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-rw-r--r--arch/powerpc/mm/mem_pieces.c163
1 files changed, 0 insertions, 163 deletions
diff --git a/arch/powerpc/mm/mem_pieces.c b/arch/powerpc/mm/mem_pieces.c
deleted file mode 100644
index 3d639052017..00000000000
--- a/arch/powerpc/mm/mem_pieces.c
+++ /dev/null
@@ -1,163 +0,0 @@
-/*
- * Copyright (c) 1996 Paul Mackerras <paulus@cs.anu.edu.au>
- * Changes to accommodate Power Macintoshes.
- * Cort Dougan <cort@cs.nmt.edu>
- * Rewrites.
- * Grant Erickson <grant@lcse.umn.edu>
- * General rework and split from mm/init.c.
- *
- * Module name: mem_pieces.c
- *
- * Description:
- * Routines and data structures for manipulating and representing
- * phyiscal memory extents (i.e. address/length pairs).
- *
- */
-
-#include <linux/config.h>
-#include <linux/kernel.h>
-#include <linux/stddef.h>
-#include <linux/init.h>
-#include <asm/page.h>
-
-#include "mem_pieces.h"
-
-extern struct mem_pieces phys_avail;
-
-static void mem_pieces_print(struct mem_pieces *);
-
-/*
- * Scan a region for a piece of a given size with the required alignment.
- */
-void __init *
-mem_pieces_find(unsigned int size, unsigned int align)
-{
- int i;
- unsigned a, e;
- struct mem_pieces *mp = &phys_avail;
-
- for (i = 0; i < mp->n_regions; ++i) {
- a = mp->regions[i].address;
- e = a + mp->regions[i].size;
- a = (a + align - 1) & -align;
- if (a + size <= e) {
- mem_pieces_remove(mp, a, size, 1);
- return (void *) __va(a);
- }
- }
- panic("Couldn't find %u bytes at %u alignment\n", size, align);
-
- return NULL;
-}
-
-/*
- * Remove some memory from an array of pieces
- */
-void __init
-mem_pieces_remove(struct mem_pieces *mp, unsigned int start, unsigned int size,
- int must_exist)
-{
- int i, j;
- unsigned int end, rs, re;
- struct reg_property *rp;
-
- end = start + size;
- for (i = 0, rp = mp->regions; i < mp->n_regions; ++i, ++rp) {
- if (end > rp->address && start < rp->address + rp->size)
- break;
- }
- if (i >= mp->n_regions) {
- if (must_exist)
- printk("mem_pieces_remove: [%x,%x) not in any region\n",
- start, end);
- return;
- }
- for (; i < mp->n_regions && end > rp->address; ++i, ++rp) {
- rs = rp->address;
- re = rs + rp->size;
- if (must_exist && (start < rs || end > re)) {
- printk("mem_pieces_remove: bad overlap [%x,%x) with",
- start, end);
- mem_pieces_print(mp);
- must_exist = 0;
- }
- if (start > rs) {
- rp->size = start - rs;
- if (end < re) {
- /* need to split this entry */
- if (mp->n_regions >= MEM_PIECES_MAX)
- panic("eek... mem_pieces overflow");
- for (j = mp->n_regions; j > i + 1; --j)
- mp->regions[j] = mp->regions[j-1];
- ++mp->n_regions;
- rp[1].address = end;
- rp[1].size = re - end;
- }
- } else {
- if (end < re) {
- rp->address = end;
- rp->size = re - end;
- } else {
- /* need to delete this entry */
- for (j = i; j < mp->n_regions - 1; ++j)
- mp->regions[j] = mp->regions[j+1];
- --mp->n_regions;
- --i;
- --rp;
- }
- }
- }
-}
-
-static void __init
-mem_pieces_print(struct mem_pieces *mp)
-{
- int i;
-
- for (i = 0; i < mp->n_regions; ++i)
- printk(" [%x, %x)", mp->regions[i].address,
- mp->regions[i].address + mp->regions[i].size);
- printk("\n");
-}
-
-void __init
-mem_pieces_sort(struct mem_pieces *mp)
-{
- unsigned long a, s;
- int i, j;
-
- for (i = 1; i < mp->n_regions; ++i) {
- a = mp->regions[i].address;
- s = mp->regions[i].size;
- for (j = i - 1; j >= 0; --j) {
- if (a >= mp->regions[j].address)
- break;
- mp->regions[j+1] = mp->regions[j];
- }
- mp->regions[j+1].address = a;
- mp->regions[j+1].size = s;
- }
-}
-
-void __init
-mem_pieces_coalesce(struct mem_pieces *mp)
-{
- unsigned long a, s, ns;
- int i, j, d;
-
- d = 0;
- for (i = 0; i < mp->n_regions; i = j) {
- a = mp->regions[i].address;
- s = mp->regions[i].size;
- for (j = i + 1; j < mp->n_regions
- && mp->regions[j].address - a <= s; ++j) {
- ns = mp->regions[j].address + mp->regions[j].size - a;
- if (ns > s)
- s = ns;
- }
- mp->regions[d].address = a;
- mp->regions[d].size = s;
- ++d;
- }
- mp->n_regions = d;
-}