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Simplify x86_add_cluster.

This commit is contained in:
maxv 2016-07-17 10:46:43 +00:00
parent b380080ebc
commit 0d774014e0
1 changed files with 22 additions and 31 deletions
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53
sys/arch/x86/x86/x86_machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: x86_machdep.c,v 1.73 2016/07/16 17:13:25 maxv Exp $ */
/* $NetBSD: x86_machdep.c,v 1.74 2016/07/17 10:46:43 maxv Exp $ */
/*-
* Copyright (c) 2002, 2006, 2007 YAMAMOTO Takashi,
@ -31,7 +31,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: x86_machdep.c,v 1.73 2016/07/16 17:13:25 maxv Exp $");
__KERNEL_RCSID(0, "$NetBSD: x86_machdep.c,v 1.74 2016/07/17 10:46:43 maxv Exp $");
#include "opt_modular.h"
#include "opt_physmem.h"
@ -501,8 +501,7 @@ x86_select_freelist(uint64_t maxaddr)
}
static int
x86_add_cluster(phys_ram_seg_t *seg_clusters, int seg_cluster_cnt,
struct extent *iomem_ex, uint64_t seg_start, uint64_t seg_end,
x86_add_cluster(struct extent *iomem_ex, uint64_t seg_start, uint64_t seg_end,
uint32_t type)
{
uint64_t new_physmem = 0;
@ -523,7 +522,7 @@ x86_add_cluster(phys_ram_seg_t *seg_clusters, int seg_cluster_cnt,
aprint_verbose("WARNING: skipping large memory map entry: "
"0x%"PRIx64"/0x%"PRIx64"/0x%x\n",
seg_start, (seg_end - seg_start), type);
return seg_cluster_cnt;
return 0;
}
/*
@ -533,16 +532,16 @@ x86_add_cluster(phys_ram_seg_t *seg_clusters, int seg_cluster_cnt,
seg_end -= PAGE_SIZE;
if (seg_end <= seg_start)
return seg_cluster_cnt;
return 0;
for (i = 0; i < seg_cluster_cnt; i++) {
cluster = &seg_clusters[i];
for (i = 0; i < mem_cluster_cnt; i++) {
cluster = &mem_clusters[i];
if ((cluster->start == round_page(seg_start)) &&
(cluster->size == trunc_page(seg_end) - cluster->start)) {
#ifdef DEBUG_MEMLOAD
printf("WARNING: skipping duplicate segment entry\n");
#endif
return seg_cluster_cnt;
return 0;
}
}
@ -566,24 +565,22 @@ x86_add_cluster(phys_ram_seg_t *seg_clusters, int seg_cluster_cnt,
"(0x%"PRIx64"/0x%"PRIx64"/0x%x) FROM "
"IOMEM EXTENT MAP!\n",
seg_start, seg_end - seg_start, type);
return seg_cluster_cnt;
return 0;
}
}
/*
* If it's not free memory, skip it.
*/
/* If it's not free memory, skip it. */
if (type != BIM_Memory)
return seg_cluster_cnt;
return 0;
/* XXX XXX XXX */
if (seg_cluster_cnt >= VM_PHYSSEG_MAX)
if (mem_cluster_cnt >= VM_PHYSSEG_MAX) {
panic("%s: too many memory segments (increase VM_PHYSSEG_MAX)",
__func__);
}
#ifdef PHYSMEM_MAX_ADDR
if (seg_start >= MBTOB(PHYSMEM_MAX_ADDR))
return seg_cluster_cnt;
return 0;
if (seg_end > MBTOB(PHYSMEM_MAX_ADDR))
seg_end = MBTOB(PHYSMEM_MAX_ADDR);
#endif
@ -592,9 +589,9 @@ x86_add_cluster(phys_ram_seg_t *seg_clusters, int seg_cluster_cnt,
seg_end = trunc_page(seg_end);
if (seg_start == seg_end)
return seg_cluster_cnt;
return 0;
cluster = &seg_clusters[seg_cluster_cnt];
cluster = &mem_clusters[mem_cluster_cnt];
cluster->start = seg_start;
if (iomem_ex != NULL)
new_physmem = physmem + atop(seg_end - seg_start);
@ -602,7 +599,7 @@ x86_add_cluster(phys_ram_seg_t *seg_clusters, int seg_cluster_cnt,
#ifdef PHYSMEM_MAX_SIZE
if (iomem_ex != NULL) {
if (physmem >= atop(MBTOB(PHYSMEM_MAX_SIZE)))
return seg_cluster_cnt;
return 0;
if (new_physmem > atop(MBTOB(PHYSMEM_MAX_SIZE))) {
seg_end = seg_start + MBTOB(PHYSMEM_MAX_SIZE) - ptoa(physmem);
new_physmem = atop(MBTOB(PHYSMEM_MAX_SIZE));
@ -617,9 +614,9 @@ x86_add_cluster(phys_ram_seg_t *seg_clusters, int seg_cluster_cnt,
avail_end = seg_end;
physmem = new_physmem;
}
seg_cluster_cnt++;
mem_cluster_cnt++;
return seg_cluster_cnt;
return 0;
}
static int
@ -680,16 +677,10 @@ x86_parse_clusters(struct btinfo_memmap *bim, struct extent *iomem_ex)
"0x%"PRIx64"/0x%"PRIx64"/0x%x\n", seg_start,
seg_end - seg_start, type);
mem_cluster_cnt = x86_add_cluster(mem_clusters,
mem_cluster_cnt, iomem_ex, seg_start, 0xa0000,
type);
mem_cluster_cnt = x86_add_cluster(mem_clusters,
mem_cluster_cnt, iomem_ex, 0x100000, seg_end,
type);
x86_add_cluster(iomem_ex, seg_start, 0xa0000, type);
x86_add_cluster(iomem_ex, 0x100000, seg_end, type);
} else {
mem_cluster_cnt = x86_add_cluster(mem_clusters,
mem_cluster_cnt, iomem_ex, seg_start, seg_end,
type);
x86_add_cluster(iomem_ex, seg_start, seg_end, type);
}
}