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x86: Change range end to start+size

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So make interface more consistent with early_res.
Later we can share some code with early_res.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <1265793639-15071-10-git-send-email-yinghai@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
Yinghai Lu 2010-02-10 01:20:13 -08:00 committed by H. Peter Anvin
parent 284f933d45
commit e9a0064ad0
3 changed files with 40 additions and 36 deletions
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32
arch/x86/kernel/cpu/mtrr/cleanup.c
View File

@ -78,13 +78,13 @@ x86_get_mtrr_mem_range(struct range *range, int nr_range,
base = range_state[i].base_pfn; base = range_state[i].base_pfn;
size = range_state[i].size_pfn; size = range_state[i].size_pfn;
nr_range = add_range_with_merge(range, RANGE_NUM, nr_range, nr_range = add_range_with_merge(range, RANGE_NUM, nr_range,
base, base + size - 1); base, base + size);
} }
if (debug_print) { if (debug_print) {
printk(KERN_DEBUG "After WB checking\n"); printk(KERN_DEBUG "After WB checking\n");
for (i = 0; i < nr_range; i++) for (i = 0; i < nr_range; i++)
printk(KERN_DEBUG "MTRR MAP PFN: %016llx - %016llx\n", printk(KERN_DEBUG "MTRR MAP PFN: %016llx - %016llx\n",
range[i].start, range[i].end + 1); range[i].start, range[i].end);
} }
/* Take out UC ranges: */ /* Take out UC ranges: */
@ -106,11 +106,11 @@ x86_get_mtrr_mem_range(struct range *range, int nr_range,
size -= (1<<(20-PAGE_SHIFT)) - base; size -= (1<<(20-PAGE_SHIFT)) - base;
base = 1<<(20-PAGE_SHIFT); base = 1<<(20-PAGE_SHIFT);
} }
subtract_range(range, RANGE_NUM, base, base + size - 1); subtract_range(range, RANGE_NUM, base, base + size);
} }
if (extra_remove_size) if (extra_remove_size)
subtract_range(range, RANGE_NUM, extra_remove_base, subtract_range(range, RANGE_NUM, extra_remove_base,
extra_remove_base + extra_remove_size - 1); extra_remove_base + extra_remove_size);
if (debug_print) { if (debug_print) {
printk(KERN_DEBUG "After UC checking\n"); printk(KERN_DEBUG "After UC checking\n");
@ -118,7 +118,7 @@ x86_get_mtrr_mem_range(struct range *range, int nr_range,
if (!range[i].end) if (!range[i].end)
continue; continue;
printk(KERN_DEBUG "MTRR MAP PFN: %016llx - %016llx\n", printk(KERN_DEBUG "MTRR MAP PFN: %016llx - %016llx\n",
range[i].start, range[i].end + 1); range[i].start, range[i].end);
} }
} }
@ -128,7 +128,7 @@ x86_get_mtrr_mem_range(struct range *range, int nr_range,
printk(KERN_DEBUG "After sorting\n"); printk(KERN_DEBUG "After sorting\n");
for (i = 0; i < nr_range; i++) for (i = 0; i < nr_range; i++)
printk(KERN_DEBUG "MTRR MAP PFN: %016llx - %016llx\n", printk(KERN_DEBUG "MTRR MAP PFN: %016llx - %016llx\n",
range[i].start, range[i].end + 1); range[i].start, range[i].end);
} }
return nr_range; return nr_range;
@ -142,7 +142,7 @@ static unsigned long __init sum_ranges(struct range *range, int nr_range)
int i; int i;
for (i = 0; i < nr_range; i++) for (i = 0; i < nr_range; i++)
sum += range[i].end + 1 - range[i].start; sum += range[i].end - range[i].start;
return sum; return sum;
} }
@ -489,7 +489,7 @@ x86_setup_var_mtrrs(struct range *range, int nr_range,
/* Write the range: */ /* Write the range: */
for (i = 0; i < nr_range; i++) { for (i = 0; i < nr_range; i++) {
set_var_mtrr_range(&var_state, range[i].start, set_var_mtrr_range(&var_state, range[i].start,
range[i].end - range[i].start + 1); range[i].end - range[i].start);
} }
/* Write the last range: */ /* Write the last range: */
@ -720,7 +720,7 @@ int __init mtrr_cleanup(unsigned address_bits)
* and fixed mtrrs should take effect before var mtrr for it: * and fixed mtrrs should take effect before var mtrr for it:
*/ */
nr_range = add_range_with_merge(range, RANGE_NUM, nr_range, 0, nr_range = add_range_with_merge(range, RANGE_NUM, nr_range, 0,
(1ULL<<(20 - PAGE_SHIFT)) - 1); 1ULL<<(20 - PAGE_SHIFT));
/* Sort the ranges: */ /* Sort the ranges: */
sort_range(range, nr_range); sort_range(range, nr_range);
@ -939,9 +939,9 @@ int __init mtrr_trim_uncached_memory(unsigned long end_pfn)
nr_range = 0; nr_range = 0;
if (mtrr_tom2) { if (mtrr_tom2) {
range[nr_range].start = (1ULL<<(32 - PAGE_SHIFT)); range[nr_range].start = (1ULL<<(32 - PAGE_SHIFT));
range[nr_range].end = (mtrr_tom2 >> PAGE_SHIFT) - 1; range[nr_range].end = mtrr_tom2 >> PAGE_SHIFT;
if (highest_pfn < range[nr_range].end + 1) if (highest_pfn < range[nr_range].end)
highest_pfn = range[nr_range].end + 1; highest_pfn = range[nr_range].end;
nr_range++; nr_range++;
} }
nr_range = x86_get_mtrr_mem_range(range, nr_range, 0, 0); nr_range = x86_get_mtrr_mem_range(range, nr_range, 0, 0);
@ -953,15 +953,15 @@ int __init mtrr_trim_uncached_memory(unsigned long end_pfn)
/* Check the holes: */ /* Check the holes: */
for (i = 0; i < nr_range - 1; i++) { for (i = 0; i < nr_range - 1; i++) {
if (range[i].end + 1 < range[i+1].start) if (range[i].end < range[i+1].start)
total_trim_size += real_trim_memory(range[i].end + 1, total_trim_size += real_trim_memory(range[i].end,
range[i+1].start); range[i+1].start);
} }
/* Check the top: */ /* Check the top: */
i = nr_range - 1; i = nr_range - 1;
if (range[i].end + 1 < end_pfn) if (range[i].end < end_pfn)
total_trim_size += real_trim_memory(range[i].end + 1, total_trim_size += real_trim_memory(range[i].end,
end_pfn); end_pfn);
if (total_trim_size) { if (total_trim_size) {

24
arch/x86/pci/amd_bus.c
View File

@ -145,7 +145,7 @@ static int __init early_fill_mp_bus_info(void)
def_link = (reg >> 8) & 0x03; def_link = (reg >> 8) & 0x03;
memset(range, 0, sizeof(range)); memset(range, 0, sizeof(range));
range[0].end = 0xffff; add_range(range, RANGE_NUM, 0, 0, 0xffff + 1);
/* io port resource */ /* io port resource */
for (i = 0; i < 4; i++) { for (i = 0; i < 4; i++) {
reg = read_pci_config(bus, slot, 1, 0xc0 + (i << 3)); reg = read_pci_config(bus, slot, 1, 0xc0 + (i << 3));
@ -175,7 +175,7 @@ static int __init early_fill_mp_bus_info(void)
if (end > 0xffff) if (end > 0xffff)
end = 0xffff; end = 0xffff;
update_res(info, start, end, IORESOURCE_IO, 1); update_res(info, start, end, IORESOURCE_IO, 1);
subtract_range(range, RANGE_NUM, start, end); subtract_range(range, RANGE_NUM, start, end + 1);
} }
/* add left over io port range to def node/link, [0, 0xffff] */ /* add left over io port range to def node/link, [0, 0xffff] */
/* find the position */ /* find the position */
@ -190,14 +190,16 @@ static int __init early_fill_mp_bus_info(void)
if (!range[i].end) if (!range[i].end)
continue; continue;
update_res(info, range[i].start, range[i].end, update_res(info, range[i].start, range[i].end - 1,
IORESOURCE_IO, 1); IORESOURCE_IO, 1);
} }
} }
memset(range, 0, sizeof(range)); memset(range, 0, sizeof(range));
/* 0xfd00000000-0xffffffffff for HT */ /* 0xfd00000000-0xffffffffff for HT */
range[0].end = cap_resource((0xfdULL<<32) - 1); end = cap_resource((0xfdULL<<32) - 1);
end++;
add_range(range, RANGE_NUM, 0, 0, end);
/* need to take out [0, TOM) for RAM*/ /* need to take out [0, TOM) for RAM*/
address = MSR_K8_TOP_MEM1; address = MSR_K8_TOP_MEM1;
@ -205,14 +207,15 @@ static int __init early_fill_mp_bus_info(void)
end = (val & 0xffffff800000ULL); end = (val & 0xffffff800000ULL);
printk(KERN_INFO "TOM: %016llx aka %lldM\n", end, end>>20); printk(KERN_INFO "TOM: %016llx aka %lldM\n", end, end>>20);
if (end < (1ULL<<32)) if (end < (1ULL<<32))
subtract_range(range, RANGE_NUM, 0, end - 1); subtract_range(range, RANGE_NUM, 0, end);
/* get mmconfig */ /* get mmconfig */
get_pci_mmcfg_amd_fam10h_range(); get_pci_mmcfg_amd_fam10h_range();
/* need to take out mmconf range */ /* need to take out mmconf range */
if (fam10h_mmconf_end) { if (fam10h_mmconf_end) {
printk(KERN_DEBUG "Fam 10h mmconf [%llx, %llx]\n", fam10h_mmconf_start, fam10h_mmconf_end); printk(KERN_DEBUG "Fam 10h mmconf [%llx, %llx]\n", fam10h_mmconf_start, fam10h_mmconf_end);
subtract_range(range, RANGE_NUM, fam10h_mmconf_start, fam10h_mmconf_end); subtract_range(range, RANGE_NUM, fam10h_mmconf_start,
fam10h_mmconf_end + 1);
} }
/* mmio resource */ /* mmio resource */
@ -267,7 +270,8 @@ static int __init early_fill_mp_bus_info(void)
/* we got a hole */ /* we got a hole */
endx = fam10h_mmconf_start - 1; endx = fam10h_mmconf_start - 1;
update_res(info, start, endx, IORESOURCE_MEM, 0); update_res(info, start, endx, IORESOURCE_MEM, 0);
subtract_range(range, RANGE_NUM, start, endx); subtract_range(range, RANGE_NUM, start,
endx + 1);
printk(KERN_CONT " ==> [%llx, %llx]", start, endx); printk(KERN_CONT " ==> [%llx, %llx]", start, endx);
start = fam10h_mmconf_end + 1; start = fam10h_mmconf_end + 1;
changed = 1; changed = 1;
@ -284,7 +288,7 @@ static int __init early_fill_mp_bus_info(void)
update_res(info, cap_resource(start), cap_resource(end), update_res(info, cap_resource(start), cap_resource(end),
IORESOURCE_MEM, 1); IORESOURCE_MEM, 1);
subtract_range(range, RANGE_NUM, start, end); subtract_range(range, RANGE_NUM, start, end + 1);
printk(KERN_CONT "\n"); printk(KERN_CONT "\n");
} }
@ -299,7 +303,7 @@ static int __init early_fill_mp_bus_info(void)
rdmsrl(address, val); rdmsrl(address, val);
end = (val & 0xffffff800000ULL); end = (val & 0xffffff800000ULL);
printk(KERN_INFO "TOM2: %016llx aka %lldM\n", end, end>>20); printk(KERN_INFO "TOM2: %016llx aka %lldM\n", end, end>>20);
subtract_range(range, RANGE_NUM, 1ULL<<32, end - 1); subtract_range(range, RANGE_NUM, 1ULL<<32, end);
} }
/* /*
@ -319,7 +323,7 @@ static int __init early_fill_mp_bus_info(void)
continue; continue;
update_res(info, cap_resource(range[i].start), update_res(info, cap_resource(range[i].start),
cap_resource(range[i].end), cap_resource(range[i].end - 1),
IORESOURCE_MEM, 1); IORESOURCE_MEM, 1);
} }
} }

20
kernel/range.c
View File

@ -13,7 +13,7 @@
int add_range(struct range *range, int az, int nr_range, u64 start, u64 end) int add_range(struct range *range, int az, int nr_range, u64 start, u64 end)
{ {
if (start > end) if (start >= end)
return nr_range; return nr_range;
/* Out of slots: */ /* Out of slots: */
@ -33,7 +33,7 @@ int add_range_with_merge(struct range *range, int az, int nr_range,
{ {
int i; int i;
if (start > end) if (start >= end)
return nr_range; return nr_range;
/* Try to merge it with old one: */ /* Try to merge it with old one: */
@ -46,7 +46,7 @@ int add_range_with_merge(struct range *range, int az, int nr_range,
common_start = max(range[i].start, start); common_start = max(range[i].start, start);
common_end = min(range[i].end, end); common_end = min(range[i].end, end);
if (common_start > common_end + 1) if (common_start > common_end)
continue; continue;
final_start = min(range[i].start, start); final_start = min(range[i].start, start);
@ -65,7 +65,7 @@ void subtract_range(struct range *range, int az, u64 start, u64 end)
{ {
int i, j; int i, j;
if (start > end) if (start >= end)
return; return;
for (j = 0; j < az; j++) { for (j = 0; j < az; j++) {
@ -79,15 +79,15 @@ void subtract_range(struct range *range, int az, u64 start, u64 end)
} }
if (start <= range[j].start && end < range[j].end && if (start <= range[j].start && end < range[j].end &&
range[j].start < end + 1) { range[j].start < end) {
range[j].start = end + 1; range[j].start = end;
continue; continue;
} }
if (start > range[j].start && end >= range[j].end && if (start > range[j].start && end >= range[j].end &&
range[j].end > start - 1) { range[j].end > start) {
range[j].end = start - 1; range[j].end = start;
continue; continue;
} }
@ -99,11 +99,11 @@ void subtract_range(struct range *range, int az, u64 start, u64 end)
} }
if (i < az) { if (i < az) {
range[i].end = range[j].end; range[i].end = range[j].end;
range[i].start = end + 1; range[i].start = end;
} else { } else {
printk(KERN_ERR "run of slot in ranges\n"); printk(KERN_ERR "run of slot in ranges\n");
} }
range[j].end = start - 1; range[j].end = start;
continue; continue;
} }
} }