#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
+#include <linux/gfp.h>
#include <linux/types.h>
#include <linux/mm.h>
#include <linux/stddef.h>
#include <linux/pagemap.h>
#include <linux/suspend.h>
#include <linux/lmb.h>
+#include <linux/hugetlb.h>
#include <asm/pgalloc.h>
#include <asm/prom.h>
#include <asm/sparsemem.h>
#include <asm/vdso.h>
#include <asm/fixmap.h>
+#include <asm/swiotlb.h>
#include "mmu_decl.h"
int init_bootmem_done;
int mem_init_done;
-unsigned long memory_limit;
+phys_addr_t memory_limit;
#ifdef CONFIG_HIGHMEM
pte_t *kmap_pte;
int page_is_ram(unsigned long pfn)
{
- unsigned long paddr = (pfn << PAGE_SHIFT);
-
#ifndef CONFIG_PPC64 /* XXX for now */
- return paddr < __pa(high_memory);
+ return pfn < max_pfn;
#else
+ unsigned long paddr = (pfn << PAGE_SHIFT);
int i;
for (i=0; i < lmb.memory.cnt; i++) {
unsigned long base;
return ppc_md.phys_mem_access_prot(file, pfn, size, vma_prot);
if (!page_is_ram(pfn))
- vma_prot = __pgprot(pgprot_val(vma_prot)
- | _PAGE_GUARDED | _PAGE_NO_CACHE);
+ vma_prot = pgprot_noncached(vma_prot);
+
return vma_prot;
}
EXPORT_SYMBOL(phys_mem_access_prot);
/* this should work for most non-highmem platforms */
zone = pgdata->node_zones;
- return __add_pages(zone, start_pfn, nr_pages);
+ return __add_pages(nid, zone, start_pfn, nr_pages);
}
-
-#ifdef CONFIG_MEMORY_HOTREMOVE
-int remove_memory(u64 start, u64 size)
-{
- unsigned long start_pfn, end_pfn;
- int ret;
-
- start_pfn = start >> PAGE_SHIFT;
- end_pfn = start_pfn + (size >> PAGE_SHIFT);
- ret = offline_pages(start_pfn, end_pfn, 120 * HZ);
- if (ret)
- goto out;
- /* Arch-specific calls go here - next patch */
-out:
- return ret;
-}
-#endif /* CONFIG_MEMORY_HOTREMOVE */
#endif /* CONFIG_MEMORY_HOTPLUG */
/*
* memory regions, find holes and callback for contiguous regions.
*/
int
-walk_memory_resource(unsigned long start_pfn, unsigned long nr_pages, void *arg,
- int (*func)(unsigned long, unsigned long, void *))
+walk_system_ram_range(unsigned long start_pfn, unsigned long nr_pages,
+ void *arg, int (*func)(unsigned long, unsigned long, void *))
{
struct lmb_property res;
unsigned long pfn, len;
}
return ret;
}
-EXPORT_SYMBOL_GPL(walk_memory_resource);
-
-void show_mem(void)
-{
- unsigned long total = 0, reserved = 0;
- unsigned long shared = 0, cached = 0;
- unsigned long highmem = 0;
- struct page *page;
- pg_data_t *pgdat;
- unsigned long i;
-
- printk("Mem-info:\n");
- show_free_areas();
- for_each_online_pgdat(pgdat) {
- unsigned long flags;
- pgdat_resize_lock(pgdat, &flags);
- for (i = 0; i < pgdat->node_spanned_pages; i++) {
- if (!pfn_valid(pgdat->node_start_pfn + i))
- continue;
- 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("%ld pages of RAM\n", total);
-#ifdef CONFIG_HIGHMEM
- printk("%ld pages of HIGHMEM\n", highmem);
-#endif
- printk("%ld reserved pages\n", reserved);
- printk("%ld pages shared\n", shared);
- printk("%ld pages swap cached\n", cached);
-}
+EXPORT_SYMBOL_GPL(walk_system_ram_range);
/*
* Initialize the bootmem system and give it all the memory we
void __init paging_init(void)
{
unsigned long total_ram = lmb_phys_mem_size();
- unsigned long top_of_ram = lmb_end_of_DRAM();
+ phys_addr_t top_of_ram = lmb_end_of_DRAM();
unsigned long max_zone_pfns[MAX_NR_ZONES];
#ifdef CONFIG_PPC32
kmap_prot = PAGE_KERNEL;
#endif /* CONFIG_HIGHMEM */
- printk(KERN_DEBUG "Top of RAM: 0x%lx, Total RAM: 0x%lx\n",
- top_of_ram, total_ram);
+ printk(KERN_DEBUG "Top of RAM: 0x%llx, Total RAM: 0x%lx\n",
+ (unsigned long long)top_of_ram, total_ram);
printk(KERN_DEBUG "Memory hole size: %ldMB\n",
- (top_of_ram - total_ram) >> 20);
+ (long int)((top_of_ram - total_ram) >> 20));
memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
#ifdef CONFIG_HIGHMEM
max_zone_pfns[ZONE_DMA] = lowmem_end_addr >> PAGE_SHIFT;
struct page *page;
unsigned long reservedpages = 0, codesize, initsize, datasize, bsssize;
+#ifdef CONFIG_SWIOTLB
+ if (ppc_swiotlb_enable)
+ swiotlb_init(1);
+#endif
+
num_physpages = lmb.memory.size >> PAGE_SHIFT;
high_memory = (void *) __va(max_low_pfn * PAGE_SIZE);
printk(KERN_INFO "Memory: %luk/%luk available (%luk kernel code, "
"%luk reserved, %luk data, %luk bss, %luk init)\n",
- (unsigned long)nr_free_pages() << (PAGE_SHIFT-10),
+ nr_free_pages() << (PAGE_SHIFT-10),
num_physpages << (PAGE_SHIFT-10),
codesize >> 10,
reservedpages << (PAGE_SHIFT-10),
bsssize >> 10,
initsize >> 10);
+#ifdef CONFIG_PPC32
+ pr_info("Kernel virtual memory layout:\n");
+ pr_info(" * 0x%08lx..0x%08lx : fixmap\n", FIXADDR_START, FIXADDR_TOP);
+#ifdef CONFIG_HIGHMEM
+ pr_info(" * 0x%08lx..0x%08lx : highmem PTEs\n",
+ PKMAP_BASE, PKMAP_ADDR(LAST_PKMAP));
+#endif /* CONFIG_HIGHMEM */
+#ifdef CONFIG_NOT_COHERENT_CACHE
+ pr_info(" * 0x%08lx..0x%08lx : consistent mem\n",
+ IOREMAP_TOP, IOREMAP_TOP + CONFIG_CONSISTENT_SIZE);
+#endif /* CONFIG_NOT_COHERENT_CACHE */
+ pr_info(" * 0x%08lx..0x%08lx : early ioremap\n",
+ ioremap_bot, IOREMAP_TOP);
+ pr_info(" * 0x%08lx..0x%08lx : vmalloc & ioremap\n",
+ VMALLOC_START, VMALLOC_END);
+#endif /* CONFIG_PPC32 */
+
mem_init_done = 1;
}
void flush_dcache_icache_page(struct page *page)
{
+#ifdef CONFIG_HUGETLB_PAGE
+ if (PageCompound(page)) {
+ flush_dcache_icache_hugepage(page);
+ return;
+ }
+#endif
#ifdef CONFIG_BOOKE
- void *start = kmap_atomic(page, KM_PPC_SYNC_ICACHE);
- __flush_dcache_icache(start);
- kunmap_atomic(start, KM_PPC_SYNC_ICACHE);
+ {
+ void *start = kmap_atomic(page, KM_PPC_SYNC_ICACHE);
+ __flush_dcache_icache(start);
+ kunmap_atomic(start, KM_PPC_SYNC_ICACHE);
+ }
#elif defined(CONFIG_8xx) || defined(CONFIG_PPC64)
/* On 8xx there is no need to kmap since highmem is not supported */
__flush_dcache_icache(page_address(page));
#else
__flush_dcache_icache_phys(page_to_pfn(page) << PAGE_SHIFT);
#endif
-
}
+
void clear_user_page(void *page, unsigned long vaddr, struct page *pg)
{
clear_page(page);
* This must always be called with the pte lock held.
*/
void update_mmu_cache(struct vm_area_struct *vma, unsigned long address,
- pte_t pte)
+ pte_t *ptep)
{
#ifdef CONFIG_PPC_STD_MMU
unsigned long access = 0, trap;
-#endif
- unsigned long pfn = pte_pfn(pte);
-
- /* handle i-cache coherency */
- if (!cpu_has_feature(CPU_FTR_COHERENT_ICACHE) &&
- !cpu_has_feature(CPU_FTR_NOEXECUTE) &&
- pfn_valid(pfn)) {
- struct page *page = pfn_to_page(pfn);
-#ifdef CONFIG_8xx
- /* On 8xx, cache control instructions (particularly
- * "dcbst" from flush_dcache_icache) fault as write
- * operation if there is an unpopulated TLB entry
- * for the address in question. To workaround that,
- * we invalidate the TLB here, thus avoiding dcbst
- * misbehaviour.
- */
- _tlbie(address, 0 /* 8xx doesn't care about PID */);
-#endif
- /* The _PAGE_USER test should really be _PAGE_EXEC, but
- * older glibc versions execute some code from no-exec
- * pages, which for now we are supporting. If exec-only
- * pages are ever implemented, this will have to change.
- */
- if (!PageReserved(page) && (pte_val(pte) & _PAGE_USER)
- && !test_bit(PG_arch_1, &page->flags)) {
- if (vma->vm_mm == current->active_mm) {
- __flush_dcache_icache((void *) address);
- } else
- flush_dcache_icache_page(page);
- set_bit(PG_arch_1, &page->flags);
- }
- }
-#ifdef CONFIG_PPC_STD_MMU
/* We only want HPTEs for linux PTEs that have _PAGE_ACCESSED set */
- if (!pte_young(pte) || address >= TASK_SIZE)
+ if (!pte_young(*ptep) || address >= TASK_SIZE)
return;
/* We try to figure out if we are coming from an instruction
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff