Revision 2fa5008f
| b/hw/hd-geometry.c | ||
|---|---|---|
| 97 | 97 |
return -1; |
| 98 | 98 |
} |
| 99 | 99 |
|
| 100 |
static void guess_chs_for_size(BlockDriverState *bs, |
|
| 101 |
int *pcyls, int *pheads, int *psecs) |
|
| 102 |
{
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|
| 103 |
uint64_t nb_sectors; |
|
| 104 |
int cylinders; |
|
| 105 |
|
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| 106 |
bdrv_get_geometry(bs, &nb_sectors); |
|
| 107 |
|
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| 108 |
cylinders = nb_sectors / (16 * 63); |
|
| 109 |
if (cylinders > 16383) {
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|
| 110 |
cylinders = 16383; |
|
| 111 |
} else if (cylinders < 2) {
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| 112 |
cylinders = 2; |
|
| 113 |
} |
|
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*pcyls = cylinders; |
|
| 115 |
*pheads = 16; |
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| 116 |
*psecs = 63; |
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| 117 |
} |
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| 118 |
|
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| 100 | 119 |
void hd_geometry_guess(BlockDriverState *bs, |
| 101 | 120 |
int *pcyls, int *pheads, int *psecs) |
| 102 | 121 |
{
|
| 103 | 122 |
int translation, lba_detected = 0; |
| 104 | 123 |
int cylinders, heads, secs; |
| 105 |
uint64_t nb_sectors; |
|
| 106 | 124 |
|
| 107 |
bdrv_get_geometry(bs, &nb_sectors); |
|
| 108 | 125 |
bdrv_get_geometry_hint(bs, &cylinders, &heads, &secs); |
| 109 | 126 |
translation = bdrv_get_translation_hint(bs); |
| 110 | 127 |
|
| ... | ... | |
| 119 | 136 |
if (guess_disk_lchs(bs, &cylinders, &heads, &secs) < 0) {
|
| 120 | 137 |
/* no LCHS guess: use a standard physical disk geometry */ |
| 121 | 138 |
default_geometry: |
| 122 |
cylinders = nb_sectors / (16 * 63); |
|
| 123 |
|
|
| 124 |
if (cylinders > 16383) {
|
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| 125 |
cylinders = 16383; |
|
| 126 |
} else if (cylinders < 2) {
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| 127 |
cylinders = 2; |
|
| 128 |
} |
|
| 129 |
*pcyls = cylinders; |
|
| 130 |
*pheads = 16; |
|
| 131 |
*psecs = 63; |
|
| 139 |
guess_chs_for_size(bs, pcyls, pheads, psecs); |
|
| 132 | 140 |
if ((lba_detected == 1) && (translation == BIOS_ATA_TRANSLATION_AUTO)) {
|
| 133 | 141 |
if ((*pcyls * *pheads) <= 131072) {
|
| 134 | 142 |
bdrv_set_translation_hint(bs, |
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