20 files changed, 301 insertions, 290 deletions

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 2f2ce0c28bc0..455bd1f560aa 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -22,6 +22,7 @@ config MACH_ALCHEMY
 config BASLER_EXCITE
         bool "Basler eXcite smart camera"
         select CEVT_R4K
+        select CSRC_R4K
         select DMA_COHERENT
         select HW_HAS_PCI
         select IRQ_CPU
@@ -49,6 +50,7 @@ config BASLER_EXCITE_PROTOTYPE
 config BCM47XX
         bool "BCM47XX based boards"
         select CEVT_R4K
+        select CSRC_R4K
         select DMA_NONCOHERENT
         select HW_HAS_PCI
         select IRQ_CPU
@@ -66,6 +68,7 @@ config BCM47XX
 config MIPS_COBALT
         bool "Cobalt Server"
         select CEVT_R4K
+        select CSRC_R4K
         select CEVT_GT641XX
         select DMA_NONCOHERENT
         select HW_HAS_PCI
@@ -85,6 +88,7 @@ config MACH_DECSTATION
         bool "DECstations"
         select BOOT_ELF32
         select CEVT_R4K
+        select CSRC_R4K
         select DMA_NONCOHERENT
         select NO_IOPORT
         select IRQ_CPU
@@ -117,6 +121,7 @@ config MACH_JAZZ
         select ARC32
         select ARCH_MAY_HAVE_PC_FDC
         select CEVT_R4K
+        select CSRC_R4K
         select GENERIC_ISA_DMA
         select IRQ_CPU
         select I8253
@@ -137,6 +142,7 @@ config MACH_JAZZ
 config LASAT
         bool "LASAT Networks platforms"
         select CEVT_R4K
+        select CSRC_R4K
         select DMA_NONCOHERENT
         select SYS_HAS_EARLY_PRINTK
         select HW_HAS_PCI
@@ -154,6 +160,7 @@ config LEMOTE_FULONG
         bool "Lemote Fulong mini-PC"
         select ARCH_SPARSEMEM_ENABLE
         select CEVT_R4K
+        select CSRC_R4K
         select SYS_HAS_CPU_LOONGSON2
         select DMA_NONCOHERENT
         select BOOT_ELF32
@@ -179,6 +186,7 @@ config MIPS_ATLAS
         bool "MIPS Atlas board"
         select BOOT_ELF32
         select CEVT_R4K
+        select CSRC_R4K
         select DMA_NONCOHERENT
         select SYS_HAS_EARLY_PRINTK
         select IRQ_CPU
@@ -210,6 +218,7 @@ config MIPS_MALTA
         select ARCH_MAY_HAVE_PC_FDC
         select BOOT_ELF32
         select CEVT_R4K
+        select CSRC_R4K
         select DMA_NONCOHERENT
         select GENERIC_ISA_DMA
         select IRQ_CPU
@@ -241,6 +250,7 @@ config MIPS_MALTA
 config MIPS_SEAD
         bool "MIPS SEAD board"
         select CEVT_R4K
+        select CSRC_R4K
         select IRQ_CPU
         select DMA_NONCOHERENT
         select SYS_HAS_EARLY_PRINTK
@@ -260,6 +270,7 @@ config MIPS_SEAD
 config MIPS_SIM
         bool 'MIPS simulator (MIPSsim)'
         select CEVT_R4K
+        select CSRC_R4K
         select DMA_NONCOHERENT
         select SYS_HAS_EARLY_PRINTK
         select IRQ_CPU
@@ -278,6 +289,7 @@ config MIPS_SIM
 config MARKEINS
         bool "NEC EMMA2RH Mark-eins"
         select CEVT_R4K
+        select CSRC_R4K
         select DMA_NONCOHERENT
         select HW_HAS_PCI
         select IRQ_CPU
@@ -293,6 +305,7 @@ config MARKEINS
 config MACH_VR41XX
         bool "NEC VR4100 series based machines"
         select CEVT_R4K
+        select CSRC_R4K
         select SYS_HAS_CPU_VR41XX
         select GENERIC_HARDIRQS_NO__DO_IRQ
 
@@ -330,6 +343,7 @@ config PMC_MSP
 config PMC_YOSEMITE
         bool "PMC-Sierra Yosemite eval board"
         select CEVT_R4K
+        select CSRC_R4K
         select DMA_COHERENT
         select HW_HAS_PCI
         select IRQ_CPU
@@ -351,6 +365,7 @@ config PMC_YOSEMITE
 config QEMU
         bool "Qemu"
         select CEVT_R4K
+        select CSRC_R4K
         select DMA_COHERENT
         select GENERIC_ISA_DMA
         select HAVE_STD_PC_SERIAL_PORT
@@ -382,9 +397,11 @@ config SGI_IP22
         select ARC32
         select BOOT_ELF32
         select CEVT_R4K
+        select CSRC_R4K
         select DMA_NONCOHERENT
         select HW_HAS_EISA
         select I8253
+        select I8259
         select IP22_CPU_SCACHE
         select IRQ_CPU
         select GENERIC_ISA_DMA_SUPPORT_BROKEN
@@ -427,6 +444,7 @@ config SGI_IP32
         select ARC32
         select BOOT_ELF32
         select CEVT_R4K
+        select CSRC_R4K
         select DMA_NONCOHERENT
         select HW_HAS_PCI
         select IRQ_CPU
@@ -498,6 +516,7 @@ config SIBYTE_SWARM
         select SYS_SUPPORTS_HIGHMEM
         select SYS_SUPPORTS_KGDB
         select SYS_SUPPORTS_LITTLE_ENDIAN
+        select ZONE_DMA32 if 64BIT
 
 config SIBYTE_LITTLESUR
         bool "Sibyte BCM91250C2-LittleSur"
@@ -548,6 +567,7 @@ config SIBYTE_BIGSUR
         select SYS_SUPPORTS_BIG_ENDIAN
         select SYS_SUPPORTS_HIGHMEM
         select SYS_SUPPORTS_LITTLE_ENDIAN
+        select ZONE_DMA32 if 64BIT
 
 config SNI_RM
         bool "SNI RM200/300/400"
@@ -556,6 +576,7 @@ config SNI_RM
         select ARCH_MAY_HAVE_PC_FDC
         select BOOT_ELF32
         select CEVT_R4K
+        select CSRC_R4K
         select DMA_NONCOHERENT
         select GENERIC_ISA_DMA
         select HW_HAS_EISA
@@ -599,6 +620,7 @@ config TOSHIBA_JMR3927
 config TOSHIBA_RBTX4927
         bool "Toshiba RBTX49[23]7 board"
         select CEVT_R4K
+        select CSRC_R4K
         select CEVT_TXX9
         select DMA_NONCOHERENT
         select HAS_TXX9_SERIAL
@@ -621,6 +643,7 @@ config TOSHIBA_RBTX4927
 config TOSHIBA_RBTX4938
         bool "Toshiba RBTX4938 board"
         select CEVT_R4K
+        select CSRC_R4K
         select CEVT_TXX9
         select DMA_NONCOHERENT
         select HAS_TXX9_SERIAL
@@ -642,6 +665,7 @@ config TOSHIBA_RBTX4938
 config WR_PPMC
         bool "Wind River PPMC board"
         select CEVT_R4K
+        select CSRC_R4K
         select IRQ_CPU
         select BOOT_ELF32
         select DMA_NONCOHERENT
@@ -752,6 +776,9 @@ config CEVT_TXX9
 config CSRC_BCM1480
         bool
 
+config CSRC_R4K
+        bool
+
 config CSRC_SB1250
         bool
 
@@ -1640,6 +1667,9 @@ config ARCH_DISCONTIGMEM_ENABLE
           or have huge holes in the physical address space for other reasons.
           See <file:Documentation/vm/numa> for more.
 
+config ARCH_POPULATES_NODE_MAP
+        def_bool y
+
 config ARCH_SPARSEMEM_ENABLE
         bool
         select SPARSEMEM_STATIC
@@ -1945,6 +1975,9 @@ config I8253
 config PCSPEAKER
         bool
 
+config ZONE_DMA32
+        bool
+
 source "drivers/pcmcia/Kconfig"
 
 source "drivers/pci/hotplug/Kconfig"
diff --git a/arch/mips/au1000/Kconfig b/arch/mips/au1000/Kconfig
index b36cec58a9a8..05d1354aad3a 100644
--- a/arch/mips/au1000/Kconfig
+++ b/arch/mips/au1000/Kconfig
@@ -138,6 +138,7 @@ config SOC_AU1X00
         bool
         select 64BIT_PHYS_ADDR
         select CEVT_R4K
+        select CSRC_R4K
         select IRQ_CPU
         select SYS_HAS_CPU_MIPS32_R1
         select SYS_SUPPORTS_32BIT_KERNEL
diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile
index b551535b7e48..ffa08362de17 100644
--- a/arch/mips/kernel/Makefile
+++ b/arch/mips/kernel/Makefile
@@ -14,6 +14,7 @@ obj-$(CONFIG_CEVT_GT641XX)	+= cevt-gt641xx.o
 obj-$(CONFIG_CEVT_SB1250)       += cevt-sb1250.o
 obj-$(CONFIG_CEVT_TXX9)         += cevt-txx9.o
 obj-$(CONFIG_CSRC_BCM1480)      += csrc-bcm1480.o
+obj-$(CONFIG_CSRC_R4K)          += csrc-r4k.o
 obj-$(CONFIG_CSRC_SB1250)       += csrc-sb1250.o
 
 binfmt_irix-objs        := irixelf.o irixinv.o irixioctl.o irixsig.o    \
@@ -43,6 +44,7 @@ obj-$(CONFIG_CPU_TX49XX)	+= r4k_fpu.o r4k_switch.o
 obj-$(CONFIG_CPU_VR41XX)        += r4k_fpu.o r4k_switch.o
 
 obj-$(CONFIG_SMP)               += smp.o
+obj-$(CONFIG_SMP_UP)            += smp-up.o
 
 obj-$(CONFIG_MIPS_MT)           += mips-mt.o
 obj-$(CONFIG_MIPS_MT_FPAFF)     += mips-mt-fpaff.o
diff --git a/arch/mips/kernel/cevt-r4k.c b/arch/mips/kernel/cevt-r4k.c
index bab935a3d74b..24a2d907aa0d 100644
--- a/arch/mips/kernel/cevt-r4k.c
+++ b/arch/mips/kernel/cevt-r4k.c
@@ -219,7 +219,7 @@ static int c0_compare_int_usable(void)
         return 1;
 }
 
-void __cpuinit mips_clockevent_init(void)
+int __cpuinit mips_clockevent_init(void)
 {
         uint64_t mips_freq = mips_hpt_frequency;
         unsigned int cpu = smp_processor_id();
@@ -227,7 +227,7 @@ void __cpuinit mips_clockevent_init(void)
         unsigned int irq;
 
         if (!cpu_has_counter || !mips_hpt_frequency)
-                return;
+                return -ENXIO;
 
 #ifdef CONFIG_MIPS_MT_SMTC
         setup_smtc_dummy_clockevent_device();
@@ -237,11 +237,11 @@ void __cpuinit mips_clockevent_init(void)
          * device.
          */
         if (cpu)
-                return;
+                return 0;
 #endif
 
         if (!c0_compare_int_usable())
-                return;
+                return -ENXIO;
 
         /*
          * With vectored interrupts things are getting platform specific.
@@ -276,8 +276,8 @@ void __cpuinit mips_clockevent_init(void)
 
         clockevents_register_device(cd);
 
-        if (!cp0_timer_irq_installed)
-                return;
+        if (cp0_timer_irq_installed)
+                return 0;
 
         cp0_timer_irq_installed = 1;
 
@@ -287,4 +287,6 @@ void __cpuinit mips_clockevent_init(void)
 #else
         setup_irq(irq, &c0_compare_irqaction);
 #endif
+
+        return 0;
 }
diff --git a/arch/mips/kernel/csrc-r4k.c b/arch/mips/kernel/csrc-r4k.c
new file mode 100644
index 000000000000..74c5c62365a8
--- /dev/null
+++ b/arch/mips/kernel/csrc-r4k.c
@@ -0,0 +1,29 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2007 by Ralf Baechle
+ */
+
+static cycle_t c0_hpt_read(void)
+{
+        return read_c0_count();
+}
+
+static struct clocksource clocksource_mips = {
+        .name           = "MIPS",
+        .read           = c0_hpt_read,
+        .mask           = CLOCKSOURCE_MASK(32),
+        .flags          = CLOCK_SOURCE_IS_CONTINUOUS,
+};
+
+static void __init init_mips_clocksource(void)
+{
+        /* Calclate a somewhat reasonable rating value */
+        clocksource_mips.rating = 200 + mips_hpt_frequency / 10000000;
+
+        clocksource_set_clock(&clocksource_mips, mips_hpt_frequency);
+
+        clocksource_register(&clocksource_mips);
+}
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index a06a27d6cfcd..7f6ddcb5d485 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -269,7 +269,7 @@ static void __init bootmem_init(void)
 
 static void __init bootmem_init(void)
 {
-        unsigned long reserved_end;
+        unsigned long init_begin, reserved_end;
         unsigned long mapstart = ~0UL;
         unsigned long bootmap_size;
         int i;
@@ -342,6 +342,35 @@ static void __init bootmem_init(void)
          */
         bootmap_size = init_bootmem_node(NODE_DATA(0), mapstart,
                                          min_low_pfn, max_low_pfn);
+
+
+        init_begin = PFN_UP(__pa_symbol(&__init_begin));
+        for (i = 0; i < boot_mem_map.nr_map; i++) {
+                unsigned long start, end;
+
+                start = PFN_UP(boot_mem_map.map[i].addr);
+                end = PFN_DOWN(boot_mem_map.map[i].addr
+                                + boot_mem_map.map[i].size);
+
+                if (start <= init_begin)
+                        start = init_begin;
+                if (start >= end)
+                        continue;
+
+#ifndef CONFIG_HIGHMEM
+                if (end > max_low_pfn)
+                        end = max_low_pfn;
+
+                /*
+                 * ... finally, is the area going away?
+                 */
+                if (end <= start)
+                        continue;
+#endif
+
+                add_active_range(0, start, end);
+        }
+
         /*
          * Register fully available low RAM pages with the bootmem allocator.
          */
diff --git a/arch/mips/kernel/smp-up.c b/arch/mips/kernel/smp-up.c
new file mode 100644
index 000000000000..ead6c30eeb14
--- /dev/null
+++ b/arch/mips/kernel/smp-up.c
@@ -0,0 +1,67 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2006, 07 by Ralf Baechle (ralf@linux-mips.org)
+ *
+ * Symmetric Uniprocessor (TM) Support
+ */
+#include <linux/kernel.h>
+#include <linux/sched.h>
+
+/*
+ * Send inter-processor interrupt
+ */
+void up_send_ipi_single(int cpu, unsigned int action)
+{
+        panic(KERN_ERR "%s called", __func__);
+}
+
+static inline void up_send_ipi_mask(cpumask_t mask, unsigned int action)
+{
+        panic(KERN_ERR "%s called", __func__);
+}
+
+/*
+ *  After we've done initial boot, this function is called to allow the
+ *  board code to clean up state, if needed
+ */
+void __cpuinit up_init_secondary(void)
+{
+}
+
+void __cpuinit up_smp_finish(void)
+{
+}
+
+/* Hook for after all CPUs are online */
+void up_cpus_done(void)
+{
+}
+
+/*
+ * Firmware CPU startup hook
+ */
+void __cpuinit up_boot_secondary(int cpu, struct task_struct *idle)
+{
+}
+
+void __init up_smp_setup(void)
+{
+}
+
+void __init up_prepare_cpus(unsigned int max_cpus)
+{
+}
+
+struct plat_smp_ops up_smp_ops = {
+        .send_ipi_single        = up_send_ipi_single,
+        .send_ipi_mask          = up_send_ipi_mask,
+        .init_secondary         = up_init_secondary,
+        .smp_finish             = up_smp_finish,
+        .cpus_done              = up_cpus_done,
+        .boot_secondary         = up_boot_secondary,
+        .smp_setup              = up_smp_setup,
+        .prepare_cpus           = up_prepare_cpus,
+};
diff --git a/arch/mips/kernel/time.c b/arch/mips/kernel/time.c
index 3284b9b4ecac..52075426c373 100644
--- a/arch/mips/kernel/time.c
+++ b/arch/mips/kernel/time.c
@@ -50,14 +50,6 @@ int update_persistent_clock(struct timespec now)
         return rtc_mips_set_mmss(now.tv_sec);
 }
 
-/*
- * High precision timer functions for a R4k-compatible timer.
- */
-static cycle_t c0_hpt_read(void)
-{
-        return read_c0_count();
-}
-
 int (*mips_timer_state)(void);
 
 int null_perf_irq(void)
@@ -84,55 +76,6 @@ EXPORT_SYMBOL(perf_irq);
 
 unsigned int mips_hpt_frequency;
 
-static struct clocksource clocksource_mips = {
-        .name           = "MIPS",
-        .read           = c0_hpt_read,
-        .mask           = CLOCKSOURCE_MASK(32),
-        .flags          = CLOCK_SOURCE_IS_CONTINUOUS,
-};
-
-static unsigned int __init calibrate_hpt(void)
-{
-        cycle_t frequency, hpt_start, hpt_end, hpt_count, hz;
-
-        const int loops = HZ / 10;
-        int log_2_loops = 0;
-        int i;
-
-        /*
-         * We want to calibrate for 0.1s, but to avoid a 64-bit
-         * division we round the number of loops up to the nearest
-         * power of 2.
-         */
-        while (loops > 1 << log_2_loops)
-                log_2_loops++;
-        i = 1 << log_2_loops;
-
-        /*
-         * Wait for a rising edge of the timer interrupt.
-         */
-        while (mips_timer_state());
-        while (!mips_timer_state());
-
-        /*
-         * Now see how many high precision timer ticks happen
-         * during the calculated number of periods between timer
-         * interrupts.
-         */
-        hpt_start = clocksource_mips.read();
-        do {
-                while (mips_timer_state());
-                while (!mips_timer_state());
-        } while (--i);
-        hpt_end = clocksource_mips.read();
-
-        hpt_count = (hpt_end - hpt_start) & clocksource_mips.mask;
-        hz = HZ;
-        frequency = hpt_count * hz;
-
-        return frequency >> log_2_loops;
-}
-
 void __init clocksource_set_clock(struct clocksource *cs, unsigned int clock)
 {
         u64 temp;
@@ -166,16 +109,6 @@ void __cpuinit clockevent_set_clock(struct clock_event_device *cd,
         cd->mult = (u32) temp;
 }
 
-static void __init init_mips_clocksource(void)
-{
-        /* Calclate a somewhat reasonable rating value */
-        clocksource_mips.rating = 200 + mips_hpt_frequency / 10000000;
-
-        clocksource_set_clock(&clocksource_mips, mips_hpt_frequency);
-
-        clocksource_register(&clocksource_mips);
-}
-
 void __init __weak plat_time_init(void)
 {
 }
@@ -194,21 +127,42 @@ void __init plat_timer_setup(void)
         BUG();
 }
 
+static __init int cpu_has_mfc0_count_bug(void)
+{
+        switch (current_cpu_type()) {
+        case CPU_R4000PC:
+        case CPU_R4000SC:
+        case CPU_R4000MC:
+                /*
+                 * V3.0 is documented as suffering from the mfc0 from count bug.
+                 * Afaik this is the last version of the R4000.  Later versions
+                 * were marketed as R4400.
+                 */
+                return 1;
+
+        case CPU_R4400PC:
+        case CPU_R4400SC:
+        case CPU_R4400MC:
+                /*
+                 * The published errata for the R4400 upto 3.0 say the CPU
+                 * has the mfc0 from count bug.
+                 */
+                if ((current_cpu_data.processor_id & 0xff) <= 0x30)
+                        return 1;
+
+                /*
+                 * I don't have erratas for newer R4400 so be paranoid.
+                 */
+                return 1;
+        }
+
+        return 0;
+}
+
 void __init time_init(void)
 {
         plat_time_init();
 
-        if (cpu_has_counter && (mips_hpt_frequency || mips_timer_state)) {
-                /* We know counter frequency.  Or we can get it.  */
-                if (!mips_hpt_frequency)
-                        mips_hpt_frequency = calibrate_hpt();
-
-                /* Report the high precision timer rate for a reference.  */
-                printk("Using %u.%03u MHz high precision timer.\n",
-                       ((mips_hpt_frequency + 500) / 1000) / 1000,
-                       ((mips_hpt_frequency + 500) / 1000) % 1000);
+        if (mips_clockevent_init() || !cpu_has_mfc0_count_bug())
                 init_mips_clocksource();
-        }
-
-        mips_clockevent_init();
 }
diff --git a/arch/mips/kernel/vpe.c b/arch/mips/kernel/vpe.c
index 38bd33fa2a23..c06eb812a95e 100644
--- a/arch/mips/kernel/vpe.c
+++ b/arch/mips/kernel/vpe.c
@@ -470,7 +470,7 @@ static int apply_r_mips_lo16(struct module *me, uint32_t *location,
                          */
                         if (v != l->value) {
                                 printk(KERN_DEBUG "VPE loader: "
-                                       "apply_r_mips_lo16/hi16:         "
+                                       "apply_r_mips_lo16/hi16: \t"
                                        "inconsistent value information\n");
                                 return -ENOEXEC;
                         }
@@ -629,7 +629,7 @@ static void simplify_symbols(Elf_Shdr * sechdrs,
                         break;
 
                 case SHN_MIPS_SCOMMON:
-                        printk(KERN_DEBUG "simplify_symbols: ignoring SHN_MIPS_SCOMMON"
+                        printk(KERN_DEBUG "simplify_symbols: ignoring SHN_MIPS_SCOMMON "
                                "symbol <%s> st_shndx %d\n", strtab + sym[i].st_name,
                                sym[i].st_shndx);
                         // .sbss section
diff --git a/arch/mips/math-emu/ieee754.c b/arch/mips/math-emu/ieee754.c
index 946aee331788..cb1b6822711a 100644
--- a/arch/mips/math-emu/ieee754.c
+++ b/arch/mips/math-emu/ieee754.c
@@ -108,6 +108,7 @@ int ieee754si_xcpt(int r, const char *op, ...)
         ax.rv.si = r;
         va_start(ax.ap, op);
         ieee754_xcpt(&ax);
+        va_end(ax.ap);
         return ax.rv.si;
 }
 
@@ -122,5 +123,6 @@ s64 ieee754di_xcpt(s64 r, const char *op, ...)
         ax.rv.di = r;
         va_start(ax.ap, op);
         ieee754_xcpt(&ax);
+        va_end(ax.ap);
         return ax.rv.di;
 }
diff --git a/arch/mips/math-emu/ieee754dp.c b/arch/mips/math-emu/ieee754dp.c
index 3e214aac4b12..6d2d89f32472 100644
--- a/arch/mips/math-emu/ieee754dp.c
+++ b/arch/mips/math-emu/ieee754dp.c
@@ -57,6 +57,7 @@ ieee754dp ieee754dp_xcpt(ieee754dp r, const char *op, ...)
         ax.rv.dp = r;
         va_start(ax.ap, op);
         ieee754_xcpt(&ax);
+        va_end(ax.ap);
         return ax.rv.dp;
 }
 
@@ -83,6 +84,7 @@ ieee754dp ieee754dp_nanxcpt(ieee754dp r, const char *op, ...)
         ax.rv.dp = r;
         va_start(ax.ap, op);
         ieee754_xcpt(&ax);
+        va_end(ax.ap);
         return ax.rv.dp;
 }
 
diff --git a/arch/mips/math-emu/ieee754sp.c b/arch/mips/math-emu/ieee754sp.c
index adda851cd04f..463534045ab6 100644
--- a/arch/mips/math-emu/ieee754sp.c
+++ b/arch/mips/math-emu/ieee754sp.c
@@ -58,6 +58,7 @@ ieee754sp ieee754sp_xcpt(ieee754sp r, const char *op, ...)
         ax.rv.sp = r;
         va_start(ax.ap, op);
         ieee754_xcpt(&ax);
+        va_end(ax.ap);
         return ax.rv.sp;
 }
 
@@ -84,6 +85,7 @@ ieee754sp ieee754sp_nanxcpt(ieee754sp r, const char *op, ...)
         ax.rv.sp = r;
         va_start(ax.ap, op);
         ieee754_xcpt(&ax);
+        va_end(ax.ap);
         return ax.rv.sp;
 }
 
diff --git a/arch/mips/mipssim/sim_time.c b/arch/mips/mipssim/sim_time.c
index bfaafa38846f..e39bbe989da3 100644
--- a/arch/mips/mipssim/sim_time.c
+++ b/arch/mips/mipssim/sim_time.c
@@ -101,9 +101,7 @@ unsigned __init get_c0_compare_int(void)
 
 void __init plat_time_init(void)
 {
-        unsigned int est_freq, flags;
-
-        local_irq_save(flags);
+        unsigned int est_freq;
 
         /* Set Data mode - binary. */
         CMOS_WRITE(CMOS_READ(RTC_CONTROL) | RTC_DM_BINARY, RTC_CONTROL);
@@ -114,6 +112,4 @@ void __init plat_time_init(void)
                (est_freq % 1000000) * 100 / 1000000);
 
         cpu_khz = est_freq / 1000;
-
-        local_irq_restore(flags);
 }
diff --git a/arch/mips/mm/dma-default.c b/arch/mips/mm/dma-default.c
index 33519ce49540..ae76795685cc 100644
--- a/arch/mips/mm/dma-default.c
+++ b/arch/mips/mm/dma-default.c
@@ -40,16 +40,38 @@ static inline int cpu_is_noncoherent_r10000(struct device *dev)
                current_cpu_type() == CPU_R12000);
 }
 
+static gfp_t massage_gfp_flags(const struct device *dev, gfp_t gfp)
+{
+        /* ignore region specifiers */
+        gfp &= ~(__GFP_DMA | __GFP_DMA32 | __GFP_HIGHMEM);
+
+#ifdef CONFIG_ZONE_DMA32
+        if (dev == NULL)
+                gfp |= __GFP_DMA;
+        else if (dev->coherent_dma_mask < DMA_BIT_MASK(24))
+                gfp |= __GFP_DMA;
+        else
+#endif
+#ifdef CONFIG_ZONE_DMA32
+             if (dev->coherent_dma_mask < DMA_BIT_MASK(32))
+                gfp |= __GFP_DMA32;
+        else
+#endif
+                ;
+
+        /* Don't invoke OOM killer */
+        gfp |= __GFP_NORETRY;
+
+        return gfp;
+}
+
 void *dma_alloc_noncoherent(struct device *dev, size_t size,
         dma_addr_t * dma_handle, gfp_t gfp)
 {
         void *ret;
 
-        /* ignore region specifiers */
-        gfp &= ~(__GFP_DMA | __GFP_HIGHMEM);
+        gfp = massage_gfp_flags(dev, gfp);
 
-        if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff))
-                gfp |= GFP_DMA;
         ret = (void *) __get_free_pages(gfp, get_order(size));
 
         if (ret != NULL) {
@@ -67,11 +89,8 @@ void *dma_alloc_coherent(struct device *dev, size_t size,
 {
         void *ret;
 
-        /* ignore region specifiers */
-        gfp &= ~(__GFP_DMA | __GFP_HIGHMEM);
+        gfp = massage_gfp_flags(dev, gfp);
 
-        if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff))
-                gfp |= GFP_DMA;
         ret = (void *) __get_free_pages(gfp, get_order(size));
 
         if (ret) {
@@ -343,7 +362,7 @@ int dma_supported(struct device *dev, u64 mask)
          * so we can't guarantee allocations that must be
          * within a tighter range than GFP_DMA..
          */
-        if (mask < 0x00ffffff)
+        if (mask < DMA_BIT_MASK(24))
                 return 0;
 
         return 1;
diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c
index ec3b9e9f30f4..480dec04f552 100644
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@@ -347,11 +347,8 @@ static int __init page_is_ram(unsigned long pagenr)
 
 void __init paging_init(void)
 {
-        unsigned long zones_size[MAX_NR_ZONES] = { 0, };
-#ifndef CONFIG_FLATMEM
-        unsigned long zholes_size[MAX_NR_ZONES] = { 0, };
-        unsigned long i, j, pfn;
-#endif
+        unsigned long max_zone_pfns[MAX_NR_ZONES];
+        unsigned long lastpfn;
 
         pagetable_init();
 
@@ -361,35 +358,27 @@ void __init paging_init(void)
         kmap_coherent_init();
 
 #ifdef CONFIG_ZONE_DMA
-        if (min_low_pfn < MAX_DMA_PFN && MAX_DMA_PFN <= max_low_pfn) {
-                zones_size[ZONE_DMA] = MAX_DMA_PFN - min_low_pfn;
-                zones_size[ZONE_NORMAL] = max_low_pfn - MAX_DMA_PFN;
-        } else if (max_low_pfn < MAX_DMA_PFN)
-                zones_size[ZONE_DMA] = max_low_pfn - min_low_pfn;
-        else
+        max_zone_pfns[ZONE_DMA] = MAX_DMA_PFN;
 #endif
-        zones_size[ZONE_NORMAL] = max_low_pfn - min_low_pfn;
-
+#ifdef CONFIG_ZONE_DMA32
+        max_zone_pfns[ZONE_DMA32] = MAX_DMA32_PFN;
+#endif
+        max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
+        lastpfn = max_low_pfn;
 #ifdef CONFIG_HIGHMEM
-        zones_size[ZONE_HIGHMEM] = highend_pfn - highstart_pfn;
+        max_zone_pfns[ZONE_HIGHMEM] = highend_pfn;
+        lastpfn = highend_pfn;
 
-        if (cpu_has_dc_aliases && zones_size[ZONE_HIGHMEM]) {
+        if (cpu_has_dc_aliases && max_low_pfn != highend_pfn) {
                 printk(KERN_WARNING "This processor doesn't support highmem."
-                       " %ldk highmem ignored\n", zones_size[ZONE_HIGHMEM]);
-                zones_size[ZONE_HIGHMEM] = 0;
+                       " %ldk highmem ignored\n",
+                       (highend_pfn - max_low_pfn) << (PAGE_SHIFT - 10));
+                max_zone_pfns[ZONE_HIGHMEM] = max_low_pfn;
+                lastpfn = max_low_pfn;
         }
 #endif
 
-#ifdef CONFIG_FLATMEM
-        free_area_init(zones_size);
-#else
-        pfn = min_low_pfn;
-        for (i = 0; i < MAX_NR_ZONES; i++)
-                for (j = 0; j < zones_size[i]; j++, pfn++)
-                        if (!page_is_ram(pfn))
-                                zholes_size[i]++;
-        free_area_init_node(0, NODE_DATA(0), zones_size, 0, zholes_size);
-#endif
+        free_area_init_nodes(max_zone_pfns);
 }
 
 static struct kcore_list kcore_mem, kcore_vmalloc;
diff --git a/arch/mips/pmc-sierra/Kconfig b/arch/mips/pmc-sierra/Kconfig
index 6b293ce0935f..90261b83db04 100644
--- a/arch/mips/pmc-sierra/Kconfig
+++ b/arch/mips/pmc-sierra/Kconfig
@@ -5,12 +5,14 @@ choice
 config PMC_MSP4200_EVAL
         bool "PMC-Sierra MSP4200 Eval Board"
         select CEVT_R4K
+        select CSRC_R4K
         select IRQ_MSP_SLP
         select HW_HAS_PCI
 
 config PMC_MSP4200_GW
         bool "PMC-Sierra MSP4200 VoIP Gateway"
         select CEVT_R4K
+        select CSRC_R4K
         select IRQ_MSP_SLP
         select HW_HAS_PCI
 
diff --git a/arch/mips/sgi-ip22/ip22-eisa.c b/arch/mips/sgi-ip22/ip22-eisa.c
index 26854fb11e7c..1617241d2737 100644
--- a/arch/mips/sgi-ip22/ip22-eisa.c
+++ b/arch/mips/sgi-ip22/ip22-eisa.c
@@ -36,6 +36,7 @@
 #include <asm/sgi/ioc.h>
 #include <asm/sgi/mc.h>
 #include <asm/sgi/ip22.h>
+#include <asm/i8259.h>
 
 /* I2 has four EISA slots. */
 #define IP22_EISA_MAX_SLOTS       4
@@ -93,126 +94,11 @@ static irqreturn_t ip22_eisa_intr(int irq, void *dev_id)
         return IRQ_NONE;
 }
 
-static void enable_eisa1_irq(unsigned int irq)
-{
-        u8 mask;
-
-        mask = inb(EISA_INT1_MASK);
-        mask &= ~((u8) (1 << irq));
-        outb(mask, EISA_INT1_MASK);
-}
-
-static unsigned int startup_eisa1_irq(unsigned int irq)
-{
-        u8 edge;
-
-        /* Only use edge interrupts for EISA */
-
-        edge = inb(EISA_INT1_EDGE_LEVEL);
-        edge &= ~((u8) (1 << irq));
-        outb(edge, EISA_INT1_EDGE_LEVEL);
-
-        enable_eisa1_irq(irq);
-        return 0;
-}
-
-static void disable_eisa1_irq(unsigned int irq)
-{
-        u8 mask;
-
-        mask = inb(EISA_INT1_MASK);
-        mask |= ((u8) (1 << irq));
-        outb(mask, EISA_INT1_MASK);
-}
-
-static void mask_and_ack_eisa1_irq(unsigned int irq)
-{
-        disable_eisa1_irq(irq);
-
-        outb(0x20, EISA_INT1_CTRL);
-}
-
-static void end_eisa1_irq(unsigned int irq)
-{
-        if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
-                enable_eisa1_irq(irq);
-}
-
-static struct irq_chip ip22_eisa1_irq_type = {
-        .name           = "IP22 EISA",
-        .startup        = startup_eisa1_irq,
-        .ack            = mask_and_ack_eisa1_irq,
-        .mask           = disable_eisa1_irq,
-        .mask_ack       = mask_and_ack_eisa1_irq,
-        .unmask         = enable_eisa1_irq,
-        .end            = end_eisa1_irq,
-};
-
-static void enable_eisa2_irq(unsigned int irq)
-{
-        u8 mask;
-
-        mask = inb(EISA_INT2_MASK);
-        mask &= ~((u8) (1 << (irq - 8)));
-        outb(mask, EISA_INT2_MASK);
-}
-
-static unsigned int startup_eisa2_irq(unsigned int irq)
-{
-        u8 edge;
-
-        /* Only use edge interrupts for EISA */
-
-        edge = inb(EISA_INT2_EDGE_LEVEL);
-        edge &= ~((u8) (1 << (irq - 8)));
-        outb(edge, EISA_INT2_EDGE_LEVEL);
-
-        enable_eisa2_irq(irq);
-        return 0;
-}
-
-static void disable_eisa2_irq(unsigned int irq)
-{
-        u8 mask;
-
-        mask = inb(EISA_INT2_MASK);
-        mask |= ((u8) (1 << (irq - 8)));
-        outb(mask, EISA_INT2_MASK);
-}
-
-static void mask_and_ack_eisa2_irq(unsigned int irq)
-{
-        disable_eisa2_irq(irq);
-
-        outb(0x20, EISA_INT2_CTRL);
-}
-
-static void end_eisa2_irq(unsigned int irq)
-{
-        if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
-                enable_eisa2_irq(irq);
-}
-
-static struct irq_chip ip22_eisa2_irq_type = {
-        .name           = "IP22 EISA",
-        .startup        = startup_eisa2_irq,
-        .ack            = mask_and_ack_eisa2_irq,
-        .mask           = disable_eisa2_irq,
-        .mask_ack       = mask_and_ack_eisa2_irq,
-        .unmask         = enable_eisa2_irq,
-        .end            = end_eisa2_irq,
-};
-
 static struct irqaction eisa_action = {
         .handler        = ip22_eisa_intr,
         .name           = "EISA",
 };
 
-static struct irqaction cascade_action = {
-        .handler        = no_action,
-        .name           = "EISA cascade",
-};
-
 int __init ip22_eisa_init(void)
 {
         int i, c;
@@ -248,29 +134,13 @@ int __init ip22_eisa_init(void)
         outb(1, EISA_EXT_NMI_RESET_CTRL);
         udelay(50);     /* Wait long enough for the dust to settle */
         outb(0, EISA_EXT_NMI_RESET_CTRL);
-        outb(0x11, EISA_INT1_CTRL);
-        outb(0x11, EISA_INT2_CTRL);
-        outb(0, EISA_INT1_MASK);
-        outb(8, EISA_INT2_MASK);
-        outb(4, EISA_INT1_MASK);
-        outb(2, EISA_INT2_MASK);
-        outb(1, EISA_INT1_MASK);
-        outb(1, EISA_INT2_MASK);
-        outb(0xfb, EISA_INT1_MASK);
-        outb(0xff, EISA_INT2_MASK);
         outb(0, EISA_DMA2_WRITE_SINGLE);
 
-        for (i = SGINT_EISA; i < (SGINT_EISA + EISA_MAX_IRQ); i++) {
-                if (i < (SGINT_EISA + 8))
-                        set_irq_chip(i, &ip22_eisa1_irq_type);
-                else
-                        set_irq_chip(i, &ip22_eisa2_irq_type);
-        }
+        init_i8259_irqs();
 
         /* Cannot use request_irq because of kmalloc not being ready at such
          * an early stage. Yes, I've been bitten... */
         setup_irq(SGI_EISA_IRQ, &eisa_action);
-        setup_irq(SGINT_EISA + 2, &cascade_action);
 
         EISA_bus = 1;
         return 0;
diff --git a/arch/mips/sgi-ip22/ip22-nvram.c b/arch/mips/sgi-ip22/ip22-nvram.c
index e19d60d5fcc1..0177566475d4 100644
--- a/arch/mips/sgi-ip22/ip22-nvram.c
+++ b/arch/mips/sgi-ip22/ip22-nvram.c
@@ -32,19 +32,19 @@
         for (x=0; x<100000; x++) __asm__ __volatile__(""); })
 
 #define eeprom_cs_on(ptr) ({    \
-        *ptr &= ~EEPROM_DATO;   \
-        *ptr &= ~EEPROM_ECLK;   \
-        *ptr &= ~EEPROM_EPROT;  \
-        delay();                \
-        *ptr |= EEPROM_CSEL;    \
-        *ptr |= EEPROM_ECLK; })
+        __raw_writel(__raw_readl(ptr) & ~EEPROM_DATO, ptr);     \
+        __raw_writel(__raw_readl(ptr) & ~EEPROM_ECLK, ptr);     \
+        __raw_writel(__raw_readl(ptr) & ~EEPROM_EPROT, ptr);    \
+        delay();                                                \
+        __raw_writel(__raw_readl(ptr) | EEPROM_CSEL, ptr);      \
+        __raw_writel(__raw_readl(ptr) | EEPROM_ECLK, ptr); })
 
 
 #define eeprom_cs_off(ptr) ({   \
-        *ptr &= ~EEPROM_ECLK;   \
-        *ptr &= ~EEPROM_CSEL;   \
-        *ptr |= EEPROM_EPROT;   \
-        *ptr |= EEPROM_ECLK; })
+        __raw_writel(__raw_readl(ptr) & ~EEPROM_ECLK, ptr);     \
+        __raw_writel(__raw_readl(ptr) & ~EEPROM_CSEL, ptr);     \
+        __raw_writel(__raw_readl(ptr) | EEPROM_EPROT, ptr);     \
+        __raw_writel(__raw_readl(ptr) | EEPROM_ECLK, ptr); })
 
 #define BITS_IN_COMMAND 11
 /*
@@ -60,15 +60,17 @@ static inline void eeprom_cmd(unsigned int *ctrl, unsigned cmd, unsigned reg)
         ser_cmd = cmd | (reg << (16 - BITS_IN_COMMAND));
         for (i = 0; i < BITS_IN_COMMAND; i++) {
                 if (ser_cmd & (1<<15))  /* if high order bit set */
-                        writel(readl(ctrl) | EEPROM_DATO, ctrl);
+                        __raw_writel(__raw_readl(ctrl) | EEPROM_DATO, ctrl);
                 else
-                        writel(readl(ctrl) & ~EEPROM_DATO, ctrl);
-                writel(readl(ctrl) & ~EEPROM_ECLK, ctrl);
-                writel(readl(ctrl) | EEPROM_ECLK, ctrl);
+                        __raw_writel(__raw_readl(ctrl) & ~EEPROM_DATO, ctrl);
+                __raw_writel(__raw_readl(ctrl) & ~EEPROM_ECLK, ctrl);
+                delay();
+                __raw_writel(__raw_readl(ctrl) | EEPROM_ECLK, ctrl);
+                delay();
                 ser_cmd <<= 1;
         }
         /* see data sheet timing diagram */
-        writel(readl(ctrl) & ~EEPROM_DATO, ctrl);
+        __raw_writel(__raw_readl(ctrl) & ~EEPROM_DATO, ctrl);
 }
 
 unsigned short ip22_eeprom_read(unsigned int *ctrl, int reg)
@@ -76,18 +78,18 @@ unsigned short ip22_eeprom_read(unsigned int *ctrl, int reg)
         unsigned short res = 0;
         int i;
 
-        writel(readl(ctrl) & ~EEPROM_EPROT, ctrl);
+        __raw_writel(__raw_readl(ctrl) & ~EEPROM_EPROT, ctrl);
         eeprom_cs_on(ctrl);
         eeprom_cmd(ctrl, EEPROM_READ, reg);
 
         /* clock the data ouf of serial mem */
         for (i = 0; i < 16; i++) {
-                writel(readl(ctrl) & ~EEPROM_ECLK, ctrl);
+                __raw_writel(__raw_readl(ctrl) & ~EEPROM_ECLK, ctrl);
                 delay();
-                writel(readl(ctrl) | EEPROM_ECLK, ctrl);
+                __raw_writel(__raw_readl(ctrl) | EEPROM_ECLK, ctrl);
                 delay();
                 res <<= 1;
-                if (readl(ctrl) & EEPROM_DATI)
+                if (__raw_readl(ctrl) & EEPROM_DATI)
                         res |= 1;
         }
 
diff --git a/arch/mips/sgi-ip32/ip32-irq.c b/arch/mips/sgi-ip32/ip32-irq.c
index aab17ddd2f30..cab7cc22ab67 100644
--- a/arch/mips/sgi-ip32/ip32-irq.c
+++ b/arch/mips/sgi-ip32/ip32-irq.c
@@ -209,18 +209,18 @@ static unsigned long macepci_mask;
 
 static void enable_macepci_irq(unsigned int irq)
 {
-        macepci_mask |= MACEPCI_CONTROL_INT(irq - 9);
+        macepci_mask |= MACEPCI_CONTROL_INT(irq - MACEPCI_SCSI0_IRQ);
         mace->pci.control = macepci_mask;
-        crime_mask |= 1 << (irq - 1);
+        crime_mask |= 1 << (irq - CRIME_IRQ_BASE);
         crime->imask = crime_mask;
 }
 
 static void disable_macepci_irq(unsigned int irq)
 {
-        crime_mask &= ~(1 << (irq - 1));
+        crime_mask &= ~(1 << (irq - CRIME_IRQ_BASE));
         crime->imask = crime_mask;
         flush_crime_bus();
-        macepci_mask &= ~MACEPCI_CONTROL_INT(irq - 9);
+        macepci_mask &= ~MACEPCI_CONTROL_INT(irq - MACEPCI_SCSI0_IRQ);
         mace->pci.control = macepci_mask;
         flush_mace_bus();
 }
@@ -299,7 +299,7 @@ static void enable_maceisa_irq(unsigned int irq)
         pr_debug("crime_int %08x enabled\n", crime_int);
         crime_mask |= crime_int;
         crime->imask = crime_mask;
-        maceisa_mask |= 1 << (irq - 33);
+        maceisa_mask |= 1 << (irq - MACEISA_AUDIO_SW_IRQ);
         mace->perif.ctrl.imask = maceisa_mask;
 }
 
@@ -307,7 +307,7 @@ static void disable_maceisa_irq(unsigned int irq)
 {
         unsigned int crime_int = 0;
 
-        maceisa_mask &= ~(1 << (irq - 33));
+        maceisa_mask &= ~(1 << (irq - MACEISA_AUDIO_SW_IRQ));
         if (!(maceisa_mask & MACEISA_AUDIO_INT))
                 crime_int |= MACE_AUDIO_INT;
         if (!(maceisa_mask & MACEISA_MISC_INT))
@@ -331,7 +331,7 @@ static void mask_and_ack_maceisa_irq(unsigned int irq)
         case MACEISA_SERIAL2_TDMAPR_IRQ:
                 /* edge triggered */
                 mace_int = mace->perif.ctrl.istat;
-                mace_int &= ~(1 << (irq - 33));
+                mace_int &= ~(1 << (irq - MACEISA_AUDIO_SW_IRQ));
                 mace->perif.ctrl.istat = mace_int;
                 break;
         }
@@ -359,13 +359,17 @@ static struct irq_chip ip32_maceisa_interrupt = {
 
 static void enable_mace_irq(unsigned int irq)
 {
-        crime_mask |= 1 << (irq - 1);
+        unsigned int bit = irq - CRIME_IRQ_BASE;
+
+        crime_mask |= (1 << bit);
         crime->imask = crime_mask;
 }
 
 static void disable_mace_irq(unsigned int irq)
 {
-        crime_mask &= ~(1 << (irq - 1));
+        unsigned int bit = irq - CRIME_IRQ_BASE;
+
+        crime_mask &= ~(1 << bit);
         crime->imask = crime_mask;
         flush_crime_bus();
 }
@@ -489,7 +493,7 @@ void __init arch_init_irq(void)
         mace->perif.ctrl.imask = 0;
 
         mips_cpu_irq_init();
-        for (irq = MIPS_CPU_IRQ_BASE + 8; irq <= IP32_IRQ_MAX; irq++) {
+        for (irq = CRIME_IRQ_BASE; irq <= IP32_IRQ_MAX; irq++) {
                 switch (irq) {
                 case MACE_VID_IN1_IRQ ... MACE_PCI_BRIDGE_IRQ:
                         set_irq_chip(irq, &ip32_mace_interrupt);
diff --git a/arch/mips/vr41xx/Kconfig b/arch/mips/vr41xx/Kconfig
index eeb089f20c0d..559acc09c819 100644
--- a/arch/mips/vr41xx/Kconfig
+++ b/arch/mips/vr41xx/Kconfig
@@ -6,6 +6,7 @@ choice
 config CASIO_E55
         bool "CASIO CASSIOPEIA E-10/15/55/65"
         select CEVT_R4K
+        select CSRC_R4K
         select DMA_NONCOHERENT
         select IRQ_CPU
         select ISA
@@ -15,6 +16,7 @@ config CASIO_E55
 config IBM_WORKPAD
         bool "IBM WorkPad z50"
         select CEVT_R4K
+        select CSRC_R4K
         select DMA_NONCOHERENT
         select IRQ_CPU
         select ISA
@@ -24,6 +26,7 @@ config IBM_WORKPAD
 config NEC_CMBVR4133
         bool "NEC CMB-VR4133"
         select CEVT_R4K
+        select CSRC_R4K
         select DMA_NONCOHERENT
         select IRQ_CPU
         select HW_HAS_PCI
@@ -33,6 +36,7 @@ config NEC_CMBVR4133
 config TANBAC_TB022X
         bool "TANBAC VR4131 multichip module and TANBAC VR4131DIMM"
         select CEVT_R4K
+        select CSRC_R4K
         select DMA_NONCOHERENT
         select IRQ_CPU
         select HW_HAS_PCI
@@ -48,6 +52,7 @@ config TANBAC_TB022X
 config VICTOR_MPC30X
         bool "Victor MP-C303/304"
         select CEVT_R4K
+        select CSRC_R4K
         select DMA_NONCOHERENT
         select IRQ_CPU
         select HW_HAS_PCI
@@ -58,6 +63,7 @@ config VICTOR_MPC30X
 config ZAO_CAPCELLA
         bool "ZAO Networks Capcella"
         select CEVT_R4K
+        select CSRC_R4K
         select DMA_NONCOHERENT
         select IRQ_CPU
         select HW_HAS_PCI