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-rw-r--r--arch/arm/common/dmabounce.c18
-rw-r--r--arch/arm/common/sa1111.c13
-rw-r--r--arch/arm/kernel/setup.c25
-rw-r--r--arch/arm/kernel/signal.c29
-rw-r--r--arch/arm/kernel/signal.h12
-rw-r--r--arch/arm/kernel/traps.c9
-rw-r--r--arch/arm/mach-clps7500/core.c2
-rw-r--r--arch/arm/mach-rpc/riscpc.c7
-rw-r--r--arch/arm/mm/init.c19
-rw-r--r--include/asm-arm/pgalloc.h24
10 files changed, 86 insertions, 72 deletions
diff --git a/arch/arm/common/dmabounce.c b/arch/arm/common/dmabounce.c
index 9d63a01214e..cbf2165476b 100644
--- a/arch/arm/common/dmabounce.c
+++ b/arch/arm/common/dmabounce.c
@@ -93,15 +93,12 @@ static void print_alloc_stats(struct dmabounce_device_info *device_info)
static inline struct dmabounce_device_info *
find_dmabounce_dev(struct device *dev)
{
- struct list_head *entry;
-
- list_for_each(entry, &dmabounce_devs) {
- struct dmabounce_device_info *d =
- list_entry(entry, struct dmabounce_device_info, node);
+ struct dmabounce_device_info *d;
+ list_for_each_entry(d, &dmabounce_devs, node)
if (d->dev == dev)
return d;
- }
+
return NULL;
}
@@ -172,15 +169,11 @@ alloc_safe_buffer(struct dmabounce_device_info *device_info, void *ptr,
static inline struct safe_buffer *
find_safe_buffer(struct dmabounce_device_info *device_info, dma_addr_t safe_dma_addr)
{
- struct list_head *entry;
-
- list_for_each(entry, &device_info->safe_buffers) {
- struct safe_buffer *b =
- list_entry(entry, struct safe_buffer, node);
+ struct safe_buffer *b;
+ list_for_each_entry(b, &device_info->safe_buffers, node)
if (b->safe_dma_addr == safe_dma_addr)
return b;
- }
return NULL;
}
@@ -301,7 +294,6 @@ unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
__func__, buf->ptr, (void *) virt_to_dma(dev, buf->ptr),
buf->safe, (void *) buf->safe_dma_addr);
-
DO_STATS ( device_info->bounce_count++ );
if (dir == DMA_FROM_DEVICE || dir == DMA_BIDIRECTIONAL) {
diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c
index 21fce3414ed..38c2eb667eb 100644
--- a/arch/arm/common/sa1111.c
+++ b/arch/arm/common/sa1111.c
@@ -721,16 +721,17 @@ __sa1111_probe(struct device *me, struct resource *mem, int irq)
return ret;
}
+static int sa1111_remove_one(struct device *dev, void *data)
+{
+ device_unregister(dev);
+ return 0;
+}
+
static void __sa1111_remove(struct sa1111 *sachip)
{
- struct list_head *l, *n;
void __iomem *irqbase = sachip->base + SA1111_INTC;
- list_for_each_safe(l, n, &sachip->dev->children) {
- struct device *d = list_to_dev(l);
-
- device_unregister(d);
- }
+ device_for_each_child(sachip->dev, NULL, sa1111_remove_one);
/* disable all IRQs */
sa1111_writel(0, irqbase + SA1111_INTEN0);
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 9fed5fa194d..8cf733daa80 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -395,6 +395,20 @@ static void __init early_initrd(char **p)
}
__early_param("initrd=", early_initrd);
+static void __init add_memory(unsigned long start, unsigned long size)
+{
+ /*
+ * Ensure that start/size are aligned to a page boundary.
+ * Size is appropriately rounded down, start is rounded up.
+ */
+ size -= start & ~PAGE_MASK;
+
+ meminfo.bank[meminfo.nr_banks].start = PAGE_ALIGN(start);
+ meminfo.bank[meminfo.nr_banks].size = size & PAGE_MASK;
+ meminfo.bank[meminfo.nr_banks].node = PHYS_TO_NID(start);
+ meminfo.nr_banks += 1;
+}
+
/*
* Pick out the memory size. We look for mem=size@start,
* where start and size are "size[KkMm]"
@@ -419,10 +433,7 @@ static void __init early_mem(char **p)
if (**p == '@')
start = memparse(*p + 1, p);
- meminfo.bank[meminfo.nr_banks].start = start;
- meminfo.bank[meminfo.nr_banks].size = size;
- meminfo.bank[meminfo.nr_banks].node = PHYS_TO_NID(start);
- meminfo.nr_banks += 1;
+ add_memory(start, size);
}
__early_param("mem=", early_mem);
@@ -564,11 +575,7 @@ static int __init parse_tag_mem32(const struct tag *tag)
tag->u.mem.start, tag->u.mem.size / 1024);
return -EINVAL;
}
- meminfo.bank[meminfo.nr_banks].start = tag->u.mem.start;
- meminfo.bank[meminfo.nr_banks].size = tag->u.mem.size;
- meminfo.bank[meminfo.nr_banks].node = PHYS_TO_NID(tag->u.mem.start);
- meminfo.nr_banks += 1;
-
+ add_memory(tag->u.mem.start, tag->u.mem.size);
return 0;
}
diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index 931919fd512..07ddeed6176 100644
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -19,6 +19,7 @@
#include <asm/unistd.h>
#include "ptrace.h"
+#include "signal.h"
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
@@ -35,7 +36,7 @@
#define SWI_THUMB_SIGRETURN (0xdf00 << 16 | 0x2700 | (__NR_sigreturn - __NR_SYSCALL_BASE))
#define SWI_THUMB_RT_SIGRETURN (0xdf00 << 16 | 0x2700 | (__NR_rt_sigreturn - __NR_SYSCALL_BASE))
-static const unsigned long retcodes[4] = {
+const unsigned long sigreturn_codes[4] = {
SWI_SYS_SIGRETURN, SWI_THUMB_SIGRETURN,
SWI_SYS_RT_SIGRETURN, SWI_THUMB_RT_SIGRETURN
};
@@ -500,17 +501,25 @@ setup_return(struct pt_regs *regs, struct k_sigaction *ka,
if (ka->sa.sa_flags & SA_SIGINFO)
idx += 2;
- if (__put_user(retcodes[idx], rc))
+ if (__put_user(sigreturn_codes[idx], rc))
return 1;
- /*
- * Ensure that the instruction cache sees
- * the return code written onto the stack.
- */
- flush_icache_range((unsigned long)rc,
- (unsigned long)(rc + 1));
-
- retcode = ((unsigned long)rc) + thumb;
+ if (cpsr & MODE32_BIT) {
+ /*
+ * 32-bit code can use the new high-page
+ * signal return code support.
+ */
+ retcode = KERN_SIGRETURN_CODE + (idx << 2) + thumb;
+ } else {
+ /*
+ * Ensure that the instruction cache sees
+ * the return code written onto the stack.
+ */
+ flush_icache_range((unsigned long)rc,
+ (unsigned long)(rc + 1));
+
+ retcode = ((unsigned long)rc) + thumb;
+ }
}
regs->ARM_r0 = usig;
diff --git a/arch/arm/kernel/signal.h b/arch/arm/kernel/signal.h
new file mode 100644
index 00000000000..91d26faca62
--- /dev/null
+++ b/arch/arm/kernel/signal.h
@@ -0,0 +1,12 @@
+/*
+ * linux/arch/arm/kernel/signal.h
+ *
+ * Copyright (C) 2005 Russell King.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#define KERN_SIGRETURN_CODE 0xffff0500
+
+extern const unsigned long sigreturn_codes[4];
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 45d2a032d89..2fb0a4cfb37 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -30,6 +30,7 @@
#include <asm/traps.h>
#include "ptrace.h"
+#include "signal.h"
const char *processor_modes[]=
{ "USER_26", "FIQ_26" , "IRQ_26" , "SVC_26" , "UK4_26" , "UK5_26" , "UK6_26" , "UK7_26" ,
@@ -683,6 +684,14 @@ void __init trap_init(void)
memcpy((void *)0xffff0000, __vectors_start, __vectors_end - __vectors_start);
memcpy((void *)0xffff0200, __stubs_start, __stubs_end - __stubs_start);
memcpy((void *)0xffff1000 - kuser_sz, __kuser_helper_start, kuser_sz);
+
+ /*
+ * Copy signal return handlers into the vector page, and
+ * set sigreturn to be a pointer to these.
+ */
+ memcpy((void *)KERN_SIGRETURN_CODE, sigreturn_codes,
+ sizeof(sigreturn_codes));
+
flush_icache_range(0xffff0000, 0xffff0000 + PAGE_SIZE);
modify_domain(DOMAIN_USER, DOMAIN_CLIENT);
}
diff --git a/arch/arm/mach-clps7500/core.c b/arch/arm/mach-clps7500/core.c
index fdfededfd96..0bc7da48861 100644
--- a/arch/arm/mach-clps7500/core.c
+++ b/arch/arm/mach-clps7500/core.c
@@ -26,6 +26,8 @@
#include <asm/irq.h>
#include <asm/mach-types.h>
+unsigned int vram_size;
+
static void cl7500_ack_irq_a(unsigned int irq)
{
unsigned int val, mask;
diff --git a/arch/arm/mach-rpc/riscpc.c b/arch/arm/mach-rpc/riscpc.c
index 815c53225cd..43710688143 100644
--- a/arch/arm/mach-rpc/riscpc.c
+++ b/arch/arm/mach-rpc/riscpc.c
@@ -32,10 +32,7 @@
extern void rpc_init_irq(void);
-extern unsigned int vram_size;
-
-#if 0
-
+unsigned int vram_size;
unsigned int memc_ctrl_reg;
unsigned int number_mfm_drives;
@@ -63,8 +60,6 @@ static int __init parse_tag_acorn(const struct tag *tag)
__tagtable(ATAG_ACORN, parse_tag_acorn);
-#endif
-
static struct map_desc rpc_io_desc[] __initdata = {
{ SCREEN_BASE, SCREEN_START, 2*1048576, MT_DEVICE }, /* VRAM */
{ (u32)IO_BASE, IO_START, IO_SIZE , MT_DEVICE }, /* IO space */
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 72a2b8cee31..c08710b1ff0 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -93,14 +93,7 @@ struct node_info {
};
#define O_PFN_DOWN(x) ((x) >> PAGE_SHIFT)
-#define V_PFN_DOWN(x) O_PFN_DOWN(__pa(x))
-
#define O_PFN_UP(x) (PAGE_ALIGN(x) >> PAGE_SHIFT)
-#define V_PFN_UP(x) O_PFN_UP(__pa(x))
-
-#define PFN_SIZE(x) ((x) >> PAGE_SHIFT)
-#define PFN_RANGE(s,e) PFN_SIZE(PAGE_ALIGN((unsigned long)(e)) - \
- (((unsigned long)(s)) & PAGE_MASK))
/*
* FIXME: We really want to avoid allocating the bootmap bitmap
@@ -113,7 +106,7 @@ find_bootmap_pfn(int node, struct meminfo *mi, unsigned int bootmap_pages)
{
unsigned int start_pfn, bank, bootmap_pfn;
- start_pfn = V_PFN_UP(&_end);
+ start_pfn = O_PFN_UP(__pa(&_end));
bootmap_pfn = 0;
for (bank = 0; bank < mi->nr_banks; bank ++) {
@@ -122,9 +115,9 @@ find_bootmap_pfn(int node, struct meminfo *mi, unsigned int bootmap_pages)
if (mi->bank[bank].node != node)
continue;
- start = O_PFN_UP(mi->bank[bank].start);
- end = O_PFN_DOWN(mi->bank[bank].size +
- mi->bank[bank].start);
+ start = mi->bank[bank].start >> PAGE_SHIFT;
+ end = (mi->bank[bank].size +
+ mi->bank[bank].start) >> PAGE_SHIFT;
if (end < start_pfn)
continue;
@@ -191,8 +184,8 @@ find_memend_and_nodes(struct meminfo *mi, struct node_info *np)
/*
* Get the start and end pfns for this bank
*/
- start = O_PFN_UP(mi->bank[i].start);
- end = O_PFN_DOWN(mi->bank[i].start + mi->bank[i].size);
+ start = mi->bank[i].start >> PAGE_SHIFT;
+ end = (mi->bank[i].start + mi->bank[i].size) >> PAGE_SHIFT;
if (np[node].start > start)
np[node].start = start;
diff --git a/include/asm-arm/pgalloc.h b/include/asm-arm/pgalloc.h
index e814f8144f8..bc18ff40518 100644
--- a/include/asm-arm/pgalloc.h
+++ b/include/asm-arm/pgalloc.h
@@ -89,6 +89,13 @@ static inline void pte_free(struct page *pte)
__free_page(pte);
}
+static inline void __pmd_populate(pmd_t *pmdp, unsigned long pmdval)
+{
+ pmdp[0] = __pmd(pmdval);
+ pmdp[1] = __pmd(pmdval + 256 * sizeof(pte_t));
+ flush_pmd_entry(pmdp);
+}
+
/*
* Populate the pmdp entry with a pointer to the pte. This pmd is part
* of the mm address space.
@@ -99,32 +106,19 @@ static inline void
pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp, pte_t *ptep)
{
unsigned long pte_ptr = (unsigned long)ptep;
- unsigned long pmdval;
-
- BUG_ON(mm != &init_mm);
/*
* The pmd must be loaded with the physical
* address of the PTE table
*/
pte_ptr -= PTRS_PER_PTE * sizeof(void *);
- pmdval = __pa(pte_ptr) | _PAGE_KERNEL_TABLE;
- pmdp[0] = __pmd(pmdval);
- pmdp[1] = __pmd(pmdval + 256 * sizeof(pte_t));
- flush_pmd_entry(pmdp);
+ __pmd_populate(pmdp, __pa(pte_ptr) | _PAGE_KERNEL_TABLE);
}
static inline void
pmd_populate(struct mm_struct *mm, pmd_t *pmdp, struct page *ptep)
{
- unsigned long pmdval;
-
- BUG_ON(mm == &init_mm);
-
- pmdval = page_to_pfn(ptep) << PAGE_SHIFT | _PAGE_USER_TABLE;
- pmdp[0] = __pmd(pmdval);
- pmdp[1] = __pmd(pmdval + 256 * sizeof(pte_t));
- flush_pmd_entry(pmdp);
+ __pmd_populate(pmdp, page_to_pfn(ptep) << PAGE_SHIFT | _PAGE_USER_TABLE);
}
#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 04:44:03 +0000