Merge branch 'highmem' into devel

Conflicts:

	arch/arm/mach-clps7500/include/mach/memory.h

arch/arm/include/asm/memory.h

@@ -112,10 +112,8 @@
  * private definitions which should NOT be used outside memory.h
  * files.  Use virt_to_phys/phys_to_virt/__pa/__va instead.
  */
-#ifndef __virt_to_phys
 #define __virt_to_phys(x)	((x) - PAGE_OFFSET + PHYS_OFFSET)
 #define __phys_to_virt(x)	((x) - PHYS_OFFSET + PAGE_OFFSET)
-#endif
 
 /*
  * Convert a physical address to a Page Frame Number and back
@@ -180,6 +178,11 @@ static inline void *phys_to_virt(unsigned long x)
  * memory.  Use of these is *deprecated* (and that doesn't mean
  * use the __ prefixed forms instead.)  See dma-mapping.h.
  */
+#ifndef __virt_to_bus
+#define __virt_to_bus	__virt_to_phys
+#define __bus_to_virt	__phys_to_virt
+#endif
+
 static inline __deprecated unsigned long virt_to_bus(void *x)
 {
 	return __virt_to_bus((unsigned long)x);

arch/arm/include/asm/page.h

@@ -108,30 +108,36 @@
 #error Unknown user operations model
 #endif
 
+struct page;
+
 struct cpu_user_fns {
-	void (*cpu_clear_user_page)(void *p, unsigned long user);
-	void (*cpu_copy_user_page)(void *to, const void *from,
-				   unsigned long user);
+	void (*cpu_clear_user_highpage)(struct page *page, unsigned long vaddr);
+	void (*cpu_copy_user_highpage)(struct page *to, struct page *from,
+			unsigned long vaddr);
 };
 
 #ifdef MULTI_USER
 extern struct cpu_user_fns cpu_user;
 
-#define __cpu_clear_user_page	cpu_user.cpu_clear_user_page
-#define __cpu_copy_user_page	cpu_user.cpu_copy_user_page
+#define __cpu_clear_user_highpage	cpu_user.cpu_clear_user_highpage
+#define __cpu_copy_user_highpage	cpu_user.cpu_copy_user_highpage
 
 #else
 
-#define __cpu_clear_user_page	__glue(_USER,_clear_user_page)
-#define __cpu_copy_user_page	__glue(_USER,_copy_user_page)
+#define __cpu_clear_user_highpage	__glue(_USER,_clear_user_highpage)
+#define __cpu_copy_user_highpage	__glue(_USER,_copy_user_highpage)
 
-extern void __cpu_clear_user_page(void *p, unsigned long user);
-extern void __cpu_copy_user_page(void *to, const void *from,
-				 unsigned long user);
+extern void __cpu_clear_user_highpage(struct page *page, unsigned long vaddr);
+extern void __cpu_copy_user_highpage(struct page *to, struct page *from,
+			unsigned long vaddr);
 #endif
 
-#define clear_user_page(addr,vaddr,pg)	 __cpu_clear_user_page(addr, vaddr)
-#define copy_user_page(to,from,vaddr,pg) __cpu_copy_user_page(to, from, vaddr)
+#define clear_user_highpage(page,vaddr)		\
+	 __cpu_clear_user_highpage(page, vaddr)
+
+#define __HAVE_ARCH_COPY_USER_HIGHPAGE
+#define copy_user_highpage(to,from,vaddr,vma)	\
+	__cpu_copy_user_highpage(to, from, vaddr)
 
 #define clear_page(page)	memset((void *)(page), 0, PAGE_SIZE)
 extern void copy_page(void *to, const void *from);

arch/arm/include/asm/setup.h

@@ -209,9 +209,11 @@ struct meminfo {
 	struct membank bank[NR_BANKS];
 };
 
+extern struct meminfo meminfo;
+
 #define for_each_nodebank(iter,mi,no)			\
-	for (iter = 0; iter < mi->nr_banks; iter++)	\
-		if (mi->bank[iter].node == no)
+	for (iter = 0; iter < (mi)->nr_banks; iter++)	\
+		if ((mi)->bank[iter].node == no)
 
 #define bank_pfn_start(bank)	__phys_to_pfn((bank)->start)
 #define bank_pfn_end(bank)	__phys_to_pfn((bank)->start + (bank)->size)

arch/arm/kernel/setup.c

@@ -59,7 +59,7 @@ static int __init fpe_setup(char *line)
 __setup("fpe=", fpe_setup);
 #endif
 
-extern void paging_init(struct meminfo *, struct machine_desc *desc);
+extern void paging_init(struct machine_desc *desc);
 extern void reboot_setup(char *str);
 extern void _text, _etext, __data_start, _edata, _end;
 
@@ -112,7 +112,6 @@ static struct stack stacks[NR_CPUS];
 char elf_platform[ELF_PLATFORM_SIZE];
 EXPORT_SYMBOL(elf_platform);
 
-static struct meminfo meminfo __initdata = { 0, };
 static const char *cpu_name;
 static const char *machine_name;
 static char __initdata command_line[COMMAND_LINE_SIZE];
@@ -367,21 +366,34 @@ static struct machine_desc * __init setup_machine(unsigned int nr)
 	return list;
 }
 
-static void __init arm_add_memory(unsigned long start, unsigned long size)
+static int __init arm_add_memory(unsigned long start, unsigned long size)
 {
-	struct membank *bank;
+	struct membank *bank = &meminfo.bank[meminfo.nr_banks];
+
+	if (meminfo.nr_banks >= NR_BANKS) {
+		printk(KERN_CRIT "NR_BANKS too low, "
+			"ignoring memory at %#lx\n", start);
+		return -EINVAL;
+	}
 
 	/*
 	 * Ensure that start/size are aligned to a page boundary.
 	 * Size is appropriately rounded down, start is rounded up.
 	 */
 	size -= start & ~PAGE_MASK;
-
-	bank = &meminfo.bank[meminfo.nr_banks++];
-
 	bank->start = PAGE_ALIGN(start);
 	bank->size  = size & PAGE_MASK;
 	bank->node  = PHYS_TO_NID(start);
+
+	/*
+	 * Check whether this memory region has non-zero size or
+	 * invalid node number.
+	 */
+	if (bank->size == 0 || bank->node >= MAX_NUMNODES)
+		return -EINVAL;
+
+	meminfo.nr_banks++;
+	return 0;
 }
 
 /*
@@ -539,14 +551,7 @@ __tagtable(ATAG_CORE, parse_tag_core);
 
 static int __init parse_tag_mem32(const struct tag *tag)
 {
-	if (meminfo.nr_banks >= NR_BANKS) {
-		printk(KERN_WARNING
-		       "Ignoring memory bank 0x%08x size %dKB\n",
-			tag->u.mem.start, tag->u.mem.size / 1024);
-		return -EINVAL;
-	}
-	arm_add_memory(tag->u.mem.start, tag->u.mem.size);
-	return 0;
+	return arm_add_memory(tag->u.mem.start, tag->u.mem.size);
 }
 
 __tagtable(ATAG_MEM, parse_tag_mem32);
@@ -718,7 +723,7 @@ void __init setup_arch(char **cmdline_p)
 	memcpy(boot_command_line, from, COMMAND_LINE_SIZE);
 	boot_command_line[COMMAND_LINE_SIZE-1] = '\0';
 	parse_cmdline(cmdline_p, from);
-	paging_init(&meminfo, mdesc);
+	paging_init(mdesc);
 	request_standard_resources(&meminfo, mdesc);
 
 #ifdef CONFIG_SMP

arch/arm/mach-aaec2000/include/mach/memory.h

@@ -14,9 +14,6 @@
 
 #define PHYS_OFFSET	UL(0xf0000000)
 
-#define __virt_to_bus(x)	__virt_to_phys(x)
-#define __bus_to_virt(x)	__phys_to_virt(x)
-
 /*
  * The nodes are the followings:
  *

arch/arm/mach-at91/include/mach/memory.h

@@ -25,15 +25,4 @@
 
 #define PHYS_OFFSET	(AT91_SDRAM_BASE)
 
-
-/*
- * Virtual view <-> DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *              address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *              to an address that the kernel can use.
- */
-#define __virt_to_bus(x) __virt_to_phys(x)
-#define __bus_to_virt(x) __phys_to_virt(x)
-
 #endif

arch/arm/mach-clps711x/include/mach/memory.h

@@ -26,25 +26,7 @@
  */
 #define PHYS_OFFSET	UL(0xc0000000)
 
-/*
- * Virtual view <-> DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *              address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *              to an address that the kernel can use.
- */
-
-#if defined(CONFIG_ARCH_CDB89712)
-
-#define __virt_to_bus(x)	(x)
-#define __bus_to_virt(x)	(x)
-
-#elif defined (CONFIG_ARCH_AUTCPU12)
-
-#define __virt_to_bus(x)	(x)
-#define __bus_to_virt(x)	(x)
-
-#else
+#if !defined(CONFIG_ARCH_CDB89712) && !defined (CONFIG_ARCH_AUTCPU12)
 
 #define __virt_to_bus(x)	((x) - PAGE_OFFSET)
 #define __bus_to_virt(x)	((x) + PAGE_OFFSET)

arch/arm/mach-davinci/include/mach/memory.h

@@ -55,10 +55,4 @@ __arch_adjust_zones(int node, unsigned long *size, unsigned long *holes)
 
 #endif
 
-/*
- * Bus address is physical address
- */
-#define __virt_to_bus(x)	__virt_to_phys(x)
-#define __bus_to_virt(x)	__phys_to_virt(x)
-
 #endif /* __ASM_ARCH_MEMORY_H */

arch/arm/mach-ebsa110/include/mach/memory.h

@@ -21,13 +21,6 @@
  */
 #define PHYS_OFFSET	UL(0x00000000)
 
-/*
- * We keep this 1:1 so that we don't interfere
- * with the PCMCIA memory regions
- */
-#define __virt_to_bus(x)	(x)
-#define __bus_to_virt(x)	(x)
-
 /*
  * Cache flushing area - SRAM
  */

arch/arm/mach-ep93xx/include/mach/memory.h

@@ -7,8 +7,4 @@
 
 #define PHYS_OFFSET		UL(0x00000000)
 
-#define __bus_to_virt(x)	__phys_to_virt(x)
-#define __virt_to_bus(x)	__virt_to_phys(x)
-
-
 #endif

arch/arm/mach-footbridge/include/mach/memory.h

@@ -30,9 +30,18 @@
 extern unsigned long __virt_to_bus(unsigned long);
 extern unsigned long __bus_to_virt(unsigned long);
 #endif
+#define __virt_to_bus	__virt_to_bus
+#define __bus_to_virt	__bus_to_virt
 
 #elif defined(CONFIG_FOOTBRIDGE_HOST)
 
+/*
+ * The footbridge is programmed to expose the system RAM at the corresponding
+ * address.  So, if PAGE_OFFSET is 0xc0000000, RAM appears at 0xe0000000.
+ * If 0x80000000, then its exposed at 0xa0000000 on the bus. etc.
+ * The only requirement is that the RAM isn't placed at bus address 0 which
+ * would clash with VGA cards.
+ */
 #define __virt_to_bus(x)	((x) - 0xe0000000)
 #define __bus_to_virt(x)	((x) + 0xe0000000)
 

arch/arm/mach-h720x/include/mach/memory.h

@@ -7,23 +7,6 @@
 #ifndef __ASM_ARCH_MEMORY_H
 #define __ASM_ARCH_MEMORY_H
 
-/*
- * Page offset:
- *    ( 0xc0000000UL )
- */
 #define PHYS_OFFSET	UL(0x40000000)
 
-/*
- * Virtual view <-> DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *              address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *              to an address that the kernel can use.
- *
- * There is something to do here later !, Mar 2000, Jungjun Kim
- */
-
-#define __virt_to_bus(x)	__virt_to_phys(x)
-#define __bus_to_virt(x)	__phys_to_virt(x)
-
 #endif

arch/arm/mach-imx/include/mach/memory.h

@@ -23,14 +23,4 @@
 
 #define PHYS_OFFSET	UL(0x08000000)
 
-/*
- * Virtual view <-> DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *              address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *              to an address that the kernel can use.
- */
-#define __virt_to_bus(x)	(x - PAGE_OFFSET + PHYS_OFFSET)
-#define __bus_to_virt(x)	(x - PHYS_OFFSET + PAGE_OFFSET)
-
 #endif

arch/arm/mach-integrator/include/mach/memory.h

@@ -24,15 +24,8 @@
  * Physical DRAM offset.
  */
 #define PHYS_OFFSET	UL(0x00000000)
-#define BUS_OFFSET	UL(0x80000000)
 
-/*
- * Virtual view <-> DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *              address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *              to an address that the kernel can use.
- */
+#define BUS_OFFSET	UL(0x80000000)
 #define __virt_to_bus(x)	(x - PAGE_OFFSET + BUS_OFFSET)
 #define __bus_to_virt(x)	(x - BUS_OFFSET + PAGE_OFFSET)
 

arch/arm/mach-iop13xx/include/mach/memory.h

@@ -16,18 +16,6 @@
 #define IOP13XX_PMMR_P_START (IOP13XX_PMMR_PHYS_MEM_BASE)
 #define IOP13XX_PMMR_P_END   (IOP13XX_PMMR_PHYS_MEM_BASE + IOP13XX_PMMR_SIZE)
 
-/*
- * Virtual view <-> PCI DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *		address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *		to an address that the kernel can use.
- */
-
-/* RAM has 1:1 mapping on the PCIe/x Busses */
-#define __virt_to_bus(x)	(__virt_to_phys(x))
-#define __bus_to_virt(x)	(__phys_to_virt(x))
-
 static inline dma_addr_t __virt_to_lbus(unsigned long x)
 {
 	return x + IOP13XX_PMMR_PHYS_MEM_BASE - IOP13XX_PMMR_VIRT_MEM_BASE;
@@ -55,7 +43,7 @@ static inline unsigned long __lbus_to_virt(dma_addr_t x)
 		if (is_lbus_device(dev) && __is_lbus_dma(__dma))	\
 			__virt = __lbus_to_virt(__dma);			\
 		else							\
-			__virt = __bus_to_virt(__dma);			\
+			__virt = __phys_to_virt(__dma);			\
 		(void *)__virt;						\
 	})
 
@@ -66,7 +54,7 @@ static inline unsigned long __lbus_to_virt(dma_addr_t x)
 		if (is_lbus_device(dev) && __is_lbus_virt(__virt))	\
 			__dma = __virt_to_lbus(__virt);			\
 		else							\
-			__dma = __virt_to_bus(__virt);			\
+			__dma = __virt_to_phys(__virt);			\
 		__dma;							\
 	})
 

arch/arm/mach-iop32x/include/mach/memory.h

@@ -12,15 +12,4 @@
  */
 #define PHYS_OFFSET	UL(0xa0000000)
 
-/*
- * Virtual view <-> PCI DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *		address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *		to an address that the kernel can use.
- */
-#define __virt_to_bus(x)	(__virt_to_phys(x))
-#define __bus_to_virt(x)	(__phys_to_virt(x))
-
-
 #endif

arch/arm/mach-iop33x/include/mach/memory.h

@@ -12,15 +12,4 @@
  */
 #define PHYS_OFFSET	UL(0x00000000)
 
-/*
- * Virtual view <-> PCI DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *		address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *		to an address that the kernel can use.
- */
-#define __virt_to_bus(x)	(__virt_to_phys(x))
-#define __bus_to_virt(x)	(__phys_to_virt(x))
-
-
 #endif

arch/arm/mach-ixp2000/include/mach/memory.h

@@ -15,13 +15,6 @@
 
 #define PHYS_OFFSET	UL(0x00000000)
 
-/*
- * Virtual view <-> DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *		address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *		to an address that the kernel can use.
- */
 #include <mach/ixp2000-regs.h>
 
 #define __virt_to_bus(v) \

arch/arm/mach-ixp23xx/include/mach/memory.h

@@ -19,16 +19,6 @@
  */
 #define PHYS_OFFSET		(0x00000000)
 
-
-/*
- * Virtual view <-> DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *		address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *		to an address that the kernel can use.
- */
-#ifndef __ASSEMBLY__
-
 #define __virt_to_bus(v)						\
 	({ unsigned int ret;						\
 	ret = ((__virt_to_phys(v) - 0x00000000) +			\
@@ -43,6 +33,3 @@
 #define arch_is_coherent()	1
 
 #endif
-
-
-#endif

arch/arm/mach-ixp4xx/include/mach/memory.h

@@ -25,16 +25,4 @@ void ixp4xx_adjust_zones(int node, unsigned long *size, unsigned long *holes);
 
 #endif
 
-/*
- * Virtual view <-> DMA view memory address translations
- * virt_to_bus: Used to translate the virtual address to an
- *		address suitable to be passed to set_dma_addr
- * bus_to_virt: Used to convert an address for DMA operations
- *		to an address that the kernel can use.
- *
- * These are dummies for now.
- */
-#define __virt_to_bus(x)	 __virt_to_phys(x)
-#define __bus_to_virt(x)	 __phys_to_virt(x)
-
 #endif