aboutsummaryrefslogtreecommitdiff
path: root/arch/m32r/mm
diff options
context:
space:
mode:
Diffstat (limited to 'arch/m32r/mm')
-rw-r--r--arch/m32r/mm/cache.c1
-rw-r--r--arch/m32r/mm/discontig.c49
-rw-r--r--arch/m32r/mm/fault-nommu.c34
-rw-r--r--arch/m32r/mm/fault.c128
-rw-r--r--arch/m32r/mm/init.c138
-rw-r--r--arch/m32r/mm/ioremap.c93
-rw-r--r--arch/m32r/mm/mmu.S38
7 files changed, 110 insertions, 371 deletions
diff --git a/arch/m32r/mm/cache.c b/arch/m32r/mm/cache.c
index 9f54dd93701..fac75958487 100644
--- a/arch/m32r/mm/cache.c
+++ b/arch/m32r/mm/cache.c
@@ -4,7 +4,6 @@
* Copyright (C) 2002-2005 Hirokazu Takata, Hayato Fujiwara
*/
-#include <linux/config.h>
#include <asm/pgtable.h>
#undef MCCR
diff --git a/arch/m32r/mm/discontig.c b/arch/m32r/mm/discontig.c
index 08e72795555..27196303ce3 100644
--- a/arch/m32r/mm/discontig.c
+++ b/arch/m32r/mm/discontig.c
@@ -6,13 +6,13 @@
* Copyright (c) 2003 Hitoshi Yamamoto
*/
-#include <linux/config.h>
#include <linux/mm.h>
#include <linux/bootmem.h>
#include <linux/mmzone.h>
#include <linux/initrd.h>
#include <linux/nodemask.h>
#include <linux/module.h>
+#include <linux/pfn.h>
#include <asm/setup.h>
@@ -20,7 +20,6 @@ extern char _end[];
struct pglist_data *node_data[MAX_NUMNODES];
EXPORT_SYMBOL(node_data);
-static bootmem_data_t node_bdata[MAX_NUMNODES] __initdata;
pg_data_t m32r_node_data[MAX_NUMNODES];
@@ -33,6 +32,9 @@ typedef struct {
} mem_prof_t;
static mem_prof_t mem_prof[MAX_NUMNODES];
+extern unsigned long memory_start;
+extern unsigned long memory_end;
+
static void __init mem_prof_init(void)
{
unsigned long start_pfn, holes, free_pfn;
@@ -43,7 +45,7 @@ static void __init mem_prof_init(void)
/* Node#0 SDRAM */
mp = &mem_prof[0];
mp->start_pfn = PFN_UP(CONFIG_MEMORY_START);
- mp->pages = PFN_DOWN(CONFIG_MEMORY_SIZE);
+ mp->pages = PFN_DOWN(memory_end - memory_start);
mp->holes = 0;
mp->free_pfn = PFN_UP(__pa(_end));
@@ -81,7 +83,7 @@ unsigned long __init setup_memory(void)
for_each_online_node(nid) {
mp = &mem_prof[nid];
NODE_DATA(nid)=(pg_data_t *)&m32r_node_data[nid];
- NODE_DATA(nid)->bdata = &node_bdata[nid];
+ NODE_DATA(nid)->bdata = &bootmem_node_data[nid];
min_pfn = mp->start_pfn;
max_pfn = mp->start_pfn + mp->pages;
bootmap_size = init_bootmem_node(NODE_DATA(nid), mp->free_pfn,
@@ -91,7 +93,8 @@ unsigned long __init setup_memory(void)
PFN_PHYS(mp->pages));
reserve_bootmem_node(NODE_DATA(nid), PFN_PHYS(mp->start_pfn),
- PFN_PHYS(mp->free_pfn - mp->start_pfn) + bootmap_size);
+ PFN_PHYS(mp->free_pfn - mp->start_pfn) + bootmap_size,
+ BOOTMEM_DEFAULT);
if (max_low_pfn < max_pfn)
max_low_pfn = max_pfn;
@@ -104,18 +107,16 @@ unsigned long __init setup_memory(void)
if (LOADER_TYPE && INITRD_START) {
if (INITRD_START + INITRD_SIZE <= PFN_PHYS(max_low_pfn)) {
reserve_bootmem_node(NODE_DATA(0), INITRD_START,
- INITRD_SIZE);
- initrd_start = INITRD_START ?
- INITRD_START + PAGE_OFFSET : 0;
-
+ INITRD_SIZE, BOOTMEM_DEFAULT);
+ initrd_start = INITRD_START + PAGE_OFFSET;
initrd_end = initrd_start + INITRD_SIZE;
printk("initrd:start[%08lx],size[%08lx]\n",
initrd_start, INITRD_SIZE);
} else {
printk("initrd extends beyond end of memory "
- "(0x%08lx > 0x%08lx)\ndisabling initrd\n",
+ "(0x%08lx > 0x%08llx)\ndisabling initrd\n",
INITRD_START + INITRD_SIZE,
- PFN_PHYS(max_low_pfn));
+ (unsigned long long)PFN_PHYS(max_low_pfn));
initrd_start = 0;
}
@@ -125,24 +126,16 @@ unsigned long __init setup_memory(void)
return max_low_pfn;
}
-#define START_PFN(nid) \
- (NODE_DATA(nid)->bdata->node_boot_start >> PAGE_SHIFT)
+#define START_PFN(nid) (NODE_DATA(nid)->bdata->node_min_pfn)
#define MAX_LOW_PFN(nid) (NODE_DATA(nid)->bdata->node_low_pfn)
-unsigned long __init zone_sizes_init(void)
+void __init zone_sizes_init(void)
{
unsigned long zones_size[MAX_NR_ZONES], zholes_size[MAX_NR_ZONES];
unsigned long low, start_pfn;
- unsigned long holes = 0;
int nid, i;
mem_prof_t *mp;
- pgdat_list = NULL;
- for (nid = num_online_nodes() - 1 ; nid >= 0 ; nid--) {
- NODE_DATA(nid)->pgdat_next = pgdat_list;
- pgdat_list = NODE_DATA(nid);
- }
-
for_each_online_node(nid) {
mp = &mem_prof[nid];
for (i = 0 ; i < MAX_NR_ZONES ; i++) {
@@ -153,10 +146,9 @@ unsigned long __init zone_sizes_init(void)
low = MAX_LOW_PFN(nid);
zones_size[ZONE_DMA] = low - start_pfn;
zholes_size[ZONE_DMA] = mp->holes;
- holes += zholes_size[ZONE_DMA];
- free_area_init_node(nid, NODE_DATA(nid), zones_size,
- start_pfn, zholes_size);
+ node_set_state(nid, N_NORMAL_MEMORY);
+ free_area_init_node(nid, zones_size, start_pfn, zholes_size);
}
/*
@@ -164,10 +156,7 @@ unsigned long __init zone_sizes_init(void)
* Use all area of internal RAM.
* see __alloc_pages()
*/
- NODE_DATA(1)->node_zones->pages_min = 0;
- NODE_DATA(1)->node_zones->pages_low = 0;
- NODE_DATA(1)->node_zones->pages_high = 0;
-
- return holes;
+ NODE_DATA(1)->node_zones->watermark[WMARK_MIN] = 0;
+ NODE_DATA(1)->node_zones->watermark[WMARK_LOW] = 0;
+ NODE_DATA(1)->node_zones->watermark[WMARK_HIGH] = 0;
}
-
diff --git a/arch/m32r/mm/fault-nommu.c b/arch/m32r/mm/fault-nommu.c
index d9d488d782e..80f18cc6f54 100644
--- a/arch/m32r/mm/fault-nommu.c
+++ b/arch/m32r/mm/fault-nommu.c
@@ -7,9 +7,6 @@
* Copyright (C) 1995 Linus Torvalds
*/
-/* $Id: fault-nommu.c,v 1.1 2004/03/30 06:40:59 sakugawa Exp $ */
-
-#include <linux/config.h>
#include <linux/signal.h>
#include <linux/sched.h>
#include <linux/kernel.h>
@@ -20,13 +17,11 @@
#include <linux/mman.h>
#include <linux/mm.h>
#include <linux/smp.h>
-#include <linux/smp_lock.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/vt_kern.h> /* For unblank_screen() */
#include <asm/m32r.h>
-#include <asm/system.h>
#include <asm/uaccess.h>
#include <asm/pgalloc.h>
#include <asm/pgtable.h>
@@ -47,32 +42,6 @@ unsigned int tlb_entry_d_dat[NR_CPUS];
#define tlb_entry_d tlb_entry_d_dat[smp_processor_id()]
#endif
-/*
- * Unlock any spinlocks which will prevent us from getting the
- * message out
- */
-void bust_spinlocks(int yes)
-{
- int loglevel_save = console_loglevel;
-
- if (yes) {
- oops_in_progress = 1;
- return;
- }
-#ifdef CONFIG_VT
- unblank_screen();
-#endif
- oops_in_progress = 0;
- /*
- * OK, the message is on the console. Now we call printk()
- * without oops_in_progress set so that printk will give klogd
- * a poke. Hold onto your hats...
- */
- console_loglevel = 15; /* NMI oopser may have shut the console up */
- printk(" ");
- console_loglevel = loglevel_save;
-}
-
void do_BUG(const char *file, int line)
{
bust_spinlocks(1);
@@ -125,7 +94,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long error_code,
* update_mmu_cache()
*======================================================================*/
void update_mmu_cache(struct vm_area_struct *vma, unsigned long addr,
- pte_t pte)
+ pte_t *ptep)
{
BUG();
}
@@ -162,4 +131,3 @@ void local_flush_tlb_all(void)
{
BUG();
}
-
diff --git a/arch/m32r/mm/fault.c b/arch/m32r/mm/fault.c
index bf7fb58ef02..e9c6a8014bd 100644
--- a/arch/m32r/mm/fault.c
+++ b/arch/m32r/mm/fault.c
@@ -8,7 +8,6 @@
* Copyright (C) 1995 Linus Torvalds
*/
-#include <linux/config.h>
#include <linux/signal.h>
#include <linux/sched.h>
#include <linux/kernel.h>
@@ -19,7 +18,6 @@
#include <linux/mman.h>
#include <linux/mm.h>
#include <linux/smp.h>
-#include <linux/smp_lock.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/tty.h>
@@ -28,7 +26,6 @@
#include <linux/module.h>
#include <asm/m32r.h>
-#include <asm/system.h>
#include <asm/uaccess.h>
#include <asm/hardirq.h>
#include <asm/mmu_context.h>
@@ -50,32 +47,6 @@ unsigned int tlb_entry_d_dat[NR_CPUS];
extern void init_tlb(void);
-/*
- * Unlock any spinlocks which will prevent us from getting the
- * message out
- */
-void bust_spinlocks(int yes)
-{
- int loglevel_save = console_loglevel;
-
- if (yes) {
- oops_in_progress = 1;
- return;
- }
-#ifdef CONFIG_VT
- unblank_screen();
-#endif
- oops_in_progress = 0;
- /*
- * OK, the message is on the console. Now we call printk()
- * without oops_in_progress set so that printk will give klogd
- * a poke. Hold onto your hats...
- */
- console_loglevel = 15; /* NMI oopser may have shut the console up */
- printk(" ");
- console_loglevel = loglevel_save;
-}
-
/*======================================================================*
* do_page_fault()
*======================================================================*
@@ -107,7 +78,8 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long error_code,
struct mm_struct *mm;
struct vm_area_struct * vma;
unsigned long page, addr;
- int write;
+ unsigned long flags = 0;
+ int fault;
siginfo_t info;
/*
@@ -145,17 +117,20 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long error_code,
if (in_atomic() || !mm)
goto bad_area_nosemaphore;
+ if (error_code & ACE_USERMODE)
+ flags |= FAULT_FLAG_USER;
+
/* When running in the kernel we expect faults to occur only to
* addresses in user space. All other faults represent errors in the
- * kernel and should generate an OOPS. Unfortunatly, in the case of an
- * erroneous fault occuring in a code path which already holds mmap_sem
+ * kernel and should generate an OOPS. Unfortunately, in the case of an
+ * erroneous fault occurring in a code path which already holds mmap_sem
* we will deadlock attempting to validate the fault against the
* address space. Luckily the kernel only validly references user
* space from well defined areas of code, which are listed in the
* exceptions table.
*
* As the vast majority of faults will be valid we will only perform
- * the source reference check when there is a possibilty of a deadlock.
+ * the source reference check when there is a possibility of a deadlock.
* Attempt to lock the address space, if we cannot we then validate the
* source. If this is invalid we can skip the address space check,
* thus avoiding the deadlock.
@@ -174,7 +149,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long error_code,
goto good_area;
if (!(vma->vm_flags & VM_GROWSDOWN))
goto bad_area;
-#if 0
+
if (error_code & ACE_USERMODE) {
/*
* accessing the stack below "spu" is always a bug.
@@ -185,7 +160,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long error_code,
if (address + 4 < regs->spu)
goto bad_area;
}
-#endif
+
if (expand_stack(vma, address))
goto bad_area;
/*
@@ -194,14 +169,13 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long error_code,
*/
good_area:
info.si_code = SEGV_ACCERR;
- write = 0;
switch (error_code & (ACE_WRITE|ACE_PROTECTION)) {
default: /* 3: write, present */
/* fall through */
case ACE_WRITE: /* write, not present */
if (!(vma->vm_flags & VM_WRITE))
goto bad_area;
- write++;
+ flags |= FAULT_FLAG_WRITE;
break;
case ACE_PROTECTION: /* read, present */
case 0: /* read, not present */
@@ -215,7 +189,6 @@ good_area:
if ((error_code & ACE_INSTRUCTION) && !(vma->vm_flags & VM_EXEC))
goto bad_area;
-survive:
/*
* If for any reason at all we couldn't handle the fault,
* make sure we exit gracefully rather than endlessly redo
@@ -223,20 +196,18 @@ survive:
*/
addr = (address & PAGE_MASK);
set_thread_fault_code(error_code);
- switch (handle_mm_fault(mm, vma, addr, write)) {
- case VM_FAULT_MINOR:
- tsk->min_flt++;
- break;
- case VM_FAULT_MAJOR:
- tsk->maj_flt++;
- break;
- case VM_FAULT_SIGBUS:
- goto do_sigbus;
- case VM_FAULT_OOM:
+ fault = handle_mm_fault(mm, vma, addr, flags);
+ if (unlikely(fault & VM_FAULT_ERROR)) {
+ if (fault & VM_FAULT_OOM)
goto out_of_memory;
- default:
- BUG();
+ else if (fault & VM_FAULT_SIGBUS)
+ goto do_sigbus;
+ BUG();
}
+ if (fault & VM_FAULT_MAJOR)
+ tsk->maj_flt++;
+ else
+ tsk->min_flt++;
set_thread_fault_code(0);
up_read(&mm->mmap_sem);
return;
@@ -300,15 +271,10 @@ no_context:
*/
out_of_memory:
up_read(&mm->mmap_sem);
- if (tsk->pid == 1) {
- yield();
- down_read(&mm->mmap_sem);
- goto survive;
- }
- printk("VM: killing process %s\n", tsk->comm);
- if (error_code & ACE_USERMODE)
- do_exit(SIGKILL);
- goto no_context;
+ if (!(error_code & ACE_USERMODE))
+ goto no_context;
+ pagefault_out_of_memory();
+ return;
do_sigbus:
up_read(&mm->mmap_sem);
@@ -363,8 +329,10 @@ vmalloc_fault:
if (!pte_present(*pte_k))
goto no_context;
- addr = (address & PAGE_MASK) | (error_code & ACE_INSTRUCTION);
- update_mmu_cache(NULL, addr, *pte_k);
+ addr = (address & PAGE_MASK);
+ set_thread_fault_code(error_code);
+ update_mmu_cache(NULL, addr, pte_k);
+ set_thread_fault_code(0);
return;
}
}
@@ -376,9 +344,9 @@ vmalloc_fault:
#define ITLB_END (unsigned long *)(ITLB_BASE + (NR_TLB_ENTRIES * 8))
#define DTLB_END (unsigned long *)(DTLB_BASE + (NR_TLB_ENTRIES * 8))
void update_mmu_cache(struct vm_area_struct *vma, unsigned long vaddr,
- pte_t pte)
+ pte_t *ptep)
{
- unsigned long *entry1, *entry2;
+ volatile unsigned long *entry1, *entry2;
unsigned long pte_data, flags;
unsigned int *entry_dat;
int inst = get_thread_fault_code() & ACE_INSTRUCTION;
@@ -392,30 +360,26 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long vaddr,
vaddr = (vaddr & PAGE_MASK) | get_asid();
+ pte_data = pte_val(*ptep);
+
#ifdef CONFIG_CHIP_OPSP
entry1 = (unsigned long *)ITLB_BASE;
- for(i = 0 ; i < NR_TLB_ENTRIES; i++) {
- if(*entry1++ == vaddr) {
- pte_data = pte_val(pte);
- set_tlb_data(entry1, pte_data);
- break;
- }
- entry1++;
+ for (i = 0; i < NR_TLB_ENTRIES; i++) {
+ if (*entry1++ == vaddr) {
+ set_tlb_data(entry1, pte_data);
+ break;
+ }
+ entry1++;
}
entry2 = (unsigned long *)DTLB_BASE;
- for(i = 0 ; i < NR_TLB_ENTRIES ; i++) {
- if(*entry2++ == vaddr) {
- pte_data = pte_val(pte);
- set_tlb_data(entry2, pte_data);
- break;
- }
- entry2++;
+ for (i = 0; i < NR_TLB_ENTRIES; i++) {
+ if (*entry2++ == vaddr) {
+ set_tlb_data(entry2, pte_data);
+ break;
+ }
+ entry2++;
}
- local_irq_restore(flags);
- return;
#else
- pte_data = pte_val(pte);
-
/*
* Update TLB entries
* entry1: ITLB entry address
@@ -440,6 +404,7 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long vaddr,
"i" (MSVA_offset), "i" (MTOP_offset), "i" (MIDXI_offset)
: "r4", "memory"
);
+#endif
if ((!inst && entry2 >= DTLB_END) || (inst && entry1 >= ITLB_END))
goto notfound;
@@ -483,7 +448,6 @@ notfound:
set_tlb_data(entry1, pte_data);
goto found;
-#endif
}
/*======================================================================*
diff --git a/arch/m32r/mm/init.c b/arch/m32r/mm/init.c
index c9e7dad860b..0d4146f644d 100644
--- a/arch/m32r/mm/init.c
+++ b/arch/m32r/mm/init.c
@@ -18,6 +18,8 @@
#include <linux/highmem.h>
#include <linux/bitops.h>
#include <linux/nodemask.h>
+#include <linux/pfn.h>
+#include <linux/gfp.h>
#include <asm/types.h>
#include <asm/processor.h>
#include <asm/page.h>
@@ -26,51 +28,10 @@
#include <asm/mmu_context.h>
#include <asm/setup.h>
#include <asm/tlb.h>
-
-/* References to section boundaries */
-extern char _text, _etext, _edata;
-extern char __init_begin, __init_end;
+#include <asm/sections.h>
pgd_t swapper_pg_dir[1024];
-DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
-
-void show_mem(void)
-{
- int total = 0, reserved = 0;
- int shared = 0, cached = 0;
- int highmem = 0;
- struct page *page;
- pg_data_t *pgdat;
- unsigned long i;
-
- printk("Mem-info:\n");
- show_free_areas();
- printk("Free swap: %6ldkB\n",nr_swap_pages<<(PAGE_SHIFT-10));
- for_each_pgdat(pgdat) {
- unsigned long flags;
- pgdat_resize_lock(pgdat, &flags);
- for (i = 0; i < pgdat->node_spanned_pages; ++i) {
- page = pgdat_page_nr(pgdat, i);
- total++;
- if (PageHighMem(page))
- highmem++;
- if (PageReserved(page))
- reserved++;
- else if (PageSwapCache(page))
- cached++;
- else if (page_count(page))
- shared += page_count(page) - 1;
- }
- pgdat_resize_unlock(pgdat, &flags);
- }
- printk("%d pages of RAM\n", total);
- printk("%d pages of HIGHMEM\n",highmem);
- printk("%d reserved pages\n",reserved);
- printk("%d pages shared\n",shared);
- printk("%d pages swap cached\n",cached);
-}
-
/*
* Cache of MMU context last used.
*/
@@ -79,7 +40,6 @@ unsigned long mmu_context_cache_dat;
#else
unsigned long mmu_context_cache_dat[NR_CPUS];
#endif
-static unsigned long hole_pages;
/*
* function prototype
@@ -92,14 +52,13 @@ void free_initrd_mem(unsigned long, unsigned long);
#endif
/* It'd be good if these lines were in the standard header file. */
-#define START_PFN(nid) \
- (NODE_DATA(nid)->bdata->node_boot_start >> PAGE_SHIFT)
+#define START_PFN(nid) (NODE_DATA(nid)->bdata->node_min_pfn)
#define MAX_LOW_PFN(nid) (NODE_DATA(nid)->bdata->node_low_pfn)
#ifndef CONFIG_DISCONTIGMEM
-unsigned long __init zone_sizes_init(void)
+void __init zone_sizes_init(void)
{
- unsigned long zones_size[MAX_NR_ZONES] = {0, 0, 0};
+ unsigned long zones_size[MAX_NR_ZONES] = {0, };
unsigned long max_dma;
unsigned long low;
unsigned long start_pfn;
@@ -122,12 +81,10 @@ unsigned long __init zone_sizes_init(void)
start_pfn = __MEMORY_START >> PAGE_SHIFT;
#endif /* CONFIG_MMU */
- free_area_init_node(0, NODE_DATA(0), zones_size, start_pfn, 0);
-
- return 0;
+ free_area_init_node(0, zones_size, start_pfn, 0);
}
#else /* CONFIG_DISCONTIGMEM */
-extern unsigned long zone_sizes_init(void);
+extern void zone_sizes_init(void);
#endif /* CONFIG_DISCONTIGMEM */
/*======================================================================*
@@ -145,24 +102,7 @@ void __init paging_init(void)
for (i = 0 ; i < USER_PTRS_PER_PGD * 2 ; i++)
pgd_val(pg_dir[i]) = 0;
#endif /* CONFIG_MMU */
- hole_pages = zone_sizes_init();
-}
-
-int __init reservedpages_count(void)
-{
- int reservedpages, nid, i;
-
- reservedpages = 0;
- for_each_online_node(nid) {
- unsigned long flags;
- pgdat_resize_lock(NODE_DATA(nid), &flags);
- for (i = 0 ; i < MAX_LOW_PFN(nid) - START_PFN(nid) ; i++)
- if (PageReserved(nid_page_nr(nid, i)))
- reservedpages++;
- pgdat_resize_unlock(NODE_DATA(nid), &flags);
- }
-
- return reservedpages;
+ zone_sizes_init();
}
/*======================================================================*
@@ -171,48 +111,20 @@ int __init reservedpages_count(void)
*======================================================================*/
void __init mem_init(void)
{
- int codesize, reservedpages, datasize, initsize;
- int nid;
#ifndef CONFIG_MMU
extern unsigned long memory_end;
-#endif
- num_physpages = 0;
- for_each_online_node(nid)
- num_physpages += MAX_LOW_PFN(nid) - START_PFN(nid) + 1;
-
- num_physpages -= hole_pages;
-
-#ifndef CONFIG_DISCONTIGMEM
- max_mapnr = num_physpages;
-#endif /* CONFIG_DISCONTIGMEM */
-
-#ifdef CONFIG_MMU
- high_memory = (void *)__va(PFN_PHYS(MAX_LOW_PFN(0)));
-#else
high_memory = (void *)(memory_end & PAGE_MASK);
+#else
+ high_memory = (void *)__va(PFN_PHYS(MAX_LOW_PFN(0)));
#endif /* CONFIG_MMU */
/* clear the zero-page */
memset(empty_zero_page, 0, PAGE_SIZE);
- /* this will put all low memory onto the freelists */
- for_each_online_node(nid)
- totalram_pages += free_all_bootmem_node(NODE_DATA(nid));
-
- reservedpages = reservedpages_count() - hole_pages;
- codesize = (unsigned long) &_etext - (unsigned long)&_text;
- datasize = (unsigned long) &_edata - (unsigned long)&_etext;
- initsize = (unsigned long) &__init_end - (unsigned long)&__init_begin;
-
- printk(KERN_INFO "Memory: %luk/%luk available (%dk kernel code, "
- "%dk reserved, %dk data, %dk init)\n",
- (unsigned long) nr_free_pages() << (PAGE_SHIFT-10),
- num_physpages << (PAGE_SHIFT-10),
- codesize >> 10,
- reservedpages << (PAGE_SHIFT-10),
- datasize >> 10,
- initsize >> 10);
+ set_max_mapnr(get_num_physpages());
+ free_all_bootmem();
+ mem_init_print_info(NULL);
}
/*======================================================================*
@@ -221,17 +133,7 @@ void __init mem_init(void)
*======================================================================*/
void free_initmem(void)
{
- unsigned long addr;
-
- addr = (unsigned long)(&__init_begin);
- for (; addr < (unsigned long)(&__init_end); addr += PAGE_SIZE) {
- ClearPageReserved(virt_to_page(addr));
- init_page_count(virt_to_page(addr));
- free_page(addr);
- totalram_pages++;
- }
- printk (KERN_INFO "Freeing unused kernel memory: %dk freed\n", \
- (int)(&__init_end - &__init_begin) >> 10);
+ free_initmem_default(-1);
}
#ifdef CONFIG_BLK_DEV_INITRD
@@ -241,14 +143,6 @@ void free_initmem(void)
*======================================================================*/
void free_initrd_mem(unsigned long start, unsigned long end)
{
- unsigned long p;
- for (p = start; p < end; p += PAGE_SIZE) {
- ClearPageReserved(virt_to_page(p));
- init_page_count(virt_to_page(p));
- free_page(p);
- totalram_pages++;
- }
- printk (KERN_INFO "Freeing initrd memory: %ldk freed\n", (end - start) >> 10);
+ free_reserved_area((void *)start, (void *)end, -1, "initrd");
}
#endif
-
diff --git a/arch/m32r/mm/ioremap.c b/arch/m32r/mm/ioremap.c
index a151849a605..5152c4e6ac8 100644
--- a/arch/m32r/mm/ioremap.c
+++ b/arch/m32r/mm/ioremap.c
@@ -20,92 +20,8 @@
#include <asm/byteorder.h>
#include <linux/vmalloc.h>
-#include <asm/io.h>
+#include <linux/io.h>
#include <asm/pgalloc.h>
-#include <asm/cacheflush.h>
-#include <asm/tlbflush.h>
-
-static inline void
-remap_area_pte(pte_t * pte, unsigned long address, unsigned long size,
- unsigned long phys_addr, unsigned long flags)
-{
- unsigned long end;
- unsigned long pfn;
- pgprot_t pgprot = __pgprot(_PAGE_GLOBAL | _PAGE_PRESENT | _PAGE_READ
- | _PAGE_WRITE | flags);
-
- address &= ~PMD_MASK;
- end = address + size;
- if (end > PMD_SIZE)
- end = PMD_SIZE;
- if (address >= end)
- BUG();
- pfn = phys_addr >> PAGE_SHIFT;
- do {
- if (!pte_none(*pte)) {
- printk("remap_area_pte: page already exists\n");
- BUG();
- }
- set_pte(pte, pfn_pte(pfn, pgprot));
- address += PAGE_SIZE;
- pfn++;
- pte++;
- } while (address && (address < end));
-}
-
-static inline int
-remap_area_pmd(pmd_t * pmd, unsigned long address, unsigned long size,
- unsigned long phys_addr, unsigned long flags)
-{
- unsigned long end;
-
- address &= ~PGDIR_MASK;
- end = address + size;
- if (end > PGDIR_SIZE)
- end = PGDIR_SIZE;
- phys_addr -= address;
- if (address >= end)
- BUG();
- do {
- pte_t * pte = pte_alloc_kernel(pmd, address);
- if (!pte)
- return -ENOMEM;
- remap_area_pte(pte, address, end - address, address + phys_addr, flags);
- address = (address + PMD_SIZE) & PMD_MASK;
- pmd++;
- } while (address && (address < end));
- return 0;
-}
-
-static int
-remap_area_pages(unsigned long address, unsigned long phys_addr,
- unsigned long size, unsigned long flags)
-{
- int error;
- pgd_t * dir;
- unsigned long end = address + size;
-
- phys_addr -= address;
- dir = pgd_offset(&init_mm, address);
- flush_cache_all();
- if (address >= end)
- BUG();
- do {
- pmd_t *pmd;
- pmd = pmd_alloc(&init_mm, dir, address);
- error = -ENOMEM;
- if (!pmd)
- break;
- if (remap_area_pmd(pmd, address, end - address,
- phys_addr + address, flags))
- break;
- error = 0;
- address = (address + PGDIR_SIZE) & PGDIR_MASK;
- dir++;
- } while (address && (address < end));
- flush_tlb_all();
- return error;
-}
/*
* Generic mapping function (not visible outside):
@@ -129,6 +45,7 @@ __ioremap(unsigned long phys_addr, unsigned long size, unsigned long flags)
void __iomem * addr;
struct vm_struct * area;
unsigned long offset, last_addr;
+ pgprot_t pgprot;
/* Don't allow wraparound or zero size */
last_addr = phys_addr + size - 1;
@@ -157,6 +74,9 @@ __ioremap(unsigned long phys_addr, unsigned long size, unsigned long flags)
return NULL;
}
+ pgprot = __pgprot(_PAGE_GLOBAL | _PAGE_PRESENT | _PAGE_READ
+ | _PAGE_WRITE | flags);
+
/*
* Mappings have to be page-aligned
*/
@@ -172,7 +92,8 @@ __ioremap(unsigned long phys_addr, unsigned long size, unsigned long flags)
return NULL;
area->phys_addr = phys_addr;
addr = (void __iomem *) area->addr;
- if (remap_area_pages((unsigned long)addr, phys_addr, size, flags)) {
+ if (ioremap_page_range((unsigned long)addr, (unsigned long)addr + size,
+ phys_addr, pgprot)) {
vunmap((void __force *) addr);
return NULL;
}
diff --git a/arch/m32r/mm/mmu.S b/arch/m32r/mm/mmu.S
index 0c28f11d667..e9491a5ae82 100644
--- a/arch/m32r/mm/mmu.S
+++ b/arch/m32r/mm/mmu.S
@@ -4,9 +4,6 @@
* Copyright (C) 2001 by Hiroyuki Kondo
*/
-/* $Id: mmu.S,v 1.15 2004/03/16 02:56:27 takata Exp $ */
-
-#include <linux/config.h> /* CONFIG_MMU */
#include <linux/linkage.h>
#include <asm/assembler.h>
#include <asm/smp.h>
@@ -153,9 +150,13 @@ ENTRY(tme_handler)
; pmd = pmd_offset(pgd, address);
ld r3, @r3 ; r3: pmd data
- ldi r2, #-4096
beqz r3, 3f ; pmd_none(*pmd) ?
+ and3 r2, r3, #0xfff
+ add3 r2, r2, #-355 ; _KERNPG_TABLE(=0x163)
+ bnez r2, 3f ; pmd_bad(*pmd) ?
+ ldi r2, #-4096
+
; pte = pte_offset(pmd, address);
and r2, r3 ; r2: pte base addr
srl3 r3, r0, #10
@@ -166,7 +167,8 @@ ENTRY(tme_handler)
; pte_data = (unsigned long)pte_val(*pte);
ld r2, @r3 ; r2: pte data
- or3 r2, r2, #2 ; _PAGE_PRESENT(=2)
+ and3 r3, r2, #2 ; _PAGE_PRESENT(=2) check
+ beqz r3, 3f
.fillinsn
5:
@@ -265,13 +267,10 @@ ENTRY(tme_handler)
ld r1, @r3 ; r1: pmd
beqz r1, 3f ; pmd_none(*pmd) ?
;
- and3 r1, r1, #0xeff
- ldi r4, #611 ; _KERNPG_TABLE(=611)
- beq r1, r4, 4f ; !pmd_bad(*pmd) ?
- .fillinsn
-3:
- ldi r1, #0 ; r1: pte_data = 0
- bra 5f
+ and3 r1, r1, #0x3ff
+ ldi r4, #0x163 ; _KERNPG_TABLE(=0x163)
+ bne r1, r4, 3f ; pmd_bad(*pmd) ?
+
.fillinsn
4:
; pte = pte_offset(pmd, address);
@@ -285,8 +284,10 @@ ENTRY(tme_handler)
add r4, r3 ; r4: pte
; pte_data = (unsigned long)pte_val(*pte);
ld r1, @r4 ; r1: pte_data
- .fillinsn
+ and3 r3, r1, #2 ; _PAGE_PRESENT(=2) check
+ beqz r3, 3f
+ .fillinsn
;; set tlb
; r0: address, r1: pte_data, r2: entry
; r3,r4: (free)
@@ -298,8 +299,7 @@ ENTRY(tme_handler)
and3 r4, r4, #(MMU_CONTEXT_ASID_MASK)
or r3, r4
st r3, @r2
- or3 r4, r1, #2 ; _PAGE_PRESENT(=2)
- st r4, @(4,r2) ; set_tlb_data(entry, pte_data);
+ st r1, @(4,r2) ; set_tlb_data(entry, pte_data);
ld r4, @sp+
ld r3, @sp+
@@ -309,6 +309,11 @@ ENTRY(tme_handler)
ld sp, @sp+
rte
+ .fillinsn
+3:
+ ldi r1, #2 ; r1: pte_data = 0 | _PAGE_PRESENT(=2)
+ bra 5b
+
#else
#error unknown isa configuration
#endif
@@ -346,5 +351,4 @@ ENTRY(m32r_otlb_entrys)
#endif /* CONFIG_MMU */
-.end
-
+ .end
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-06 12:52:29 +0000