ATA_DEV_READ_ID

Section: libata Core Internals (9)
Updated: February 2011
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NAME

ata_dev_read_id - Read ID data from the specified device

SYNOPSIS

int ata_dev_read_id(struct ata_device * dev, unsigned int * p_class, unsigned int flags, u16 * id);

ARGUMENTS

dev

: target device

p_class

: pointer to class of the target device (may be changed)

flags

: ATA_READID_* flags

: buffer to read IDENTIFY data into

DESCRIPTION

Read ID data from the specified device. ATA_CMD_ID_ATA is performed on ATA devices and ATA_CMD_ID_ATAPI on ATAPI devices. This function also issues ATA_CMD_INIT_DEV_PARAMS for pre-ATA4 drives.

FIXME

ATA_CMD_ID_ATA is optional for early drives and right now we abort if we hit that case.

LOCKING

Kernel thread context (may sleep)

RETURNS

0 on success, -errno otherwise.

AUTHOR

Jeff Garzik

: Author.