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[libata] SCSI: support INQUIRY page 89h (ATA info page) 

Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Jeff Garzik 2007-09-21 20:38:03 -04:00
parent d4155e6f13
commit ad355b4628
1 changed files with 68 additions and 4 deletions
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72
drivers/ata/libata-scsi.c
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@ -1803,6 +1803,61 @@ unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf,
return 0;
}
/**
* ata_scsiop_inq_89 - Simulate INQUIRY VPD page 89, ATA info
* @args: device IDENTIFY data / SCSI command of interest.
* @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
* @buflen: Response buffer length.
*
* Yields SAT-specified ATA VPD page.
*
* LOCKING:
* spin_lock_irqsave(host lock)
*/
unsigned int ata_scsiop_inq_89(struct ata_scsi_args *args, u8 *rbuf,
unsigned int buflen)
{
u8 pbuf[60];
struct ata_taskfile tf;
unsigned int i;
if (!buflen)
return 0;
memset(&pbuf, 0, sizeof(pbuf));
memset(&tf, 0, sizeof(tf));
pbuf[1] = 0x89; /* our page code */
pbuf[2] = (0x238 >> 8); /* page size fixed at 238h */
pbuf[3] = (0x238 & 0xff);
memcpy(&pbuf[8], "ATA ", 8);
ata_id_string(args->id, &pbuf[16], ATA_ID_PROD, 16);
ata_id_string(args->id, &pbuf[32], ATA_ID_FW_REV, 4);
/* we don't store the ATA device signature, so we fake it */
tf.command = ATA_DRDY; /* really, this is Status reg */
tf.lbal = 0x1;
tf.nsect = 0x1;
ata_tf_to_fis(&tf, 0, 1, &pbuf[36]); /* TODO: PMP? */
pbuf[36] = 0x34; /* force D2H Reg FIS (34h) */
pbuf[56] = ATA_CMD_ID_ATA;
i = min(buflen, 60U);
memcpy(rbuf, &pbuf[0], i);
buflen -= i;
if (!buflen)
return 0;
memcpy(&rbuf[60], &args->id[0], min(buflen, 512U));
return 0;
}
/**
* ata_scsiop_noop - Command handler that simply returns success.
* @args: device IDENTIFY data / SCSI command of interest.
@ -2880,14 +2935,23 @@ void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd,
ata_scsi_invalid_field(cmd, done);
else if ((scsicmd[1] & 1) == 0) /* is EVPD clear? */
ata_scsi_rbuf_fill(&args, ata_scsiop_inq_std);
else if (scsicmd[2] == 0x00)
else switch (scsicmd[2]) {
case 0x00:
ata_scsi_rbuf_fill(&args, ata_scsiop_inq_00);
else if (scsicmd[2] == 0x80)
break;
case 0x80:
ata_scsi_rbuf_fill(&args, ata_scsiop_inq_80);
else if (scsicmd[2] == 0x83)
break;
case 0x83:
ata_scsi_rbuf_fill(&args, ata_scsiop_inq_83);
else
break;
case 0x89:
ata_scsi_rbuf_fill(&args, ata_scsiop_inq_89);
break;
default:
ata_scsi_invalid_field(cmd, done);
break;
}
break;
case MODE_SENSE: