Merge samba.org:/home/paulus/kernel/linux-2.5

into samba.org:/home/paulus/kernel/for-linus-ppc

arch/ppc/Kconfig

@@ -1111,7 +1111,7 @@ config HIGHMEM_START
 
 config LOWMEM_SIZE_BOOL
 	bool "Set maximum low memory"
-	depends on ADVANCED_OPTIONS && HIGHMEM
+	depends on ADVANCED_OPTIONS
 	help
 	  This option allows you to set the maximum amount of memory which
 	  will be used as "low memory", that is, memory which the kernel can

arch/ppc/Makefile

@@ -11,10 +11,10 @@
 #
 
 # This must match PAGE_OFFSET in include/asm-ppc/page.h.
-KERNELLOAD	=$(CONFIG_KERNEL_START)
+KERNELLOAD	:= $(CONFIG_KERNEL_START)
 
 LDFLAGS_BLOB	:= --format binary --oformat elf32-powerpc
-LDFLAGS_vmlinux	= -Ttext $(KERNELLOAD) -Bstatic
+LDFLAGS_vmlinux	:= -Ttext $(KERNELLOAD) -Bstatic
 CPPFLAGS	+= -Iarch/$(ARCH)
 AFLAGS		+= -Iarch/$(ARCH)
 cflags-y	+= -Iarch/$(ARCH) -msoft-float -pipe \

arch/ppc/boot/Makefile

@@ -13,28 +13,17 @@
 CFLAGS	 	+= -fno-builtin -D__BOOTER__ -Iarch/$(ARCH)/boot/include
 HOSTCFLAGS	+= -Iarch/$(ARCH)/boot/include
 
-BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd
+BOOT_TARGETS	= zImage zImage.initrd znetboot znetboot.initrd
 
 bootdir-y			:= simple
 bootdir-$(CONFIG_ALL_PPC)	:= openfirmware prep
-subdir-y			:= lib common images
-subdir-$(CONFIG_ALL_PPC)	+= of1275
+subdir-y			:= lib/ common/ images/
+subdir-$(CONFIG_ALL_PPC)	+= of1275/
 
 # for cleaning
 subdir-				+= simple/ openfirmware/ prep/
 
-tools-$(CONFIG_ALL_PPC)		:= addnote mknote hack-coff mkprep
-tools-$(CONFIG_PPLUS)		:= mkbugboot mkprep
-tools-$(CONFIG_4xx)		:= mktree
-tools-$(CONFIG_LOPEC)		:= mkbugboot mkprep
-tools-$(CONFIG_MCPN765)		:= mkbugboot mkprep
-tools-$(CONFIG_MENF1)		:= mkprep
-tools-$(CONFIG_MVME5100)	:= mkbugboot mkprep
-tools-$(CONFIG_PRPMC750)	:= mkbugboot mkprep
-tools-$(CONFIG_PRPMC800)	:= mkbugboot mkprep
-tools-$(CONFIG_SPRUCE)		:= mktree
-
-host-progs			:= $(addprefix utils/,$(tools-y))
+host-progs := $(addprefix utils/, addnote mknote hack-coff mkprep mkbugboot mktree)
 
 .PHONY: $(BOOT_TARGETS) $(bootdir-y)
 

arch/ppc/boot/images/Makefile

@@ -2,12 +2,14 @@
 # This dir holds all of the images for PPC machines.
 # Tom Rini	January 2001
 
-extra-y		:= vmlinux.gz
-GZIP_FLAGS	:= -v9f
+extra-y		:= vmlinux.bin vmlinux.gz
 
-$(obj)/vmlinux.gz: vmlinux
-	$(OBJCOPY) -O binary $< $(@:.gz=)
-	gzip $(GZIP_FLAGS) $(@:.gz=)
+OBJCOPYFLAGS_vmlinux.bin := -O binary
+$(obj)/vmlinux.bin: vmlinux FORCE
+	$(call if_changed,objcopy)
+
+$(obj)/vmlinux.gz: $(obj)/vmlinux.bin FORCE
+	$(call if_changed,gzip)
 
 # Files generated that shall be removed upon make clean
 clean-files	:= sImage vmapus vmlinux* miboot* zImage*

arch/ppc/boot/prep/Makefile

@@ -13,74 +13,96 @@
 # modified by Cort (cort@cs.nmt.edu)
 #
 
-boot: zImage
-
-TFTPIMAGE			= /tftpboot/zImage.prep
+TFTPIMAGE		:= /tftpboot/zImage.prep
 ifeq ($(CONFIG_SMP),y)
-TFTPIMAGE			= $(TFTPBOOT).smp
+TFTPIMAGE		:= $(TFTPBOOT).smp
 endif
 
-LD_ARGS				= -T $(boot)/ld.script -Ttext 0x00800000 -Bstatic
-OBJCOPY_ARGS			= -O elf32-powerpc
-LIBS 				= $(common)/lib.a $(bootlib)/lib.a
-
 boot-y				:= head.o misc.o
 boot-$(CONFIG_VGA_CONSOLE)	+= vreset.o kbd.o
 
-boot := arch/ppc/boot
-common := $(boot)/common
-utils := $(boot)/utils
-bootlib := $(boot)/lib
-of1275 := $(boot)/of1275
-images := $(boot)/images
-simple := $(boot)/simple
+boot	:= arch/ppc/boot
+common	:= $(boot)/common
+utils	:= $(boot)/utils
+bootlib	:= $(boot)/lib
+images	:= $(boot)/images
+simple	:= $(boot)/simple
 
-EXTRA_TARGETS	:= $(boot-y) ../simple/legacy.o
-OBJS		:= $(addprefix $(obj)/,$(boot-y)) $(simple)/legacy.o 
+OBJCOPYFLAGS	:= -O elf32-powerpc
+LIBS 		:= $(common)/lib.a $(bootlib)/lib.a
 
-# Tools
-MKPREP				:= $(utils)/mkprep
+targets		:= $(boot-y) dummy.o ../simple/legacy.o
+OBJS		:= $(addprefix $(obj)/,$(boot-y)) $(simple)/legacy.o 
 
 # Extra include search dirs
 CFLAGS_kbd.o			+= -Idrivers/char
 
+zImage: initrd := 
 zImage: $(images)/zImage.prep
+	@echo '  kernel: $@ is ready ($<)'
+
+zImage.initrd: initrd := .initrd
 zImage.initrd: $(images)/zImage.initrd.prep
+	@echo '  kernel: $@ is ready ($<)'
+
+$(images)/ramdisk.image.gz:
+	@echo '  MISSING $@'
+	@echo '          RAM disk image must be provided separatly'
+	@/bin/false
+
+OBJCOPYFLAGS_image.o   := \
+	--add-section=.image=$(images)/vmlinux.gz \
+	--set-section-flags=.image=contents,alloc,load,readonly,data
+targets	+= image.o
+$(obj)/image.o: $(obj)/dummy.o $(images)/vmlinux.gz
+	$(call if_changed,objcopy)
 
-$(obj)/dummy.o: $(common)/dummy.c
-	$(CC) -c -o $@ $(common)/dummy.c
-
-$(images)/zImage.prep: $(OBJS) $(LIBS) $(boot)/ld.script $(images)/vmlinux.gz \
-		$(obj)/dummy.o $(MKPREP)
-	$(OBJCOPY) $(OBJCOPY_ARGS) -R .comment \
-		--add-section=.image=$(images)/vmlinux.gz \
-		--set-section-flags=.image=contents,alloc,load,readonly,data \
-		$(obj)/dummy.o $(obj)/image.o
-	$(LD) $(LD_ARGS) -o $(obj)/zImage $(OBJS) $(obj)/image.o $(LIBS)
-	$(OBJCOPY) $(OBJCOPY_ARGS) $(obj)/zImage $(obj)/zImage \
-		-R .comment -R .stab -R .stabstr
-	$(MKPREP) -pbp $(obj)/zImage $@
-	rm -f $(obj)/zImage
-
-$(images)/zImage.initrd.prep: $(OBJS) $(LIBS) $(boot)/ld.script \
-		$(images)/vmlinux.gz $(obj)/dummy.o $(MKPREP)
-	$(OBJCOPY) $(OBJCOPY_ARGS) -R .comment \
-		--add-section=.ramdisk=$(images)/ramdisk.image.gz \
-		--set-section-flags=.ramdisk=contents,alloc,load,readonly,data \
-		--add-section=.image=$(images)/vmlinux.gz \
-		--set-section-flags=.image=contents,alloc,load,readonly,data \
-		$(obj)/dummy.o $(obj)/image.o
-	$(LD) $(LD_ARGS) -o $(obj)/zImage.initrd $(OBJS) $(obj)/image.o $(LIBS)
-	$(OBJCOPY) $(OBJCOPY_ARGS) $(obj)/zImage.initrd $(obj)/zImage.initrd \
-		-R .comment -R .stab -R .stabstr
-	$(MKPREP) -pbp $(obj)/zImage.initrd $@
-	rm -f  $(obj)/zImage.initrd
+OBJCOPYFLAGS_image.initrd.o    := \
+	--add-section=.ramdisk=$(images)/ramdisk.image.gz \
+	--set-section-flags=.ramdisk=contents,alloc,load,readonly,data \
+	--add-section=.image=$(images)/vmlinux.gz \
+	--set-section-flags=.image=contents,alloc,load,readonly,data
+targets	+= image.initrd.o
+$(obj)/image.initrd.o: $(obj)/dummy.o $(images)/vmlinux.gz $(images)/ramdisk.image.gz
+	$(call if_changed,objcopy)
 
+LDFLAGS_zImage.bin		:= -Ttext 0x00800000 -Bstatic -T
+LDFLAGS_zImage.initrd.bin	:= -Ttext 0x00800000 -Bstatic -T
+targets += zImage.bin
+$(obj)/zImage.bin: $(boot)/ld.script $(OBJS) $(obj)/image.o $(LIBS)
+	$(call if_changed,ld)
+targets += zImage.initrd.bin
+$(obj)/zImage.initrd.bin: $(boot)/ld.script $(OBJS) $(obj)/image.initrd.o $(LIBS)
+	$(call if_changed,ld)
+
+OBJCOPYFLAGS_zImage		:= -R .comment -R .stab -R .stabstr
+OBJCOPYFLAGS_zImage.initrd	:= -R .comment -R .stab -R .stabstr
+targets += zImage
+$(obj)/zImage: %: %.bin FORCE
+	$(call if_changed,objcopy)
+targets += zImage.initrd
+$(obj)/zImage.initrd: %: %.bin FORCE
+	$(call if_changed,objcopy)
+
+quiet_cmd_mkprep = MKPREP  $@
+      cmd_mkprep = $(utils)/mkprep -pbp $< $@
+
+$(images)/zImage.prep: $(obj)/zImage $(utils)/mkprep
+	$(call cmd,mkprep)
+$(images)/zImage.initrd.prep: $(obj)/zImage.initrd $(utils)/mkprep
+	$(call cmd,mkprep)
+
+#
+# Convinient shorthands for various targets
+#
 floppy: zImage
 	dd if=$(images)/zImage.prep of=/dev/fd0H1440 bs=64b
 
 znetboot : zImage
 	cp $(images)/zImage.prep $(TFTPIMAGE)
+	@echo '  kernel: $@ is ready ($<)'
 
 znetboot.initrd : zImage.initrd
 	cp $(images)/zImage.initrd.prep $(TFTPIMAGE)
+	@echo '  kernel: $@ is ready ($<)'
+

arch/ppc/boot/prep/dummy.c

+int main(void)
+{
+	return 0;
+}

arch/ppc/boot/simple/Makefile

@@ -160,8 +160,7 @@ MKBUGBOOT			:= $(utils)/mkbugboot
 MKPREP				:= $(utils)/mkprep
 MKTREE				:= $(utils)/mktree
 
-$(obj)/dummy.o: $(common)/dummy.c
-	$(CC) -c -o $@ $(common)/dummy.c
+targets := dummy.o
 
 $(obj)/zvmlinux: $(OBJS) $(LIBS) $(boot)/ld.script $(images)/vmlinux.gz \
 		$(obj)/dummy.o

arch/ppc/boot/simple/dummy.c

+int main(void)
+{
+	return 0;
+}

arch/ppc/boot/utils/Makefile

-#
-# arch/ppc/boot/utils/Makefile
-#
-# 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.
-
-HOSTCFLAGS += -I$(TOPDIR)/arch/$(ARCH)/boot/include
-
-all: FORCE
-
-# Simple programs with 1 file and no extra CFLAGS
-UTILS = addnote hack-coff mkprep mknote mkbugboot mktree \
-	addSystemMap addRamdDisk
-
-$(UTILS):
-	$(HOSTCC) $(HOSTCFLAGS) -o $@ $@.c
-
-clean:
-	rm -f $(UTILS)

arch/ppc/kernel/Makefile

@@ -10,12 +10,10 @@ EXTRA_AFLAGS		:= -Wa,-m405
 endif
 
 # Start off with 'head.o', change as needed.
-HEAD-y				:= head.o
-HEAD-$(CONFIG_40x)		:= head_4xx.o
-HEAD-$(CONFIG_8xx)		:= head_8xx.o
-HEAD-$(CONFIG_6xx)		+= idle_6xx.o
-
-extra-y	:= $(HEAD-y)
+extra-y				:= head.o
+extra-$(CONFIG_40x)		:= head_4xx.o
+extra-$(CONFIG_8xx)		:= head_8xx.o
+extra-$(CONFIG_6xx)		+= idle_6xx.o
 
 obj-y				:= entry.o traps.o irq.o idle.o time.o misc.o \
 					process.o signal.o ptrace.o align.o \

arch/ppc/kernel/misc.S

@@ -534,7 +534,7 @@ _GLOBAL(flush_instruction_cache)
 	isync
 	lis	r5, IDC_INVALL@h
 	mtspr	IC_CST, r5
-#elif defined(CONFIG_40x)
+#elif defined(CONFIG_4xx)
 #ifdef CONFIG_403GCX
 	li      r3, 512
 	mtctr   r3
@@ -1365,13 +1365,13 @@ _GLOBAL(sys_call_table)
 	.long sys_epoll_create
 	.long sys_epoll_ctl
 	.long sys_epoll_wait
- 	.long sys_remap_file_pages
- 	.long sys_timer_create	/* 240 */
- 	.long sys_timer_settime
- 	.long sys_timer_gettime
- 	.long sys_timer_getoverrun
- 	.long sys_timer_delete
- 	.long sys_clock_settime	/* 245 */
- 	.long sys_clock_gettime
- 	.long sys_clock_getres
- 	.long sys_clock_nanosleep
+	.long sys_remap_file_pages
+	.long sys_timer_create	/* 240 */
+	.long sys_timer_settime
+	.long sys_timer_gettime
+	.long sys_timer_getoverrun
+	.long sys_timer_delete
+	.long sys_clock_settime	/* 245 */
+	.long sys_clock_gettime
+	.long sys_clock_getres
+	.long sys_clock_nanosleep

arch/ppc/kernel/pci-dma.c

@@ -22,6 +22,7 @@ void *pci_alloc_consistent(struct pci_dev *hwdev, size_t size,
 
 	if (hwdev == NULL || hwdev->dma_mask != 0xffffffff)
 		gfp |= GFP_DMA;
+
 #ifdef CONFIG_NOT_COHERENT_CACHE
 	ret = consistent_alloc(gfp, size, dma_handle);
 #else
@@ -30,7 +31,9 @@ void *pci_alloc_consistent(struct pci_dev *hwdev, size_t size,
 
 	if (ret != NULL) {
 		memset(ret, 0, size);
+#ifndef CONFIG_NOT_COHERENT_CACHE
 		*dma_handle = virt_to_bus(ret);
+#endif
 	}
 	return ret;
 }

arch/ppc/kernel/smp.c

@@ -406,6 +406,7 @@ int __cpu_up(unsigned int cpu)
 	p = copy_process(CLONE_VM|CLONE_IDLETASK, 0, &regs, 0, NULL, NULL);
 	if (IS_ERR(p))
 		panic("failed fork for CPU %u: %li", cpu, PTR_ERR(p));
+	wake_up_forked_process(p);
 
 	init_idle(p, cpu);
 	unhash_process(p);

arch/ppc/mm/cachemap.c

@@ -2,7 +2,7 @@
  *  PowerPC version derived from arch/arm/mm/consistent.c
  *    Copyright (C) 2001 Dan Malek (dmalek@jlc.net)
  *
- *  arch/arm/mm/consistent.c
+ *  arch/ppc/mm/cachemap.c
  *
  *  Copyright (C) 2000 Russell King
  *
@@ -59,57 +59,69 @@ int map_page(unsigned long va, unsigned long pa, int flags);
  */
 void *consistent_alloc(int gfp, size_t size, dma_addr_t *dma_handle)
 {
-	int order, err, i;
-	unsigned long page, va, pa, flags;
-	struct vm_struct *area;
-	void	 *ret;
+	int order, err;
+	struct page *page, *free, *end;
+	unsigned long pa, flags, offset;
+	struct vm_struct *area = NULL;
+	unsigned long va = 0;
 
-	if (in_interrupt())
-		BUG();
+	BUG_ON(in_interrupt());
 
-	/* Only allocate page size areas.
-	*/
+	/* Only allocate page size areas */
 	size = PAGE_ALIGN(size);
 	order = get_order(size);
 
-	page = __get_free_pages(gfp, order);
-	if (!page) {
-		BUG();
+	free = page = alloc_pages(gfp, order);
+	if (! page)
 		return NULL;
-	}
+
+	pa = page_to_phys(page);
+	*dma_handle = page_to_bus(page);
+	end = page + (1 << order);
 
 	/*
 	 * we need to ensure that there are no cachelines in use,
 	 * or worse dirty in this area.
 	 */
-	invalidate_dcache_range(page, page + size);
+	invalidate_dcache_range((unsigned long)page_address(page),
+				(unsigned long)page_address(page) + size);
 
-	/* Allocate some common virtual space to map the new pages.
-	*/
+	/*
+	 * alloc_pages() expects the block to be handled as a unit, so
+	 * it only sets the page count on the first page.  We set the
+	 * counts on each page so they can be freed individually
+	 */
+	for (; page < end; page++)
+		set_page_count(page, 1);
+
+
+	/* Allocate some common virtual space to map the new pages*/
 	area = get_vm_area(size, VM_ALLOC);
-	if (area == 0) {
-		free_pages(page, order);
-		return NULL;
-	}
-	va = VMALLOC_VMADDR(area->addr);
-	ret = (void *)va;
+	if (! area)
+		goto out;
 
-	/* This gives us the real physical address of the first page.
-	*/
-	*dma_handle = pa = virt_to_bus((void *)page);
+	va = VMALLOC_VMADDR(area->addr);
 
 	flags = _PAGE_KERNEL | _PAGE_NO_CACHE;
-
-	err = 0;
-	for (i = 0; i < size && err == 0; i += PAGE_SIZE)
-		err = map_page(va+i, pa+i, flags);
 	
-	if (err) {
-		vfree((void *)va);
-		return NULL;
+	for (offset = 0; offset < size; offset += PAGE_SIZE) {
+		err = map_page(va+offset, pa+offset, flags);
+		if (err) {
+			vfree((void *)va);
+			va = 0;
+			goto out;
+		}
+
+		free++;
+	}
+
+ out:
+	/* Free pages which weren't mapped */
+	for (; free < end; free++) {
+		__free_page(free);
 	}
 
-	return ret;
+	return (void *)va;
 }
 
 /*
@@ -117,8 +129,7 @@ void *consistent_alloc(int gfp, size_t size, dma_addr_t *dma_handle)
  */
 void consistent_free(void *vaddr)
 {
-	if (in_interrupt())
-		BUG();
+	BUG_ON(in_interrupt());
 	vfree(vaddr);
 }
 
@@ -155,6 +166,6 @@ void consistent_sync_page(struct page *page, unsigned long offset,
 {
 	unsigned long start;
 
-	start = page_address(page) + offset;
+	start = (unsigned long)page_address(page) + offset;
 	consistent_sync((void *)start, size, direction);
 }

arch/ppc/ocp/Makefile

 #
 # Makefile for the linux kernel.
 #
-# Note! Dependencies are done automagically by 'make dep', which also
-# removes any old dependencies. DON'T put your own dependencies here
-# unless it's something special (ie not a .c file).
-#
-# Note 2! The CFLAGS definitions are now in the main makefile...
-#
-# NB: cribbed from the drivers/sbus/Makefile -- PMM
 
-obj-y   	+= ocp.o ocp-driver.o ocp-probe.o
+obj-y   	:= ocp.o ocp-driver.o ocp-probe.o
 

arch/ppc/syslib/open_pic.c

@@ -55,7 +55,7 @@ static void openpic_set_spurious(u_int vector);
 #ifdef CONFIG_SMP
 /* Interprocessor Interrupts */
 static void openpic_initipi(u_int ipi, u_int pri, u_int vector);
-static void openpic_ipi_action(int cpl, void *dev_id, struct pt_regs *regs);
+static irqreturn_t openpic_ipi_action(int cpl, void *dev_id, struct pt_regs *);
 #endif
 
 /* Timer Interrupts */

include/asm-ppc/highmem.h

@@ -54,8 +54,7 @@ extern void kunmap_high(struct page *page);
 
 static inline void *kmap(struct page *page)
 {
-	if (in_interrupt())
-		BUG();
+	might_sleep();
 	if (page < highmem_start_page)
 		return page_address(page);
 	return kmap_high(page);

include/asm-ppc/pci.h

@@ -102,6 +102,9 @@ static inline dma_addr_t pci_map_single(struct pci_dev *hwdev, void *ptr,
 {
 	if (direction == PCI_DMA_NONE)
 		BUG();
+
+	consistent_sync(ptr, size, direction);
+
 	return virt_to_bus(ptr);
 }
 
@@ -203,7 +206,8 @@ static inline void pci_dma_sync_single(struct pci_dev *hwdev,
 {
 	if (direction == PCI_DMA_NONE)
 		BUG();
-	/* nothing to do */
+
+	consistent_sync(bus_to_virt(dma_handle), size, direction);
 }
 
 /* Make physical memory consistent for a set of streaming

include/asm-ppc/pgtable.h

@@ -299,7 +299,8 @@ extern unsigned long ioremap_bot, ioremap_base;
 #define PAGE_COPY	__pgprot(_PAGE_BASE | _PAGE_USER)
 #define PAGE_COPY_X	__pgprot(_PAGE_BASE | _PAGE_USER | _PAGE_EXEC)
 
-#define PAGE_KERNEL	__pgprot(_PAGE_RAM)
+#define PAGE_KERNEL		__pgprot(_PAGE_RAM)
+#define PAGE_KERNEL_NOCACHE	__pgprot(_PAGE_IO)
 
 /*
  * The PowerPC can only do execute protection on a segment (256MB) basis,
@@ -515,7 +516,7 @@ extern void paging_init(void);
 
 /*
  * When flushing the tlb entry for a page, we also need to flush the hash
- * table entry.  flush_hash_page is assembler (for speed) in hashtable.S.
+ * table entry.  flush_hash_pages is assembler (for speed) in hashtable.S.
  */
 extern int flush_hash_pages(unsigned context, unsigned long va,
 			    unsigned long pmdval, int count);