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-rw-r--r--old/xenolinux-2.4.16-sparse/arch/xeno/mm/init.c293
1 files changed, 0 insertions, 293 deletions
diff --git a/old/xenolinux-2.4.16-sparse/arch/xeno/mm/init.c b/old/xenolinux-2.4.16-sparse/arch/xeno/mm/init.c
deleted file mode 100644
index 71b22ddcac..0000000000
--- a/old/xenolinux-2.4.16-sparse/arch/xeno/mm/init.c
+++ /dev/null
@@ -1,293 +0,0 @@
-/*
- * linux/arch/i386/mm/init.c
- *
- * Copyright (C) 1995 Linus Torvalds
- *
- * Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999
- */
-
-#include <linux/config.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/ptrace.h>
-#include <linux/mman.h>
-#include <linux/mm.h>
-#include <linux/swap.h>
-#include <linux/smp.h>
-#include <linux/init.h>
-#ifdef CONFIG_BLK_DEV_INITRD
-#include <linux/blk.h>
-#endif
-#include <linux/highmem.h>
-#include <linux/pagemap.h>
-#include <linux/bootmem.h>
-
-#include <asm/processor.h>
-#include <asm/system.h>
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
-#include <asm/pgalloc.h>
-#include <asm/dma.h>
-#include <asm/apic.h>
-#include <asm/tlb.h>
-
-mmu_gather_t mmu_gathers[NR_CPUS];
-unsigned long highstart_pfn, highend_pfn;
-static unsigned long totalram_pages;
-static unsigned long totalhigh_pages;
-
-int do_check_pgt_cache(int low, int high)
-{
- int freed = 0;
- if(pgtable_cache_size > high) {
- do {
- if (!QUICKLIST_EMPTY(pgd_quicklist)) {
- free_pgd_slow(get_pgd_fast());
- freed++;
- }
- if (!QUICKLIST_EMPTY(pte_quicklist)) {
- pte_free_slow(pte_alloc_one_fast(NULL, 0));
- freed++;
- }
- } while(pgtable_cache_size > low);
- }
- return freed;
-}
-
-void show_mem(void)
-{
- int i, total = 0, reserved = 0;
- int shared = 0, cached = 0;
- int highmem = 0;
-
- printk("Mem-info:\n");
- show_free_areas();
- printk("Free swap: %6dkB\n",nr_swap_pages<<(PAGE_SHIFT-10));
- i = max_mapnr;
- while (i-- > 0) {
- total++;
- if (PageHighMem(mem_map+i))
- highmem++;
- if (PageReserved(mem_map+i))
- reserved++;
- else if (PageSwapCache(mem_map+i))
- cached++;
- else if (page_count(mem_map+i))
- shared += page_count(mem_map+i) - 1;
- }
- 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);
- printk("%ld pages in page table cache\n",pgtable_cache_size);
- show_buffers();
-}
-
-/* References to section boundaries */
-
-extern char _text, _etext, _edata, __bss_start, _end;
-extern char __init_begin, __init_end;
-
-static inline void set_pte_phys (unsigned long vaddr,
- unsigned long phys, pgprot_t flags)
-{
- pgprot_t prot;
- pgd_t *pgd;
- pmd_t *pmd;
- pte_t *pte;
-
- pgd = init_mm.pgd + __pgd_offset(vaddr);
- if (pgd_none(*pgd)) {
- printk("PAE BUG #00!\n");
- return;
- }
- pmd = pmd_offset(pgd, vaddr);
- if (pmd_none(*pmd)) {
- printk("PAE BUG #01!\n");
- return;
- }
- pte = pte_offset(pmd, vaddr);
- if (pte_val(*pte))
- pte_ERROR(*pte);
- pgprot_val(prot) = pgprot_val(PAGE_KERNEL) | pgprot_val(flags);
-
- /* We queue directly, avoiding hidden phys->machine translation. */
- queue_l1_entry_update(__pa(pte), phys | pgprot_val(prot));
-
- /*
- * It's enough to flush this one mapping.
- * (PGE mappings get flushed as well)
- */
- __flush_tlb_one(vaddr);
-}
-
-void __set_fixmap (enum fixed_addresses idx, unsigned long phys,
- pgprot_t flags)
-{
- unsigned long address = __fix_to_virt(idx);
-
- if (idx >= __end_of_fixed_addresses) {
- printk("Invalid __set_fixmap\n");
- return;
- }
- set_pte_phys(address, phys, flags);
-}
-
-static void __init fixrange_init (unsigned long start,
- unsigned long end, pgd_t *pgd_base)
-{
- pgd_t *pgd, *kpgd;
- pmd_t *pmd, *kpmd;
- pte_t *pte, *kpte;
- int i, j;
- unsigned long vaddr;
-
- vaddr = start;
- i = __pgd_offset(vaddr);
- j = __pmd_offset(vaddr);
- pgd = pgd_base + i;
-
- for ( ; (i < PTRS_PER_PGD) && (vaddr != end); pgd++, i++) {
- pmd = (pmd_t *)pgd;
- for (; (j < PTRS_PER_PMD) && (vaddr != end); pmd++, j++) {
- if (pmd_none(*pmd)) {
- pte = (pte_t *) alloc_bootmem_low_pages(PAGE_SIZE);
- clear_page(pte);
- kpgd = pgd_offset_k((unsigned long)pte);
- kpmd = pmd_offset(kpgd, (unsigned long)pte);
- kpte = pte_offset(kpmd, (unsigned long)pte);
- queue_l1_entry_update(__pa(kpte),
- (*(unsigned long *)kpte)&~_PAGE_RW);
- set_pmd(pmd, __pmd(_KERNPG_TABLE + __pa(pte)));
- }
- vaddr += PMD_SIZE;
- }
- j = 0;
- }
-
- XENO_flush_page_update_queue();
-}
-
-void __init paging_init(void)
-{
- unsigned long zones_size[MAX_NR_ZONES] = {0, 0, 0};
- unsigned int max_dma, high, low;
- unsigned long vaddr;
-
- max_dma = virt_to_phys((char *)MAX_DMA_ADDRESS) >> PAGE_SHIFT;
- low = max_low_pfn;
- high = highend_pfn;
-
- if (low < max_dma)
- {
- zones_size[ZONE_DMA] = low;
- }
- else
- {
- zones_size[ZONE_DMA] = max_dma;
- zones_size[ZONE_NORMAL] = low - max_dma;
- }
- free_area_init(zones_size);
-
- /*
- * Fixed mappings, only the page table structure has to be created -
- * mappings will be set by set_fixmap():
- */
- vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK;
- fixrange_init(vaddr, HYPERVISOR_VIRT_START, init_mm.pgd);
-
- /*
- * XXX We do this conversion early, so that all other page tables
- * will automatically get this mapping.
- */
- set_fixmap(FIX_BLKRING_BASE, start_info.blk_ring);
-}
-
-
-static inline int page_is_ram (unsigned long pagenr)
-{
- return 1;
-}
-
-void __init mem_init(void)
-{
- int codesize, reservedpages, datasize, initsize;
- int tmp;
-
- max_mapnr = num_physpages = max_low_pfn;
- high_memory = (void *) __va(max_low_pfn * PAGE_SIZE);
-
- /* clear the zero-page */
- memset(empty_zero_page, 0, PAGE_SIZE);
-
- /* this will put all low memory onto the freelists */
- totalram_pages += free_all_bootmem();
-
- reservedpages = 0;
- for (tmp = 0; tmp < max_low_pfn; tmp++)
- /*
- * Only count reserved RAM pages
- */
- if (page_is_ram(tmp) && PageReserved(mem_map+tmp))
- reservedpages++;
- codesize = (unsigned long) &_etext - (unsigned long) &_text;
- datasize = (unsigned long) &_edata - (unsigned long) &_etext;
- initsize = (unsigned long) &__init_end - (unsigned long) &__init_begin;
-
- printk("Memory: %luk/%luk available (%dk kernel code, %dk reserved, %dk data, %dk init, %ldk highmem)\n",
- (unsigned long) nr_free_pages() << (PAGE_SHIFT-10),
- max_mapnr << (PAGE_SHIFT-10),
- codesize >> 10,
- reservedpages << (PAGE_SHIFT-10),
- datasize >> 10,
- initsize >> 10,
- (unsigned long) (totalhigh_pages << (PAGE_SHIFT-10))
- );
-
- boot_cpu_data.wp_works_ok = 1;
-}
-
-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));
- set_page_count(virt_to_page(addr), 1);
- free_page(addr);
- totalram_pages++;
- }
- printk ("Freeing unused kernel memory: %dk freed\n", (&__init_end - &__init_begin) >> 10);
-}
-
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
- if (start < end)
- printk ("Freeing initrd memory: %ldk freed\n", (end - start) >> 10);
- for (; start < end; start += PAGE_SIZE) {
- ClearPageReserved(virt_to_page(start));
- set_page_count(virt_to_page(start), 1);
- free_page(start);
- totalram_pages++;
- }
-}
-#endif
-
-void si_meminfo(struct sysinfo *val)
-{
- val->totalram = totalram_pages;
- val->sharedram = 0;
- val->freeram = nr_free_pages();
- val->bufferram = atomic_read(&buffermem_pages);
- val->totalhigh = totalhigh_pages;
- val->freehigh = nr_free_highpages();
- val->mem_unit = PAGE_SIZE;
- return;
-}
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