10 files changed, 69 insertions, 21 deletions

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 4758a8fd3e99..c3abed332301 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1702,6 +1702,7 @@ endchoice
 
 config KVM_GUEST
         bool "KVM Guest Kernel"
+        depends on BROKEN_ON_SMP
         help
           Select this option if building a guest kernel for KVM (Trap & Emulate) mode
 
diff --git a/arch/mips/cavium-octeon/octeon-platform.c b/arch/mips/cavium-octeon/octeon-platform.c
index 7b746e7bf7a1..1830874ff1e2 100644
--- a/arch/mips/cavium-octeon/octeon-platform.c
+++ b/arch/mips/cavium-octeon/octeon-platform.c
@@ -334,9 +334,10 @@ static void __init octeon_fdt_pip_iface(int pip, int idx, u64 *pmac)
         char name_buffer[20];
         int iface;
         int p;
-        int count;
+        int count = 0;
 
-        count = cvmx_helper_interface_enumerate(idx);
+        if (cvmx_helper_interface_enumerate(idx) == 0)
+                count = cvmx_helper_ports_on_interface(idx);
 
         snprintf(name_buffer, sizeof(name_buffer), "interface@%d", idx);
         iface = fdt_subnode_offset(initial_boot_params, pip, name_buffer);
diff --git a/arch/mips/kernel/smp-bmips.c b/arch/mips/kernel/smp-bmips.c
index 76f31353e718..c0bb4d59076a 100644
--- a/arch/mips/kernel/smp-bmips.c
+++ b/arch/mips/kernel/smp-bmips.c
@@ -173,7 +173,7 @@ static void bmips_boot_secondary(int cpu, struct task_struct *idle)
         else {
 #if defined(CONFIG_CPU_BMIPS4350) || defined(CONFIG_CPU_BMIPS4380)
                 /* Reset slave TP1 if booting from TP0 */
-                if (cpu_logical_map(cpu) == 0)
+                if (cpu_logical_map(cpu) == 1)
                         set_c0_brcm_cmt_ctrl(0x01);
 #elif defined(CONFIG_CPU_BMIPS5000)
                 if (cpu & 0x01)
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index c89568f88bfd..aec3408edd4b 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -1242,7 +1242,6 @@ asmlinkage void do_mcheck(struct pt_regs *regs)
         panic("Caught Machine Check exception - %scaused by multiple "
               "matching entries in the TLB.",
               (multi_match) ? "" : "not ");
-        exception_exit(prev_state);
 }
 
 asmlinkage void do_mt(struct pt_regs *regs)
diff --git a/arch/mips/kvm/Kconfig b/arch/mips/kvm/Kconfig
index 2c15590e55f7..30e334e823bd 100644
--- a/arch/mips/kvm/Kconfig
+++ b/arch/mips/kvm/Kconfig
@@ -5,7 +5,6 @@ source "virt/kvm/Kconfig"
 
 menuconfig VIRTUALIZATION
         bool "Virtualization"
-        depends on HAVE_KVM
         ---help---
           Say Y here to get to see options for using your Linux host to run
           other operating systems inside virtual machines (guests).
diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c
index 34fce2b2095b..556cb4815770 100644
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -1456,7 +1456,7 @@ static void build_r4000_setup_pgd(void)
 {
         const int a0 = 4;
         const int a1 = 5;
-        u32 *p = tlbmiss_handler_setup_pgd_array;
+        u32 *p = tlbmiss_handler_setup_pgd;
         const int tlbmiss_handler_setup_pgd_size =
                 tlbmiss_handler_setup_pgd_end - tlbmiss_handler_setup_pgd;
         struct uasm_label *l = labels;
@@ -1793,7 +1793,7 @@ static void build_r3000_tlb_store_handler(void)
         uasm_i_j(&p, (unsigned long)tlb_do_page_fault_1 & 0x0fffffff);
         uasm_i_nop(&p);
 
-        if (p >= handle_tlbs)
+        if (p >= handle_tlbs_end)
                 panic("TLB store handler fastpath space exceeded");
 
         uasm_resolve_relocs(relocs, labels);
diff --git a/arch/mips/netlogic/common/irq.c b/arch/mips/netlogic/common/irq.c
index 73facb2b33bb..1c7e3a1b81ab 100644
--- a/arch/mips/netlogic/common/irq.c
+++ b/arch/mips/netlogic/common/irq.c
@@ -40,6 +40,10 @@
 #include <linux/slab.h>
 #include <linux/irq.h>
 
+#include <linux/irqdomain.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+
 #include <asm/errno.h>
 #include <asm/signal.h>
 #include <asm/ptrace.h>
@@ -223,17 +227,6 @@ static void nlm_init_node_irqs(int node)
         nodep->irqmask = irqmask;
 }
 
-void __init arch_init_irq(void)
-{
-        /* Initialize the irq descriptors */
-        nlm_init_percpu_irqs();
-        nlm_init_node_irqs(0);
-        write_c0_eimr(nlm_current_node()->irqmask);
-#if defined(CONFIG_CPU_XLR)
-        nlm_setup_fmn_irq();
-#endif
-}
-
 void nlm_smp_irq_init(int hwcpuid)
 {
         int node, cpu;
@@ -266,3 +259,56 @@ asmlinkage void plat_irq_dispatch(void)
         /* top level irq handling */
         do_IRQ(nlm_irq_to_xirq(node, i));
 }
+
+#ifdef CONFIG_OF
+static struct irq_domain *xlp_pic_domain;
+
+static const struct irq_domain_ops xlp_pic_irq_domain_ops = {
+        .xlate = irq_domain_xlate_onetwocell,
+};
+
+static int __init xlp_of_pic_init(struct device_node *node,
+                                        struct device_node *parent)
+{
+        const int n_picirqs = PIC_IRT_LAST_IRQ - PIC_IRQ_BASE + 1;
+        struct resource res;
+        int socid, ret;
+
+        /* we need a hack to get the PIC's SoC chip id */
+        ret = of_address_to_resource(node, 0, &res);
+        if (ret < 0) {
+                pr_err("PIC %s: reg property not found!\n", node->name);
+                return -EINVAL;
+        }
+        socid = (res.start >> 18) & 0x3;
+        xlp_pic_domain = irq_domain_add_legacy(node, n_picirqs,
+                nlm_irq_to_xirq(socid, PIC_IRQ_BASE), PIC_IRQ_BASE,
+                &xlp_pic_irq_domain_ops, NULL);
+        if (xlp_pic_domain == NULL) {
+                pr_err("PIC %s: Creating legacy domain failed!\n", node->name);
+                return -EINVAL;
+        }
+        pr_info("Node %d: IRQ domain created for PIC@%pa\n", socid,
+                                                        &res.start);
+        return 0;
+}
+
+static struct of_device_id __initdata xlp_pic_irq_ids[] = {
+        { .compatible = "netlogic,xlp-pic", .data = xlp_of_pic_init },
+        {},
+};
+#endif
+
+void __init arch_init_irq(void)
+{
+        /* Initialize the irq descriptors */
+        nlm_init_percpu_irqs();
+        nlm_init_node_irqs(0);
+        write_c0_eimr(nlm_current_node()->irqmask);
+#if defined(CONFIG_CPU_XLR)
+        nlm_setup_fmn_irq();
+#endif
+#if defined(CONFIG_OF)
+        of_irq_init(xlp_pic_irq_ids);
+#endif
+}
diff --git a/arch/mips/netlogic/dts/xlp_evp.dts b/arch/mips/netlogic/dts/xlp_evp.dts
index e14f42308064..06407033678e 100644
--- a/arch/mips/netlogic/dts/xlp_evp.dts
+++ b/arch/mips/netlogic/dts/xlp_evp.dts
@@ -76,10 +76,11 @@
                         };
                 };
                 pic: pic@4000 {
-                        interrupt-controller;
+                        compatible = "netlogic,xlp-pic";
                         #address-cells = <0>;
                         #interrupt-cells = <1>;
                         reg = <0 0x4000 0x200>;
+                        interrupt-controller;
                 };
 
                 nor_flash@1,0 {
diff --git a/arch/mips/netlogic/dts/xlp_svp.dts b/arch/mips/netlogic/dts/xlp_svp.dts
index 8af4bdbe5d99..9c5db102df53 100644
--- a/arch/mips/netlogic/dts/xlp_svp.dts
+++ b/arch/mips/netlogic/dts/xlp_svp.dts
@@ -76,10 +76,11 @@
                         };
                 };
                 pic: pic@4000 {
-                        interrupt-controller;
+                        compatible = "netlogic,xlp-pic";
                         #address-cells = <0>;
                         #interrupt-cells = <1>;
                         reg = <0 0x4000 0x200>;
+                        interrupt-controller;
                 };
 
                 nor_flash@1,0 {
diff --git a/arch/mips/netlogic/xlp/usb-init.c b/arch/mips/netlogic/xlp/usb-init.c
index 9c401dd78337..ef3897ef0dc7 100644
--- a/arch/mips/netlogic/xlp/usb-init.c
+++ b/arch/mips/netlogic/xlp/usb-init.c
@@ -119,7 +119,7 @@ static u64 xlp_usb_dmamask = ~(u32)0;
 static void nlm_usb_fixup_final(struct pci_dev *dev)
 {
         dev->dev.dma_mask               = &xlp_usb_dmamask;
-        dev->dev.coherent_dma_mask      = DMA_BIT_MASK(64);
+        dev->dev.coherent_dma_mask      = DMA_BIT_MASK(32);
         switch (dev->devfn) {
         case 0x10:
                 dev->irq = PIC_EHCI_0_IRQ;