/* Per the spec, only slot type and drawer type ODD can be supported */
static enum odd_mech_type zpodd_get_mech_type(struct ata_device *dev)
{
char buf[16];
unsigned int ret;
struct rm_feature_desc *desc = (void *)(buf + 8);
struct ata_taskfile tf = {};
char cdb[] = { GPCMD_GET_CONFIGURATION,
2, /* only 1 feature descriptor requested */
0, 3, /* 3, removable medium feature */
0, 0, 0,/* reserved */
0, sizeof(buf),
0, 0, 0,
};
tf.flags = ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
tf.command = ATA_CMD_PACKET;
tf.protocol = ATAPI_PROT_PIO;
tf.lbam = sizeof(buf);
ret = ata_exec_internal(dev, &tf, cdb, DMA_FROM_DEVICE,
buf, sizeof(buf), 0);
if (ret)
return ODD_MECH_TYPE_UNSUPPORTED;
if (be16_to_cpu(desc->feature_code) != 3)
return ODD_MECH_TYPE_UNSUPPORTED;
if (desc->mech_type == 0 && desc->load == 0 && desc->eject == 1)
return ODD_MECH_TYPE_SLOT;
else if (desc->mech_type == 1 && desc->load == 0 && desc->eject == 1)
return ODD_MECH_TYPE_DRAWER;
else
return ODD_MECH_TYPE_UNSUPPORTED;
}
/* Per the spec, only slot type and drawer type ODD can be supported */
static enum odd_mech_type zpodd_get_mech_type(struct ata_device *dev)
{
char *buf;
unsigned int ret;
struct rm_feature_desc *desc;
struct ata_taskfile tf;
static const char cdb[] = { GPCMD_GET_CONFIGURATION,
2, /* only 1 feature descriptor requested */
0, 3, /* 3, removable medium feature */
0, 0, 0,/* reserved */
0, 16,
0, 0, 0,
};
buf = kzalloc(16, GFP_KERNEL);
if (!buf)
return ODD_MECH_TYPE_UNSUPPORTED;
desc = (void *)(buf + 8);
ata_tf_init(dev, &tf);
tf.flags = ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
tf.command = ATA_CMD_PACKET;
tf.protocol = ATAPI_PROT_PIO;
tf.lbam = 16;
ret = ata_exec_internal(dev, &tf, cdb, DMA_FROM_DEVICE,
buf, 16, 0);
if (ret) {
kfree(buf);
return ODD_MECH_TYPE_UNSUPPORTED;
}
if (be16_to_cpu(desc->feature_code) != 3) {
kfree(buf);
return ODD_MECH_TYPE_UNSUPPORTED;
}
if (desc->mech_type == 0 && desc->load == 0 && desc->eject == 1) {
kfree(buf);
return ODD_MECH_TYPE_SLOT;
} else if (desc->mech_type == 1 && desc->load == 0 &&
desc->eject == 1) {
kfree(buf);
return ODD_MECH_TYPE_DRAWER;
} else {
kfree(buf);
return ODD_MECH_TYPE_UNSUPPORTED;
}
}
static int eject_tray(struct ata_device *dev)
{
struct ata_taskfile tf = {};
const char cdb[] = { GPCMD_START_STOP_UNIT,
0, 0, 0,
0x02, /* LoEj */
0, 0, 0, 0, 0, 0, 0,
};
tf.flags = ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
tf.command = ATA_CMD_PACKET;
tf.protocol = ATAPI_PROT_NODATA;
return ata_exec_internal(dev, &tf, cdb, DMA_NONE, NULL, 0, 0);
}
/**
* sata_pmp_write - write PMP register
* @link: link to write PMP register for
* @reg: register to write
* @r_val: value to write
*
* Write PMP register.
*
* LOCKING:
* Kernel thread context (may sleep).
*
* RETURNS:
* 0 on success, AC_ERR_* mask on failure.
*/
static unsigned int sata_pmp_write(struct ata_link *link, int reg, u32 val)
{
struct ata_port *ap = link->ap;
struct ata_device *pmp_dev = ap->link.device;
struct ata_taskfile tf;
ata_tf_init(pmp_dev, &tf);
tf.command = ATA_CMD_PMP_WRITE;
tf.protocol = ATA_PROT_NODATA;
tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
tf.feature = reg;
tf.device = link->pmp;
tf.nsect = val & 0xff;
tf.lbal = (val >> 8) & 0xff;
tf.lbam = (val >> 16) & 0xff;
tf.lbah = (val >> 24) & 0xff;
return ata_exec_internal(pmp_dev, &tf, NULL, DMA_NONE, NULL, 0,
SATA_PMP_SCR_TIMEOUT);
}
/**
* sata_pmp_read - read PMP register
* @link: link to read PMP register for
* @reg: register to read
* @r_val: resulting value
*
* Read PMP register.
*
* LOCKING:
* Kernel thread context (may sleep).
*
* RETURNS:
* 0 on success, AC_ERR_* mask on failure.
*/
static unsigned int sata_pmp_read(struct ata_link *link, int reg, u32 *r_val)
{
struct ata_port *ap = link->ap;
struct ata_device *pmp_dev = ap->link.device;
struct ata_taskfile tf;
unsigned int err_mask;
ata_tf_init(pmp_dev, &tf);
tf.command = ATA_CMD_PMP_READ;
tf.protocol = ATA_PROT_NODATA;
tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
tf.feature = reg;
tf.device = link->pmp;
err_mask = ata_exec_internal(pmp_dev, &tf, NULL, DMA_NONE, NULL, 0,
SATA_PMP_SCR_TIMEOUT);
if (err_mask)
return err_mask;
*r_val = tf.nsect | tf.lbal << 8 | tf.lbam << 16 | tf.lbah << 24;
return 0;
}