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ide: Adds wwn=hex qdev option 

Allow the user to specify a disk's World Wide Name.

Linux guests can address disks by their unique World Wide Name number
(e.g. /dev/disk/by-id/wwn-0x5001517959123522). This patch adds support
for assigning a World Wide Name number to a virtual IDE disk.

Cc: kwolf@redhat.com
Signed-off-by: Floris Bos <dev@noc-ps.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Floris Bos 2012-03-13 13:31:47 +01:00 committed by Kevin Wolf
parent aa2c91bdfe
commit 95ebda85e0
3 changed files with 29 additions and 8 deletions
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29
hw/ide/core.c
View File

@ -142,8 +142,12 @@ static void ide_identify(IDEState *s)
put_le16(p + 82, (1 << 14) | (1 << 5) | 1);
/* 13=flush_cache_ext,12=flush_cache,10=lba48 */
put_le16(p + 83, (1 << 14) | (1 << 13) | (1 <<12) | (1 << 10));
/* 14=set to 1, 1=SMART self test, 0=SMART error logging */
put_le16(p + 84, (1 << 14) | 0);
/* 14=set to 1, 8=has WWN, 1=SMART self test, 0=SMART error logging */
if (s->wwn) {
put_le16(p + 84, (1 << 14) | (1 << 8) | 0);
} else {
put_le16(p + 84, (1 << 14) | 0);
}
/* 14 = NOP supported, 5=WCACHE enabled, 0=SMART feature set enabled */
if (bdrv_enable_write_cache(s->bs))
put_le16(p + 85, (1 << 14) | (1 << 5) | 1);
@ -151,8 +155,12 @@ static void ide_identify(IDEState *s)
put_le16(p + 85, (1 << 14) | 1);
/* 13=flush_cache_ext,12=flush_cache,10=lba48 */
put_le16(p + 86, (1 << 13) | (1 <<12) | (1 << 10));
/* 14=set to 1, 1=smart self test, 0=smart error logging */
put_le16(p + 87, (1 << 14) | 0);
/* 14=set to 1, 8=has WWN, 1=SMART self test, 0=SMART error logging */
if (s->wwn) {
put_le16(p + 87, (1 << 14) | (1 << 8) | 0);
} else {
put_le16(p + 87, (1 << 14) | 0);
}
put_le16(p + 88, 0x3f | (1 << 13)); /* udma5 set and supported */
put_le16(p + 93, 1 | (1 << 14) | 0x2000);
put_le16(p + 100, s->nb_sectors);
@ -162,6 +170,13 @@ static void ide_identify(IDEState *s)
if (dev && dev->conf.physical_block_size)
put_le16(p + 106, 0x6000 | get_physical_block_exp(&dev->conf));
if (s->wwn) {
/* LE 16-bit words 111-108 contain 64-bit World Wide Name */
put_le16(p + 108, s->wwn >> 48);
put_le16(p + 109, s->wwn >> 32);
put_le16(p + 110, s->wwn >> 16);
put_le16(p + 111, s->wwn);
}
if (dev && dev->conf.discard_granularity) {
put_le16(p + 169, 1); /* TRIM support */
}
@ -1833,7 +1848,8 @@ static const BlockDevOps ide_cd_block_ops = {
};
int ide_init_drive(IDEState *s, BlockDriverState *bs, IDEDriveKind kind,
const char *version, const char *serial, const char *model)
const char *version, const char *serial, const char *model,
uint64_t wwn)
{
int cylinders, heads, secs;
uint64_t nb_sectors;
@ -1859,6 +1875,7 @@ int ide_init_drive(IDEState *s, BlockDriverState *bs, IDEDriveKind kind,
s->heads = heads;
s->sectors = secs;
s->nb_sectors = nb_sectors;
s->wwn = wwn;
/* The SMART values should be preserved across power cycles
but they aren't. */
s->smart_enabled = 1;
@ -1993,7 +2010,7 @@ void ide_init2_with_non_qdev_drives(IDEBus *bus, DriveInfo *hd0,
if (ide_init_drive(&bus->ifs[i], dinfo->bdrv,
dinfo->media_cd ? IDE_CD : IDE_HD, NULL,
*dinfo->serial ? dinfo->serial : NULL,
NULL) < 0) {
NULL, 0) < 0) {
error_report("Can't set up IDE drive %s", dinfo->id);
exit(1);
}

5
hw/ide/internal.h
View File

@ -349,6 +349,7 @@ struct IDEState {
int drive_serial;
char drive_serial_str[21];
char drive_model_str[41];
uint64_t wwn;
/* ide regs */
uint8_t feature;
uint8_t error;
@ -470,6 +471,7 @@ struct IDEDevice {
char *version;
char *serial;
char *model;
uint64_t wwn;
};
#define BM_STATUS_DMAING 0x01
@ -536,7 +538,8 @@ void ide_data_writel(void *opaque, uint32_t addr, uint32_t val);
uint32_t ide_data_readl(void *opaque, uint32_t addr);
int ide_init_drive(IDEState *s, BlockDriverState *bs, IDEDriveKind kind,
const char *version, const char *serial, const char *model);
const char *version, const char *serial, const char *model,
uint64_t wwn);
void ide_init2(IDEBus *bus, qemu_irq irq);
void ide_init2_with_non_qdev_drives(IDEBus *bus, DriveInfo *hd0,
DriveInfo *hd1, qemu_irq irq);

3
hw/ide/qdev.c
View File

@ -137,7 +137,7 @@ static int ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind)
}
if (ide_init_drive(s, dev->conf.bs, kind,
dev->version, serial, dev->model) < 0) {
dev->version, serial, dev->model, dev->wwn) < 0) {
return -1;
}
@ -174,6 +174,7 @@ static int ide_drive_initfn(IDEDevice *dev)
#define DEFINE_IDE_DEV_PROPERTIES() \
DEFINE_BLOCK_PROPERTIES(IDEDrive, dev.conf), \
DEFINE_PROP_STRING("ver", IDEDrive, dev.version), \
DEFINE_PROP_HEX64("wwn", IDEDrive, dev.wwn, 0), \
DEFINE_PROP_STRING("serial", IDEDrive, dev.serial),\
DEFINE_PROP_STRING("model", IDEDrive, dev.model)