15 files changed, 114 insertions, 48 deletions

diff --git a/arch/microblaze/include/asm/device.h b/arch/microblaze/include/asm/device.h
index 402b46e630f6..123b2fe72d01 100644
--- a/arch/microblaze/include/asm/device.h
+++ b/arch/microblaze/include/asm/device.h
@@ -12,29 +12,15 @@
 struct device_node;
 
 struct dev_archdata {
-        /* Optional pointer to an OF device node */
-        struct device_node      *of_node;
-
         /* DMA operations on that device */
         struct dma_map_ops      *dma_ops;
         void                    *dma_data;
 };
 
 struct pdev_archdata {
+        u64 dma_mask;
 };
 
-static inline void dev_archdata_set_node(struct dev_archdata *ad,
-                                         struct device_node *np)
-{
-        ad->of_node = np;
-}
-
-static inline struct device_node *
-dev_archdata_get_node(const struct dev_archdata *ad)
-{
-        return ad->of_node;
-}
-
 #endif /* _ASM_MICROBLAZE_DEVICE_H */
 
 
diff --git a/arch/microblaze/include/asm/of_device.h b/arch/microblaze/include/asm/of_device.h
index ba917cfaefe6..73cb98040982 100644
--- a/arch/microblaze/include/asm/of_device.h
+++ b/arch/microblaze/include/asm/of_device.h
@@ -21,9 +21,8 @@
  * probed using OF properties.
  */
 struct of_device {
-        struct device_node      *node; /* to be obsoleted */
-        u64                     dma_mask; /* DMA mask */
         struct device           dev; /* Generic device interface */
+        struct pdev_archdata    archdata;
 };
 
 extern ssize_t of_device_get_modalias(struct of_device *ofdev,
diff --git a/arch/microblaze/include/asm/scatterlist.h b/arch/microblaze/include/asm/scatterlist.h
index 35d786fe93ae..dc4a8900cc80 100644
--- a/arch/microblaze/include/asm/scatterlist.h
+++ b/arch/microblaze/include/asm/scatterlist.h
@@ -1 +1,3 @@
 #include <asm-generic/scatterlist.h>
+
+#define ISA_DMA_THRESHOLD       (~0UL)
diff --git a/arch/microblaze/include/asm/system.h b/arch/microblaze/include/asm/system.h
index 59efb3fef957..48c4f0335e3f 100644
--- a/arch/microblaze/include/asm/system.h
+++ b/arch/microblaze/include/asm/system.h
@@ -12,6 +12,7 @@
 #include <asm/registers.h>
 #include <asm/setup.h>
 #include <asm/irqflags.h>
+#include <asm/cache.h>
 
 #include <asm-generic/cmpxchg.h>
 #include <asm-generic/cmpxchg-local.h>
@@ -96,4 +97,14 @@ extern struct dentry *of_debugfs_root;
 
 #define arch_align_stack(x) (x)
 
+/*
+ * MicroBlaze doesn't handle unaligned accesses in hardware.
+ *
+ * Based on this we force the IP header alignment in network drivers.
+ * We also modify NET_SKB_PAD to be a cacheline in size, thus maintaining
+ * cacheline alignment of buffers.
+ */
+#define NET_IP_ALIGN    2
+#define NET_SKB_PAD     L1_CACHE_BYTES
+
 #endif /* _ASM_MICROBLAZE_SYSTEM_H */
diff --git a/arch/microblaze/include/asm/thread_info.h b/arch/microblaze/include/asm/thread_info.h
index b2ca80f64640..8a8e9fc6e0c0 100644
--- a/arch/microblaze/include/asm/thread_info.h
+++ b/arch/microblaze/include/asm/thread_info.h
@@ -122,7 +122,7 @@ static inline struct thread_info *current_thread_info(void)
 /* restore singlestep on return to user mode */
 #define TIF_SINGLESTEP          4
 #define TIF_IRET                5 /* return with iret */
-#define TIF_MEMDIE              6
+#define TIF_MEMDIE              6       /* is terminating due to OOM killer */
 #define TIF_SYSCALL_AUDIT       9       /* syscall auditing active */
 #define TIF_SECCOMP             10      /* secure computing */
 #define TIF_FREEZE              14      /* Freezing for suspend */
diff --git a/arch/microblaze/include/asm/uaccess.h b/arch/microblaze/include/asm/uaccess.h
index 446bec29b142..26460d15b338 100644
--- a/arch/microblaze/include/asm/uaccess.h
+++ b/arch/microblaze/include/asm/uaccess.h
@@ -182,6 +182,39 @@ extern long __user_bad(void);
  * Returns zero on success, or -EFAULT on error.
  * On error, the variable @x is set to zero.
  */
+#define get_user(x, ptr)                                                \
+        __get_user_check((x), (ptr), sizeof(*(ptr)))
+
+#define __get_user_check(x, ptr, size)                                  \
+({                                                                      \
+        unsigned long __gu_val = 0;                                     \
+        const typeof(*(ptr)) __user *__gu_addr = (ptr);                 \
+        int __gu_err = 0;                                               \
+                                                                        \
+        if (access_ok(VERIFY_READ, __gu_addr, size)) {                  \
+                switch (size) {                                         \
+                case 1:                                                 \
+                        __get_user_asm("lbu", __gu_addr, __gu_val,      \
+                                       __gu_err);                       \
+                        break;                                          \
+                case 2:                                                 \
+                        __get_user_asm("lhu", __gu_addr, __gu_val,      \
+                                       __gu_err);                       \
+                        break;                                          \
+                case 4:                                                 \
+                        __get_user_asm("lw", __gu_addr, __gu_val,       \
+                                       __gu_err);                       \
+                        break;                                          \
+                default:                                                \
+                        __gu_err = __user_bad();                        \
+                        break;                                          \
+                }                                                       \
+        } else {                                                        \
+                __gu_err = -EFAULT;                                     \
+        }                                                               \
+        x = (typeof(*(ptr)))__gu_val;                                   \
+        __gu_err;                                                       \
+})
 
 #define __get_user(x, ptr)                                              \
 ({                                                                      \
@@ -206,12 +239,6 @@ extern long __user_bad(void);
 })
 
 
-#define get_user(x, ptr)                                                \
-({                                                                      \
-        access_ok(VERIFY_READ, (ptr), sizeof(*(ptr)))                   \
-                ? __get_user((x), (ptr)) : -EFAULT;                     \
-})
-
 #define __put_user_asm(insn, __gu_ptr, __gu_val, __gu_err)      \
 ({                                                              \
         __asm__ __volatile__ (                                  \
@@ -266,6 +293,42 @@ extern long __user_bad(void);
  *
  * Returns zero on success, or -EFAULT on error.
  */
+#define put_user(x, ptr)                                                \
+        __put_user_check((x), (ptr), sizeof(*(ptr)))
+
+#define __put_user_check(x, ptr, size)                                  \
+({                                                                      \
+        typeof(*(ptr)) __pu_val;                                        \
+        typeof(*(ptr)) __user *__pu_addr = (ptr);                       \
+        int __pu_err = 0;                                               \
+                                                                        \
+        __pu_val = (x);                                                 \
+        if (access_ok(VERIFY_WRITE, __pu_addr, size)) {                 \
+                switch (size) {                                         \
+                case 1:                                                 \
+                        __put_user_asm("sb", __pu_addr, __pu_val,       \
+                                       __pu_err);                       \
+                        break;                                          \
+                case 2:                                                 \
+                        __put_user_asm("sh", __pu_addr, __pu_val,       \
+                                       __pu_err);                       \
+                        break;                                          \
+                case 4:                                                 \
+                        __put_user_asm("sw", __pu_addr, __pu_val,       \
+                                       __pu_err);                       \
+                        break;                                          \
+                case 8:                                                 \
+                        __put_user_asm_8(__pu_addr, __pu_val, __pu_err);\
+                        break;                                          \
+                default:                                                \
+                        __pu_err = __user_bad();                        \
+                        break;                                          \
+                }                                                       \
+        } else {                                                        \
+                __pu_err = -EFAULT;                                     \
+        }                                                               \
+        __pu_err;                                                       \
+})
 
 #define __put_user(x, ptr)                                              \
 ({                                                                      \
@@ -290,18 +353,6 @@ extern long __user_bad(void);
         __gu_err;                                                       \
 })
 
-#ifndef CONFIG_MMU
-
-#define put_user(x, ptr)        __put_user((x), (ptr))
-
-#else /* CONFIG_MMU */
-
-#define put_user(x, ptr)                                                \
-({                                                                      \
-        access_ok(VERIFY_WRITE, (ptr), sizeof(*(ptr)))                  \
-                ? __put_user((x), (ptr)) : -EFAULT;                     \
-})
-#endif /* CONFIG_MMU */
 
 /* copy_to_from_user */
 #define __copy_from_user(to, from, n)   \
diff --git a/arch/microblaze/kernel/cpu/cache.c b/arch/microblaze/kernel/cpu/cache.c
index 21c3a92394de..109876e8d643 100644
--- a/arch/microblaze/kernel/cpu/cache.c
+++ b/arch/microblaze/kernel/cpu/cache.c
@@ -137,8 +137,9 @@ do {									\
 do {                                                                    \
         int step = -line_length;                                        \
         int align = ~(line_length - 1);                                 \
+        int count;                                                      \
         end = ((end & align) == end) ? end - line_length : end & align; \
-        int count = end - start;                                        \
+        count = end - start;                                            \
         WARN_ON(count < 0);                                             \
                                                                         \
         __asm__ __volatile__ (" 1:      " #op " %0, %1;                 \
diff --git a/arch/microblaze/kernel/entry-nommu.S b/arch/microblaze/kernel/entry-nommu.S
index 391d6197fc3b..8cc18cd2cce6 100644
--- a/arch/microblaze/kernel/entry-nommu.S
+++ b/arch/microblaze/kernel/entry-nommu.S
@@ -476,6 +476,8 @@ ENTRY(ret_from_fork)
         nop
 
 work_pending:
+        enable_irq
+
         andi    r11, r19, _TIF_NEED_RESCHED
         beqi    r11, 1f
         bralid  r15, schedule
diff --git a/arch/microblaze/kernel/microblaze_ksyms.c b/arch/microblaze/kernel/microblaze_ksyms.c
index bc4dcb7d3861..ff85f7718035 100644
--- a/arch/microblaze/kernel/microblaze_ksyms.c
+++ b/arch/microblaze/kernel/microblaze_ksyms.c
@@ -52,3 +52,14 @@ EXPORT_SYMBOL_GPL(_ebss);
 extern void _mcount(void);
 EXPORT_SYMBOL(_mcount);
 #endif
+
+/*
+ * Assembly functions that may be used (directly or indirectly) by modules
+ */
+EXPORT_SYMBOL(__copy_tofrom_user);
+EXPORT_SYMBOL(__strncpy_user);
+
+#ifdef CONFIG_OPT_LIB_ASM
+EXPORT_SYMBOL(memcpy);
+EXPORT_SYMBOL(memmove);
+#endif
diff --git a/arch/microblaze/kernel/module.c b/arch/microblaze/kernel/module.c
index cbecf110dc30..0e73f6606547 100644
--- a/arch/microblaze/kernel/module.c
+++ b/arch/microblaze/kernel/module.c
@@ -16,6 +16,7 @@
 #include <linux/string.h>
 
 #include <asm/pgtable.h>
+#include <asm/cacheflush.h>
 
 void *module_alloc(unsigned long size)
 {
@@ -151,6 +152,7 @@ int apply_relocate_add(Elf32_Shdr *sechdrs, const char *strtab,
 int module_finalize(const Elf32_Ehdr *hdr, const Elf_Shdr *sechdrs,
                 struct module *module)
 {
+        flush_dcache();
         return 0;
 }
 
diff --git a/arch/microblaze/kernel/of_device.c b/arch/microblaze/kernel/of_device.c
index 9a0f7632c47c..b372787886ed 100644
--- a/arch/microblaze/kernel/of_device.c
+++ b/arch/microblaze/kernel/of_device.c
@@ -12,7 +12,7 @@
 void of_device_make_bus_id(struct of_device *dev)
 {
         static atomic_t bus_no_reg_magic;
-        struct device_node *node = dev->node;
+        struct device_node *node = dev->dev.of_node;
         const u32 *reg;
         u64 addr;
         int magic;
@@ -49,11 +49,10 @@ struct of_device *of_device_alloc(struct device_node *np,
         if (!dev)
                 return NULL;
 
-        dev->node = of_node_get(np);
-        dev->dev.dma_mask = &dev->dma_mask;
+        dev->dev.of_node = of_node_get(np);
+        dev->dev.dma_mask = &dev->archdata.dma_mask;
         dev->dev.parent = parent;
         dev->dev.release = of_release_dev;
-        dev->dev.archdata.of_node = np;
 
         if (bus_id)
                 dev_set_name(&dev->dev, bus_id);
@@ -75,17 +74,17 @@ int of_device_uevent(struct device *dev, struct kobj_uevent_env *env)
 
         ofdev = to_of_device(dev);
 
-        if (add_uevent_var(env, "OF_NAME=%s", ofdev->node->name))
+        if (add_uevent_var(env, "OF_NAME=%s", ofdev->dev.of_node->name))
                 return -ENOMEM;
 
-        if (add_uevent_var(env, "OF_TYPE=%s", ofdev->node->type))
+        if (add_uevent_var(env, "OF_TYPE=%s", ofdev->dev.of_node->type))
                 return -ENOMEM;
 
         /* Since the compatible field can contain pretty much anything
          * it's not really legal to split it out with commas. We split it
          * up using a number of environment variables instead. */
 
-        compat = of_get_property(ofdev->node, "compatible", &cplen);
+        compat = of_get_property(ofdev->dev.of_node, "compatible", &cplen);
         while (compat && *compat && cplen > 0) {
                 if (add_uevent_var(env, "OF_COMPATIBLE_%d=%s", seen, compat))
                         return -ENOMEM;
diff --git a/arch/microblaze/kernel/of_platform.c b/arch/microblaze/kernel/of_platform.c
index 0dc755286d38..ccf6f4257f4b 100644
--- a/arch/microblaze/kernel/of_platform.c
+++ b/arch/microblaze/kernel/of_platform.c
@@ -47,7 +47,7 @@ struct of_device *of_platform_device_create(struct device_node *np,
         if (!dev)
                 return NULL;
 
-        dev->dma_mask = 0xffffffffUL;
+        dev->archdata.dma_mask = 0xffffffffUL;
         dev->dev.bus = &of_platform_bus_type;
 
         /* We do not fill the DMA ops for platform devices by default.
@@ -166,7 +166,7 @@ EXPORT_SYMBOL(of_platform_bus_probe);
 
 static int of_dev_node_match(struct device *dev, void *data)
 {
-        return to_of_device(dev)->node == data;
+        return to_of_device(dev)->dev.of_node == data;
 }
 
 struct of_device *of_find_device_by_node(struct device_node *np)
@@ -184,7 +184,7 @@ EXPORT_SYMBOL(of_find_device_by_node);
 static int of_dev_phandle_match(struct device *dev, void *data)
 {
         phandle *ph = data;
-        return to_of_device(dev)->node->phandle == *ph;
+        return to_of_device(dev)->dev.of_node->phandle == *ph;
 }
 
 struct of_device *of_find_device_by_phandle(phandle ph)
diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
index f42c2dde8b1c..cca3579d4268 100644
--- a/arch/microblaze/mm/init.c
+++ b/arch/microblaze/mm/init.c
@@ -47,6 +47,7 @@ unsigned long memory_start;
 EXPORT_SYMBOL(memory_start);
 unsigned long memory_end; /* due to mm/nommu.c */
 unsigned long memory_size;
+EXPORT_SYMBOL(memory_size);
 
 /*
  * paging_init() sets up the page tables - in fact we've already done this.
diff --git a/arch/microblaze/mm/pgtable.c b/arch/microblaze/mm/pgtable.c
index 784557fb28cf..59bf2335a4ce 100644
--- a/arch/microblaze/mm/pgtable.c
+++ b/arch/microblaze/mm/pgtable.c
@@ -42,6 +42,7 @@
 
 unsigned long ioremap_base;
 unsigned long ioremap_bot;
+EXPORT_SYMBOL(ioremap_bot);
 
 /* The maximum lowmem defaults to 768Mb, but this can be configured to
  * another value.
diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index 01c8c97c15b7..9cb782b8e036 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -1507,7 +1507,7 @@ void pcibios_finish_adding_to_bus(struct pci_bus *bus)
         pci_bus_add_devices(bus);
 
         /* Fixup EEH */
-        eeh_add_device_tree_late(bus);
+        /* eeh_add_device_tree_late(bus); */
 }
 EXPORT_SYMBOL_GPL(pcibios_finish_adding_to_bus);