linux			4000
-#define __NR_O32_Linux_syscalls		315
+#define __NR_O32_Linux_syscalls		319
 
 #if _MIPS_SIM == _MIPS_SIM_ABI64
 
@@ -628,16 +632,20 @@
 #define __NR_epoll_pwait		(__NR_Linux + 272)
 #define __NR_ioprio_set			(__NR_Linux + 273)
 #define __NR_ioprio_get			(__NR_Linux + 274)
+#define __NR_utimensat			(__NR_Linux + 275)
+#define __NR_signalfd			(__NR_Linux + 276)
+#define __NR_timerfd			(__NR_Linux + 277)
+#define __NR_eventfd			(__NR_Linux + 278)
 
 /*
  * Offset of the last Linux 64-bit flavoured syscall
  */
-#define __NR_Linux_syscalls		274
+#define __NR_Linux_syscalls		278
 
 #endif /* _MIPS_SIM == _MIPS_SIM_ABI64 */
 
 #define __NR_64_Linux			5000
-#define __NR_64_Linux_syscalls		274
+#define __NR_64_Linux_syscalls		278
 
 #if _MIPS_SIM == _MIPS_SIM_NABI32
 
@@ -924,16 +932,20 @@
 #define __NR_epoll_pwait		(__NR_Linux + 276)
 #define __NR_ioprio_set			(__NR_Linux + 277)
 #define __NR_ioprio_get			(__NR_Linux + 278)
+#define __NR_utimensat			(__NR_Linux + 279)
+#define __NR_signalfd			(__NR_Linux + 280)
+#define __NR_timerfd			(__NR_Linux + 281)
+#define __NR_eventfd			(__NR_Linux + 282)
 
 /*
  * Offset of the last N32 flavoured syscall
  */
-#define __NR_Linux_syscalls		278
+#define __NR_Linux_syscalls		282
 
 #endif /* _MIPS_SIM == _MIPS_SIM_NABI32 */
 
 #define __NR_N32_Linux			6000
-#define __NR_N32_Linux_syscalls		278
+#define __NR_N32_Linux_syscalls		282
 
 #ifdef __KERNEL__