13 files changed, 94 insertions, 166 deletions

diff --git a/arch/mips/au1000/common/clocks.c b/arch/mips/au1000/common/clocks.c
index 46f8ee0e2657..043429d17c5f 100644
--- a/arch/mips/au1000/common/clocks.c
+++ b/arch/mips/au1000/common/clocks.c
@@ -45,6 +45,7 @@ unsigned int get_au1x00_speed(void)
 {
         return au1x00_clock;
 }
+EXPORT_SYMBOL(get_au1x00_speed);
 
 /*
  * The UART baud base is not known at compile time ... if
diff --git a/arch/mips/au1000/common/dbdma.c b/arch/mips/au1000/common/dbdma.c
index 42d555236de1..601ee9180ee4 100644
--- a/arch/mips/au1000/common/dbdma.c
+++ b/arch/mips/au1000/common/dbdma.c
@@ -216,6 +216,17 @@ u32 au1xxx_ddma_add_device(dbdev_tab_t *dev)
 }
 EXPORT_SYMBOL(au1xxx_ddma_add_device);
 
+void au1xxx_ddma_del_device(u32 devid)
+{
+        dbdev_tab_t *p = find_dbdev_id(devid);
+
+        if (p != NULL) {
+                memset(p, 0, sizeof(dbdev_tab_t));
+                p->dev_id = ~0;
+        }
+}
+EXPORT_SYMBOL(au1xxx_ddma_del_device);
+
 /* Allocate a channel and return a non-zero descriptor if successful. */
 u32 au1xxx_dbdma_chan_alloc(u32 srcid, u32 destid,
        void (*callback)(int, void *), void *callparam)
diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile
index cc0244036aec..65e46a6d4178 100644
--- a/arch/mips/kernel/Makefile
+++ b/arch/mips/kernel/Makefile
@@ -30,7 +30,6 @@ obj-$(CONFIG_CPU_LOONGSON2)	+= r4k_fpu.o r4k_switch.o
 obj-$(CONFIG_CPU_MIPS32)        += r4k_fpu.o r4k_switch.o
 obj-$(CONFIG_CPU_MIPS64)        += r4k_fpu.o r4k_switch.o
 obj-$(CONFIG_CPU_R3000)         += r2300_fpu.o r2300_switch.o
-obj-$(CONFIG_CPU_R4000)         += r4k_fpu.o r4k_switch.o
 obj-$(CONFIG_CPU_R4300)         += r4k_fpu.o r4k_switch.o
 obj-$(CONFIG_CPU_R4X00)         += r4k_fpu.o r4k_switch.o
 obj-$(CONFIG_CPU_R5000)         += r4k_fpu.o r4k_switch.o
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index cb8b0e2c7954..f9165d1a17bf 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -88,15 +88,17 @@ static void show_raw_backtrace(unsigned long reg29)
 #ifdef CONFIG_KALLSYMS
         printk("\n");
 #endif
-#define IS_KVA01(a) ((((unsigned int)a) & 0xc0000000) == 0x80000000)
-        if (IS_KVA01(sp)) {
-                while (!kstack_end(sp)) {
-                        addr = *sp++;
-                        if (__kernel_text_address(addr))
-                                print_ip_sym(addr);
+        while (!kstack_end(sp)) {
+                unsigned long __user *p =
+                        (unsigned long __user *)(unsigned long)sp++;
+                if (__get_user(addr, p)) {
+                        printk(" (Bad stack address)");
+                        break;
                 }
-                printk("\n");
+                if (__kernel_text_address(addr))
+                        print_ip_sym(addr);
         }
+        printk("\n");
 }
 
 #ifdef CONFIG_KALLSYMS
diff --git a/arch/mips/mips-boards/generic/time.c b/arch/mips/mips-boards/generic/time.c
index 008fd82b5840..fe2cac1b4514 100644
--- a/arch/mips/mips-boards/generic/time.c
+++ b/arch/mips/mips-boards/generic/time.c
@@ -58,27 +58,8 @@ static int mips_cpu_timer_irq;
 static int mips_cpu_perf_irq;
 extern int cp0_perfcount_irq;
 
-DEFINE_PER_CPU(unsigned int, tickcount);
-#define tickcount_this_cpu __get_cpu_var(tickcount)
-static unsigned long ledbitmask;
-
 static void mips_timer_dispatch(void)
 {
-#if defined(CONFIG_MIPS_MALTA) || defined(CONFIG_MIPS_ATLAS)
-        /*
-         * Yes, this is very tacky, won't work as expected with SMTC and
-         * dyntick will break it,
-         * but it gives me a nice warm feeling during debug
-         */
-#define LEDBAR 0xbf000408
-        if (tickcount_this_cpu++ >= HZ) {
-                tickcount_this_cpu = 0;
-                change_bit(smp_processor_id(), &ledbitmask);
-                smp_wmb(); /* Make sure every one else sees the change */
-                /* This will pick up any recent changes made by other CPU's */
-                *(unsigned int *)LEDBAR = ledbitmask;
-        }
-#endif
         do_IRQ(mips_cpu_timer_irq);
 }
 
diff --git a/arch/mips/mm/page.c b/arch/mips/mm/page.c
index d827d6144369..cab81f42eee5 100644
--- a/arch/mips/mm/page.c
+++ b/arch/mips/mm/page.c
@@ -310,8 +310,8 @@ void __cpuinit build_clear_page(void)
         if (R4600_V2_HIT_CACHEOP_WAR && cpu_is_r4600_v2_x())
                 uasm_i_lui(&buf, AT, 0xa000);
 
-        off = min(8, pref_bias_clear_store / cache_line_size) *
-              cache_line_size;
+        off = cache_line_size ? min(8, pref_bias_clear_store / cache_line_size)
+                                * cache_line_size : 0;
         while (off) {
                 build_clear_pref(&buf, -off);
                 off -= cache_line_size;
@@ -454,12 +454,14 @@ void __cpuinit build_copy_page(void)
         if (R4600_V2_HIT_CACHEOP_WAR && cpu_is_r4600_v2_x())
                 uasm_i_lui(&buf, AT, 0xa000);
 
-        off = min(8, pref_bias_copy_load / cache_line_size) * cache_line_size;
+        off = cache_line_size ? min(8, pref_bias_copy_load / cache_line_size) *
+                                cache_line_size : 0;
         while (off) {
                 build_copy_load_pref(&buf, -off);
                 off -= cache_line_size;
         }
-        off = min(8, pref_bias_copy_store / cache_line_size) * cache_line_size;
+        off = cache_line_size ? min(8, pref_bias_copy_load / cache_line_size) *
+                                cache_line_size : 0;
         while (off) {
                 build_copy_store_pref(&buf, -off);
                 off -= cache_line_size;
diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c
index 382738ca8a0b..76da73a5ab3c 100644
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -224,8 +224,9 @@ static u32 final_handler[64] __cpuinitdata;
 static void __cpuinit __maybe_unused build_tlb_probe_entry(u32 **p)
 {
         switch (current_cpu_type()) {
-        /* Found by experiment: R4600 v2.0 needs this, too.  */
+        /* Found by experiment: R4600 v2.0/R4700 needs this, too.  */
         case CPU_R4600:
+        case CPU_R4700:
         case CPU_R5000:
         case CPU_R5000A:
         case CPU_NEVADA:
diff --git a/arch/mips/pci/ops-bridge.c b/arch/mips/pci/ops-bridge.c
index 1fa09929cd7a..b46b3e211775 100644
--- a/arch/mips/pci/ops-bridge.c
+++ b/arch/mips/pci/ops-bridge.c
@@ -14,6 +14,22 @@
 #include <asm/sn/sn0/hub.h>
 
 /*
+ * Most of the IOC3 PCI config register aren't present
+ * we emulate what is needed for a normal PCI enumeration
+ */
+static u32 emulate_ioc3_cfg(int where, int size)
+{
+        if (size == 1 && where == 0x3d)
+                return 0x01;
+        else if (size == 2 && where == 0x3c)
+                return 0x0100;
+        else if (size == 4 && where == 0x3c)
+                return 0x00000100;
+
+        return 0;
+}
+
+/*
  * The Bridge ASIC supports both type 0 and type 1 access.  Type 1 is
  * not really documented, so right now I can't write code which uses it.
  * Therefore we use type 0 accesses for now even though they won't work
@@ -64,7 +80,7 @@ oh_my_gawd:
          * generic PCI code a chance to look at the wrong register.
          */
         if ((where >= 0x14 && where < 0x40) || (where >= 0x48)) {
-                *value = 0;
+                *value = emulate_ioc3_cfg(where, size);
                 return PCIBIOS_SUCCESSFUL;
         }
 
@@ -127,7 +143,7 @@ oh_my_gawd:
          * generic PCI code a chance to look at the wrong register.
          */
         if ((where >= 0x14 && where < 0x40) || (where >= 0x48)) {
-                *value = 0;
+                *value = emulate_ioc3_cfg(where, size);
                 return PCIBIOS_SUCCESSFUL;
         }
 
diff --git a/arch/mips/pci/pci-ip27.c b/arch/mips/pci/pci-ip27.c
index bb64828a92fe..a18516925cdd 100644
--- a/arch/mips/pci/pci-ip27.c
+++ b/arch/mips/pci/pci-ip27.c
@@ -47,6 +47,9 @@ int __cpuinit bridge_probe(nasid_t nasid, int widget_id, int masterwid)
         static int num_bridges = 0;
         bridge_t *bridge;
         int slot;
+        extern int pci_probe_only;
+
+        pci_probe_only = 1;
 
         printk("a bridge\n");
 
@@ -100,6 +103,11 @@ int __cpuinit bridge_probe(nasid_t nasid, int widget_id, int masterwid)
          */
         bridge->b_wid_control |= BRIDGE_CTRL_IO_SWAP |
                                  BRIDGE_CTRL_MEM_SWAP;
+#ifdef CONFIG_PAGE_SIZE_4KB
+        bridge->b_wid_control &= ~BRIDGE_CTRL_PAGE_SIZE;
+#else /* 16kB or larger */
+        bridge->b_wid_control |= BRIDGE_CTRL_PAGE_SIZE;
+#endif
 
         /*
          * Hmm...  IRIX sets additional bits in the address which
diff --git a/arch/mips/sgi-ip27/ip27-init.c b/arch/mips/sgi-ip27/ip27-init.c
index 7093e7c573a4..4a500e8cd3cc 100644
--- a/arch/mips/sgi-ip27/ip27-init.c
+++ b/arch/mips/sgi-ip27/ip27-init.c
@@ -161,27 +161,6 @@ cnodeid_t get_compact_nodeid(void)
         return NASID_TO_COMPACT_NODEID(get_nasid());
 }
 
-/* Extracted from the IOC3 meta driver.  FIXME.  */
-static inline void ioc3_sio_init(void)
-{
-        struct ioc3 *ioc3;
-        nasid_t nid;
-        long loops;
-
-        nid = get_nasid();
-        ioc3 = (struct ioc3 *) KL_CONFIG_CH_CONS_INFO(nid)->memory_base;
-
-        ioc3->sscr_a = 0;                       /* PIO mode for uarta.  */
-        ioc3->sscr_b = 0;                       /* PIO mode for uartb.  */
-        ioc3->sio_iec = ~0;
-        ioc3->sio_ies = (SIO_IR_SA_INT | SIO_IR_SB_INT);
-
-        loops=1000000; while(loops--);
-        ioc3->sregs.uarta.iu_fcr = 0;
-        ioc3->sregs.uartb.iu_fcr = 0;
-        loops=1000000; while(loops--);
-}
-
 static inline void ioc3_eth_init(void)
 {
         struct ioc3 *ioc3;
@@ -234,7 +213,6 @@ void __init plat_mem_setup(void)
                 panic("Kernel compiled for N mode.");
 #endif
 
-        ioc3_sio_init();
         ioc3_eth_init();
         per_cpu_init();
 
diff --git a/arch/mips/sgi-ip27/ip27-memory.c b/arch/mips/sgi-ip27/ip27-memory.c
index bf438d02366e..42cd10956306 100644
--- a/arch/mips/sgi-ip27/ip27-memory.c
+++ b/arch/mips/sgi-ip27/ip27-memory.c
@@ -33,10 +33,6 @@
 #define SLOT_PFNSHIFT           (SLOT_SHIFT - PAGE_SHIFT)
 #define PFN_NASIDSHFT           (NASID_SHFT - PAGE_SHIFT)
 
-#define SLOT_IGNORED            0xffff
-
-static short __initdata slot_lastfilled_cache[MAX_COMPACT_NODES];
-static unsigned short __initdata slot_psize_cache[MAX_COMPACT_NODES][MAX_MEM_SLOTS];
 static struct bootmem_data __initdata plat_node_bdata[MAX_COMPACT_NODES];
 
 struct node_data *__node_data[MAX_COMPACT_NODES];
@@ -267,51 +263,6 @@ static pfn_t __init slot_getbasepfn(cnodeid_t cnode, int slot)
         return ((pfn_t)nasid << PFN_NASIDSHFT) | (slot << SLOT_PFNSHIFT);
 }
 
-/*
- * Return the number of pages of memory provided by the given slot
- * on the specified node.
- */
-static pfn_t __init slot_getsize(cnodeid_t node, int slot)
-{
-        return (pfn_t) slot_psize_cache[node][slot];
-}
-
-/*
- * Return highest slot filled
- */
-static int __init node_getlastslot(cnodeid_t node)
-{
-        return (int) slot_lastfilled_cache[node];
-}
-
-/*
- * Return the pfn of the last free page of memory on a node.
- */
-static pfn_t __init node_getmaxclick(cnodeid_t node)
-{
-        pfn_t   slot_psize;
-        int     slot;
-
-        /*
-         * Start at the top slot. When we find a slot with memory in it,
-         * that's the winner.
-         */
-        for (slot = (MAX_MEM_SLOTS - 1); slot >= 0; slot--) {
-                if ((slot_psize = slot_getsize(node, slot))) {
-                        if (slot_psize == SLOT_IGNORED)
-                                continue;
-                        /* Return the basepfn + the slot size, minus 1. */
-                        return slot_getbasepfn(node, slot) + slot_psize - 1;
-                }
-        }
-
-        /*
-         * If there's no memory on the node, return 0. This is likely
-         * to cause problems.
-         */
-        return 0;
-}
-
 static pfn_t __init slot_psize_compute(cnodeid_t node, int slot)
 {
         nasid_t nasid;
@@ -404,13 +355,13 @@ static void __init mlreset(void)
 static void __init szmem(void)
 {
         pfn_t slot_psize, slot0sz = 0, nodebytes;       /* Hack to detect problem configs */
-        int slot, ignore;
+        int slot;
         cnodeid_t node;
 
         num_physpages = 0;
 
         for_each_online_node(node) {
-                ignore = nodebytes = 0;
+                nodebytes = 0;
                 for (slot = 0; slot < MAX_MEM_SLOTS; slot++) {
                         slot_psize = slot_psize_compute(node, slot);
                         if (slot == 0)
@@ -420,21 +371,20 @@ static void __init szmem(void)
                          * kernel text.
                          */
                         nodebytes += (1LL << SLOT_SHIFT);
+
+                        if (!slot_psize)
+                                continue;
+
                         if ((nodebytes >> PAGE_SHIFT) * (sizeof(struct page)) >
-                                                (slot0sz << PAGE_SHIFT))
-                                ignore = 1;
-                        if (ignore && slot_psize) {
+                                                (slot0sz << PAGE_SHIFT)) {
                                 printk("Ignoring slot %d onwards on node %d\n",
                                                                 slot, node);
-                                slot_psize_cache[node][slot] = SLOT_IGNORED;
                                 slot = MAX_MEM_SLOTS;
                                 continue;
                         }
                         num_physpages += slot_psize;
-                        slot_psize_cache[node][slot] =
-                                        (unsigned short) slot_psize;
-                        if (slot_psize)
-                                slot_lastfilled_cache[node] = slot;
+                        add_active_range(node, slot_getbasepfn(node, slot),
+                                         slot_getbasepfn(node, slot) + slot_psize);
                 }
         }
 }
@@ -442,18 +392,20 @@ static void __init szmem(void)
 static void __init node_mem_init(cnodeid_t node)
 {
         pfn_t slot_firstpfn = slot_getbasepfn(node, 0);
-        pfn_t slot_lastpfn = slot_firstpfn + slot_getsize(node, 0);
         pfn_t slot_freepfn = node_getfirstfree(node);
-        struct pglist_data *pd;
         unsigned long bootmap_size;
+        pfn_t start_pfn, end_pfn;
+
+        get_pfn_range_for_nid(node, &start_pfn, &end_pfn);
 
         /*
          * Allocate the node data structures on the node first.
          */
         __node_data[node] = __va(slot_freepfn << PAGE_SHIFT);
 
-        pd = NODE_DATA(node);
-        pd->bdata = &plat_node_bdata[node];
+        NODE_DATA(node)->bdata = &plat_node_bdata[node];
+        NODE_DATA(node)->node_start_pfn = start_pfn;
+        NODE_DATA(node)->node_spanned_pages = end_pfn - start_pfn;
 
         cpus_clear(hub_data(node)->h_cpus);
 
@@ -461,12 +413,12 @@ static void __init node_mem_init(cnodeid_t node)
                                sizeof(struct hub_data));
 
         bootmap_size = init_bootmem_node(NODE_DATA(node), slot_freepfn,
-                                        slot_firstpfn, slot_lastpfn);
-        free_bootmem_node(NODE_DATA(node), slot_firstpfn << PAGE_SHIFT,
-                        (slot_lastpfn - slot_firstpfn) << PAGE_SHIFT);
+                                        start_pfn, end_pfn);
+        free_bootmem_with_active_regions(node, end_pfn);
         reserve_bootmem_node(NODE_DATA(node), slot_firstpfn << PAGE_SHIFT,
                 ((slot_freepfn - slot_firstpfn) << PAGE_SHIFT) + bootmap_size,
                 BOOTMEM_DEFAULT);
+        sparse_memory_present_with_active_regions(node);
 }
 
 /*
@@ -515,16 +467,15 @@ void __init paging_init(void)
         pagetable_init();
 
         for_each_online_node(node) {
-                pfn_t start_pfn = slot_getbasepfn(node, 0);
-                pfn_t end_pfn = node_getmaxclick(node) + 1;
+                pfn_t start_pfn, end_pfn;
 
-                zones_size[ZONE_NORMAL] = end_pfn - start_pfn;
-                free_area_init_node(node, NODE_DATA(node),
-                                zones_size, start_pfn, NULL);
+                get_pfn_range_for_nid(node, &start_pfn, &end_pfn);
 
                 if (end_pfn > max_low_pfn)
                         max_low_pfn = end_pfn;
         }
+        zones_size[ZONE_NORMAL] = max_low_pfn;
+        free_area_init_nodes(zones_size);
 }
 
 void __init mem_init(void)
@@ -535,34 +486,10 @@ void __init mem_init(void)
         high_memory = (void *) __va(num_physpages << PAGE_SHIFT);
 
         for_each_online_node(node) {
-                unsigned slot, numslots;
-                struct page *end, *p;
-
                 /*
                  * This will free up the bootmem, ie, slot 0 memory.
                  */
                 totalram_pages += free_all_bootmem_node(NODE_DATA(node));
-
-                /*
-                 * We need to manually do the other slots.
-                 */
-                numslots = node_getlastslot(node);
-                for (slot = 1; slot <= numslots; slot++) {
-                        p = nid_page_nr(node, slot_getbasepfn(node, slot) -
-                                              slot_getbasepfn(node, 0));
-
-                        /*
-                         * Free valid memory in current slot.
-                         */
-                        for (end = p + slot_getsize(node, slot); p < end; p++) {
-                                /* if (!page_is_ram(pgnr)) continue; */
-                                /* commented out until page_is_ram works */
-                                ClearPageReserved(p);
-                                init_page_count(p);
-                                __free_page(p);
-                                totalram_pages++;
-                        }
-                }
         }
 
         totalram_pages -= setup_zero_pages();   /* This comes from node 0 */
diff --git a/arch/mips/sgi-ip27/ip27-smp.c b/arch/mips/sgi-ip27/ip27-smp.c
index f15fc93d6b35..ba5cdebeaf0d 100644
--- a/arch/mips/sgi-ip27/ip27-smp.c
+++ b/arch/mips/sgi-ip27/ip27-smp.c
@@ -176,11 +176,14 @@ static void ip27_send_ipi_mask(cpumask_t mask, unsigned int action)
 static void __cpuinit ip27_init_secondary(void)
 {
         per_cpu_init();
-        local_irq_enable();
 }
 
 static void __cpuinit ip27_smp_finish(void)
 {
+        extern void hub_rt_clock_event_init(void);
+
+        hub_rt_clock_event_init();
+        local_irq_enable();
 }
 
 static void __init ip27_cpus_done(void)
diff --git a/arch/mips/sgi-ip27/ip27-timer.c b/arch/mips/sgi-ip27/ip27-timer.c
index 9cebc9e7da63..8b4e854af925 100644
--- a/arch/mips/sgi-ip27/ip27-timer.c
+++ b/arch/mips/sgi-ip27/ip27-timer.c
@@ -160,10 +160,13 @@ static void rt_set_mode(enum clock_event_mode mode,
 
 int rt_timer_irq;
 
+static DEFINE_PER_CPU(struct clock_event_device, hub_rt_clockevent);
+static DEFINE_PER_CPU(char [11], hub_rt_name);
+
 static irqreturn_t hub_rt_counter_handler(int irq, void *dev_id)
 {
-        struct clock_event_device *cd = dev_id;
         unsigned int cpu = smp_processor_id();
+        struct clock_event_device *cd = &per_cpu(hub_rt_clockevent, cpu);
         int slice = cputoslice(cpu);
 
         /*
@@ -192,10 +195,7 @@ struct irqaction hub_rt_irqaction = {
 #define NSEC_PER_CYCLE          800
 #define CYCLES_PER_SEC          (NSEC_PER_SEC / NSEC_PER_CYCLE)
 
-static DEFINE_PER_CPU(struct clock_event_device, hub_rt_clockevent);
-static DEFINE_PER_CPU(char [11], hub_rt_name);
-
-static void __cpuinit hub_rt_clock_event_init(void)
+void __cpuinit hub_rt_clock_event_init(void)
 {
         unsigned int cpu = smp_processor_id();
         struct clock_event_device *cd = &per_cpu(hub_rt_clockevent, cpu);
@@ -203,17 +203,16 @@ static void __cpuinit hub_rt_clock_event_init(void)
         int irq = rt_timer_irq;
 
         sprintf(name, "hub-rt %d", cpu);
-        cd->name                = "HUB-RT",
-        cd->features            = CLOCK_EVT_FEAT_ONESHOT,
+        cd->name                = name;
+        cd->features            = CLOCK_EVT_FEAT_ONESHOT;
         clockevent_set_clock(cd, CYCLES_PER_SEC);
         cd->max_delta_ns        = clockevent_delta2ns(0xfffffffffffff, cd);
         cd->min_delta_ns        = clockevent_delta2ns(0x300, cd);
-        cd->rating              = 200,
-        cd->irq                 = irq,
-        cd->cpumask             = cpumask_of_cpu(cpu),
-        cd->rating              = 300,
-        cd->set_next_event      = rt_next_event,
-        cd->set_mode            = rt_set_mode,
+        cd->rating              = 200;
+        cd->irq                 = irq;
+        cd->cpumask             = cpumask_of_cpu(cpu);
+        cd->set_next_event      = rt_next_event;
+        cd->set_mode            = rt_set_mode;
         clockevents_register_device(cd);
 }
 
@@ -261,6 +260,7 @@ void __init plat_time_init(void)
 {
         hub_rt_clocksource_init();
         hub_rt_clock_event_global_init();
+        hub_rt_clock_event_init();
 }
 
 void __cpuinit cpu_time_init(void)
@@ -281,7 +281,6 @@ void __cpuinit cpu_time_init(void)
 
         printk("CPU %d clock is %dMHz.\n", smp_processor_id(), cpu->cpu_speed);
 
-        hub_rt_clock_event_init();
         set_c0_status(SRB_TIMOCLK);
 }