Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev

9 files changed, 719 insertions, 167 deletions

diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index f53d7b8ac33f..b1b1c6f01419 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -370,6 +370,8 @@ static void ata_tf_read_pio(struct ata_port *ap, struct ata_taskfile *tf)
 {
         struct ata_ioports *ioaddr = &ap->ioaddr;
 
+        tf->command = ata_check_status(ap);
+        tf->feature = ata_chk_err(ap);
         tf->nsect = inb(ioaddr->nsect_addr);
         tf->lbal = inb(ioaddr->lbal_addr);
         tf->lbam = inb(ioaddr->lbam_addr);
@@ -402,6 +404,8 @@ static void ata_tf_read_mmio(struct ata_port *ap, struct ata_taskfile *tf)
 {
         struct ata_ioports *ioaddr = &ap->ioaddr;
 
+        tf->command = ata_check_status(ap);
+        tf->feature = ata_chk_err(ap);
         tf->nsect = readb((void __iomem *)ioaddr->nsect_addr);
         tf->lbal = readb((void __iomem *)ioaddr->lbal_addr);
         tf->lbam = readb((void __iomem *)ioaddr->lbam_addr);
@@ -4254,11 +4258,10 @@ int ata_device_add(const struct ata_probe_ent *ent)
 
         DPRINTK("ENTER\n");
         /* alloc a container for our list of ATA ports (buses) */
-        host_set = kmalloc(sizeof(struct ata_host_set) +
+        host_set = kzalloc(sizeof(struct ata_host_set) +
                            (ent->n_ports * sizeof(void *)), GFP_KERNEL);
         if (!host_set)
                 return 0;
-        memset(host_set, 0, sizeof(struct ata_host_set) + (ent->n_ports * sizeof(void *)));
         spin_lock_init(&host_set->lock);
 
         host_set->dev = dev;
@@ -4298,10 +4301,8 @@ int ata_device_add(const struct ata_probe_ent *ent)
                 count++;
         }
 
-        if (!count) {
-                kfree(host_set);
-                return 0;
-        }
+        if (!count)
+                goto err_free_ret;
 
         /* obtain irq, that is shared between channels */
         if (request_irq(ent->irq, ent->port_ops->irq_handler, ent->irq_flags,
@@ -4359,6 +4360,7 @@ err_out:
                 ata_host_remove(host_set->ports[i], 1);
                 scsi_host_put(host_set->ports[i]->host);
         }
+err_free_ret:
         kfree(host_set);
         VPRINTK("EXIT, returning 0\n");
         return 0;
@@ -4468,15 +4470,13 @@ ata_probe_ent_alloc(struct device *dev, const struct ata_port_info *port)
 {
         struct ata_probe_ent *probe_ent;
 
-        probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL);
+        probe_ent = kzalloc(sizeof(*probe_ent), GFP_KERNEL);
         if (!probe_ent) {
                 printk(KERN_ERR DRV_NAME "(%s): out of memory\n",
                        kobject_name(&(dev->kobj)));
                 return NULL;
         }
 
-        memset(probe_ent, 0, sizeof(*probe_ent));
-
         INIT_LIST_HEAD(&probe_ent->node);
         probe_ent->dev = dev;
 
diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c
index 58858886d751..89a04b1a5a0e 100644
--- a/drivers/scsi/libata-scsi.c
+++ b/drivers/scsi/libata-scsi.c
@@ -40,14 +40,56 @@
 #include "scsi.h"
 #include <scsi/scsi_host.h>
 #include <linux/libata.h>
+#include <linux/hdreg.h>
 #include <asm/uaccess.h>
 
 #include "libata.h"
 
+#define SECTOR_SIZE     512
+
 typedef unsigned int (*ata_xlat_func_t)(struct ata_queued_cmd *qc, const u8 *scsicmd);
 static struct ata_device *
 ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev);
 
+#define RW_RECOVERY_MPAGE 0x1
+#define RW_RECOVERY_MPAGE_LEN 12
+#define CACHE_MPAGE 0x8
+#define CACHE_MPAGE_LEN 20
+#define CONTROL_MPAGE 0xa
+#define CONTROL_MPAGE_LEN 12
+#define ALL_MPAGES 0x3f
+#define ALL_SUB_MPAGES 0xff
+
+
+static const u8 def_rw_recovery_mpage[] = {
+        RW_RECOVERY_MPAGE,
+        RW_RECOVERY_MPAGE_LEN - 2,
+        (1 << 7) |      /* AWRE, sat-r06 say it shall be 0 */
+            (1 << 6),   /* ARRE (auto read reallocation) */
+        0,              /* read retry count */
+        0, 0, 0, 0,
+        0,              /* write retry count */
+        0, 0, 0
+};
+
+static const u8 def_cache_mpage[CACHE_MPAGE_LEN] = {
+        CACHE_MPAGE,
+        CACHE_MPAGE_LEN - 2,
+        0,              /* contains WCE, needs to be 0 for logic */
+        0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0,              /* contains DRA, needs to be 0 for logic */
+        0, 0, 0, 0, 0, 0, 0
+};
+
+static const u8 def_control_mpage[CONTROL_MPAGE_LEN] = {
+        CONTROL_MPAGE,
+        CONTROL_MPAGE_LEN - 2,
+        2,      /* DSENSE=0, GLTSD=1 */
+        0,      /* [QAM+QERR may be 1, see 05-359r1] */
+        0, 0, 0, 0, 0xff, 0xff,
+        0, 30   /* extended self test time, see 05-359r1 */
+};
+
 
 static void ata_scsi_invalid_field(struct scsi_cmnd *cmd,
                                    void (*done)(struct scsi_cmnd *))
@@ -86,6 +128,150 @@ int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev,
         return 0;
 }
 
+/**
+ *      ata_cmd_ioctl - Handler for HDIO_DRIVE_CMD ioctl
+ *      @dev: Device to whom we are issuing command
+ *      @arg: User provided data for issuing command
+ *
+ *      LOCKING:
+ *      Defined by the SCSI layer.  We don't really care.
+ *
+ *      RETURNS:
+ *      Zero on success, negative errno on error.
+ */
+
+int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg)
+{
+        int rc = 0;
+        u8 scsi_cmd[MAX_COMMAND_SIZE];
+        u8 args[4], *argbuf = NULL;
+        int argsize = 0;
+        struct scsi_request *sreq;
+
+        if (NULL == (void *)arg)
+                return -EINVAL;
+
+        if (copy_from_user(args, arg, sizeof(args)))
+                return -EFAULT;
+
+        sreq = scsi_allocate_request(scsidev, GFP_KERNEL);
+        if (!sreq)
+                return -EINTR;
+
+        memset(scsi_cmd, 0, sizeof(scsi_cmd));
+
+        if (args[3]) {
+                argsize = SECTOR_SIZE * args[3];
+                argbuf = kmalloc(argsize, GFP_KERNEL);
+                if (argbuf == NULL) {
+                        rc = -ENOMEM;
+                        goto error;
+                }
+
+                scsi_cmd[1]  = (4 << 1); /* PIO Data-in */
+                scsi_cmd[2]  = 0x0e;     /* no off.line or cc, read from dev,
+                                            block count in sector count field */
+                sreq->sr_data_direction = DMA_FROM_DEVICE;
+        } else {
+                scsi_cmd[1]  = (3 << 1); /* Non-data */
+                /* scsi_cmd[2] is already 0 -- no off.line, cc, or data xfer */
+                sreq->sr_data_direction = DMA_NONE;
+        }
+
+        scsi_cmd[0] = ATA_16;
+
+        scsi_cmd[4] = args[2];
+        if (args[0] == WIN_SMART) { /* hack -- ide driver does this too... */
+                scsi_cmd[6]  = args[3];
+                scsi_cmd[8]  = args[1];
+                scsi_cmd[10] = 0x4f;
+                scsi_cmd[12] = 0xc2;
+        } else {
+                scsi_cmd[6]  = args[1];
+        }
+        scsi_cmd[14] = args[0];
+
+        /* Good values for timeout and retries?  Values below
+           from scsi_ioctl_send_command() for default case... */
+        scsi_wait_req(sreq, scsi_cmd, argbuf, argsize, (10*HZ), 5);
+
+        if (sreq->sr_result) {
+                rc = -EIO;
+                goto error;
+        }
+
+        /* Need code to retrieve data from check condition? */
+
+        if ((argbuf)
+         && copy_to_user((void *)(arg + sizeof(args)), argbuf, argsize))
+                rc = -EFAULT;
+error:
+        scsi_release_request(sreq);
+
+        if (argbuf)
+                kfree(argbuf);
+
+        return rc;
+}
+
+/**
+ *      ata_task_ioctl - Handler for HDIO_DRIVE_TASK ioctl
+ *      @dev: Device to whom we are issuing command
+ *      @arg: User provided data for issuing command
+ *
+ *      LOCKING:
+ *      Defined by the SCSI layer.  We don't really care.
+ *
+ *      RETURNS:
+ *      Zero on success, negative errno on error.
+ */
+int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg)
+{
+        int rc = 0;
+        u8 scsi_cmd[MAX_COMMAND_SIZE];
+        u8 args[7];
+        struct scsi_request *sreq;
+
+        if (NULL == (void *)arg)
+                return -EINVAL;
+
+        if (copy_from_user(args, arg, sizeof(args)))
+                return -EFAULT;
+
+        memset(scsi_cmd, 0, sizeof(scsi_cmd));
+        scsi_cmd[0]  = ATA_16;
+        scsi_cmd[1]  = (3 << 1); /* Non-data */
+        /* scsi_cmd[2] is already 0 -- no off.line, cc, or data xfer */
+        scsi_cmd[4]  = args[1];
+        scsi_cmd[6]  = args[2];
+        scsi_cmd[8]  = args[3];
+        scsi_cmd[10] = args[4];
+        scsi_cmd[12] = args[5];
+        scsi_cmd[14] = args[0];
+
+        sreq = scsi_allocate_request(scsidev, GFP_KERNEL);
+        if (!sreq) {
+                rc = -EINTR;
+                goto error;
+        }
+
+        sreq->sr_data_direction = DMA_NONE;
+        /* Good values for timeout and retries?  Values below
+           from scsi_ioctl_send_command() for default case... */
+        scsi_wait_req(sreq, scsi_cmd, NULL, 0, (10*HZ), 5);
+
+        if (sreq->sr_result) {
+                rc = -EIO;
+                goto error;
+        }
+
+        /* Need code to retrieve data from check condition? */
+
+error:
+        scsi_release_request(sreq);
+        return rc;
+}
+
 int ata_scsi_ioctl(struct scsi_device *scsidev, int cmd, void __user *arg)
 {
         struct ata_port *ap;
@@ -115,6 +301,16 @@ int ata_scsi_ioctl(struct scsi_device *scsidev, int cmd, void __user *arg)
                         return -EINVAL;
                 return 0;
 
+        case HDIO_DRIVE_CMD:
+                if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
+                        return -EACCES;
+                return ata_cmd_ioctl(scsidev, arg);
+
+        case HDIO_DRIVE_TASK:
+                if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
+                        return -EACCES;
+                return ata_task_ioctl(scsidev, arg);
+
         default:
                 rc = -ENOTTY;
                 break;
@@ -173,23 +369,70 @@ struct ata_queued_cmd *ata_scsi_qc_new(struct ata_port *ap,
 }
 
 /**
+ *      ata_dump_status - user friendly display of error info
+ *      @id: id of the port in question
+ *      @tf: ptr to filled out taskfile
+ *
+ *      Decode and dump the ATA error/status registers for the user so
+ *      that they have some idea what really happened at the non
+ *      make-believe layer.
+ *
+ *      LOCKING:
+ *      inherited from caller
+ */
+void ata_dump_status(unsigned id, struct ata_taskfile *tf)
+{
+        u8 stat = tf->command, err = tf->feature;
+
+        printk(KERN_WARNING "ata%u: status=0x%02x { ", id, stat);
+        if (stat & ATA_BUSY) {
+                printk("Busy }\n");     /* Data is not valid in this case */
+        } else {
+                if (stat & 0x40)        printk("DriveReady ");
+                if (stat & 0x20)        printk("DeviceFault ");
+                if (stat & 0x10)        printk("SeekComplete ");
+                if (stat & 0x08)        printk("DataRequest ");
+                if (stat & 0x04)        printk("CorrectedError ");
+                if (stat & 0x02)        printk("Index ");
+                if (stat & 0x01)        printk("Error ");
+                printk("}\n");
+
+                if (err) {
+                        printk(KERN_WARNING "ata%u: error=0x%02x { ", id, err);
+                        if (err & 0x04)         printk("DriveStatusError ");
+                        if (err & 0x80) {
+                                if (err & 0x04) printk("BadCRC ");
+                                else            printk("Sector ");
+                        }
+                        if (err & 0x40)         printk("UncorrectableError ");
+                        if (err & 0x10)         printk("SectorIdNotFound ");
+                        if (err & 0x02)         printk("TrackZeroNotFound ");
+                        if (err & 0x01)         printk("AddrMarkNotFound ");
+                        printk("}\n");
+                }
+        }
+}
+
+/**
  *      ata_to_sense_error - convert ATA error to SCSI error
- *      @qc: Command that we are erroring out
  *      @drv_stat: value contained in ATA status register
+ *      @drv_err: value contained in ATA error register
+ *      @sk: the sense key we'll fill out
+ *      @asc: the additional sense code we'll fill out
+ *      @ascq: the additional sense code qualifier we'll fill out
  *
- *      Converts an ATA error into a SCSI error. While we are at it
- *      we decode and dump the ATA error for the user so that they
- *      have some idea what really happened at the non make-believe
- *      layer.
+ *      Converts an ATA error into a SCSI error.  Fill out pointers to
+ *      SK, ASC, and ASCQ bytes for later use in fixed or descriptor
+ *      format sense blocks.
  *
  *      LOCKING:
  *      spin_lock_irqsave(host_set lock)
  */
-
-void ata_to_sense_error(struct ata_queued_cmd *qc, u8 drv_stat)
+void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk, u8 *asc, 
+                        u8 *ascq)
 {
-        struct scsi_cmnd *cmd = qc->scsicmd;
-        u8 err = 0;
+        int i;
+
         /* Based on the 3ware driver translation table */
         static unsigned char sense_table[][4] = {
                 /* BBD|ECC|ID|MAR */
@@ -230,96 +473,184 @@ void ata_to_sense_error(struct ata_queued_cmd *qc, u8 drv_stat)
                 {0x04,          RECOVERED_ERROR, 0x11, 0x00},   // Recovered ECC error    Medium error, recovered
                 {0xFF, 0xFF, 0xFF, 0xFF}, // END mark
         };
-        int i = 0;
 
         /*
          *      Is this an error we can process/parse
          */
-
-        if(drv_stat & ATA_ERR)
-                /* Read the err bits */
-                err = ata_chk_err(qc->ap);
-
-        /* Display the ATA level error info */
-
-        printk(KERN_WARNING "ata%u: status=0x%02x { ", qc->ap->id, drv_stat);
-        if(drv_stat & 0x80)
-        {
-                printk("Busy ");
-                err = 0;        /* Data is not valid in this case */
+        if (drv_stat & ATA_BUSY) {
+                drv_err = 0;    /* Ignore the err bits, they're invalid */
         }
-        else {
-                if(drv_stat & 0x40)     printk("DriveReady ");
-                if(drv_stat & 0x20)     printk("DeviceFault ");
-                if(drv_stat & 0x10)     printk("SeekComplete ");
-                if(drv_stat & 0x08)     printk("DataRequest ");
-                if(drv_stat & 0x04)     printk("CorrectedError ");
-                if(drv_stat & 0x02)     printk("Index ");
-                if(drv_stat & 0x01)     printk("Error ");
+
+        if (drv_err) {
+                /* Look for drv_err */
+                for (i = 0; sense_table[i][0] != 0xFF; i++) {
+                        /* Look for best matches first */
+                        if ((sense_table[i][0] & drv_err) == 
+                            sense_table[i][0]) {
+                                *sk = sense_table[i][1];
+                                *asc = sense_table[i][2];
+                                *ascq = sense_table[i][3];
+                                goto translate_done;
+                        }
+                }
+                /* No immediate match */
+                printk(KERN_WARNING "ata%u: no sense translation for "
+                       "error 0x%02x\n", id, drv_err);
         }
-        printk("}\n");
-
-        if(err)
-        {
-                printk(KERN_WARNING "ata%u: error=0x%02x { ", qc->ap->id, err);
-                if(err & 0x04)          printk("DriveStatusError ");
-                if(err & 0x80)
-                {
-                        if(err & 0x04)
-                                printk("BadCRC ");
-                        else
-                                printk("Sector ");
+
+        /* Fall back to interpreting status bits */
+        for (i = 0; stat_table[i][0] != 0xFF; i++) {
+                if (stat_table[i][0] & drv_stat) {
+                        *sk = stat_table[i][1];
+                        *asc = stat_table[i][2];
+                        *ascq = stat_table[i][3];
+                        goto translate_done;
                 }
-                if(err & 0x40)          printk("UncorrectableError ");
-                if(err & 0x10)          printk("SectorIdNotFound ");
-                if(err & 0x02)          printk("TrackZeroNotFound ");
-                if(err & 0x01)          printk("AddrMarkNotFound ");
-                printk("}\n");
+        }
+        /* No error?  Undecoded? */
+        printk(KERN_WARNING "ata%u: no sense translation for status: 0x%02x\n", 
+               id, drv_stat);
+
+        /* For our last chance pick, use medium read error because
+         * it's much more common than an ATA drive telling you a write
+         * has failed.
+         */
+        *sk = MEDIUM_ERROR;
+        *asc = 0x11; /* "unrecovered read error" */
+        *ascq = 0x04; /*  "auto-reallocation failed" */
+
+ translate_done:
+        printk(KERN_ERR "ata%u: translated ATA stat/err 0x%02x/%02x to "
+               "SCSI SK/ASC/ASCQ 0x%x/%02x/%02x\n", id, drv_stat, drv_err,
+               *sk, *asc, *ascq);
+        return;
+}
+
+/*
+ *      ata_gen_ata_desc_sense - Generate check condition sense block.
+ *      @qc: Command that completed.
+ *
+ *      This function is specific to the ATA descriptor format sense
+ *      block specified for the ATA pass through commands.  Regardless
+ *      of whether the command errored or not, return a sense
+ *      block. Copy all controller registers into the sense
+ *      block. Clear sense key, ASC & ASCQ if there is no error.
+ *
+ *      LOCKING:
+ *      spin_lock_irqsave(host_set lock)
+ */
+void ata_gen_ata_desc_sense(struct ata_queued_cmd *qc)
+{
+        struct scsi_cmnd *cmd = qc->scsicmd;
+        struct ata_taskfile *tf = &qc->tf;
+        unsigned char *sb = cmd->sense_buffer;
+        unsigned char *desc = sb + 8;
+
+        memset(sb, 0, SCSI_SENSE_BUFFERSIZE);
+
+        cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
+
+        /*
+         * Read the controller registers.
+         */
+        assert(NULL != qc->ap->ops->tf_read);
+        qc->ap->ops->tf_read(qc->ap, tf);
 
-                /* Should we dump sector info here too ?? */
+        /*
+         * Use ata_to_sense_error() to map status register bits
+         * onto sense key, asc & ascq.
+         */
+        if (unlikely(tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ))) {
+                ata_to_sense_error(qc->ap->id, tf->command, tf->feature,
+                                   &sb[1], &sb[2], &sb[3]);
+                sb[1] &= 0x0f;
         }
 
+        /*
+         * Sense data is current and format is descriptor.
+         */
+        sb[0] = 0x72;
 
-        /* Look for err */
-        while(sense_table[i][0] != 0xFF)
-        {
-                /* Look for best matches first */
-                if((sense_table[i][0] & err) == sense_table[i][0])
-                {
-                        ata_scsi_set_sense(cmd, sense_table[i][1] /* sk */,
-                                           sense_table[i][2] /* asc */,
-                                           sense_table[i][3] /* ascq */ );
-                        return;
-                }
-                i++;
+        desc[0] = 0x09;
+
+        /*
+         * Set length of additional sense data.
+         * Since we only populate descriptor 0, the total
+         * length is the same (fixed) length as descriptor 0.
+         */
+        desc[1] = sb[7] = 14;
+
+        /*
+         * Copy registers into sense buffer.
+         */
+        desc[2] = 0x00;
+        desc[3] = tf->feature;  /* == error reg */
+        desc[5] = tf->nsect;
+        desc[7] = tf->lbal;
+        desc[9] = tf->lbam;
+        desc[11] = tf->lbah;
+        desc[12] = tf->device;
+        desc[13] = tf->command; /* == status reg */
+
+        /*
+         * Fill in Extend bit, and the high order bytes
+         * if applicable.
+         */
+        if (tf->flags & ATA_TFLAG_LBA48) {
+                desc[2] |= 0x01;
+                desc[4] = tf->hob_nsect;
+                desc[6] = tf->hob_lbal;
+                desc[8] = tf->hob_lbam;
+                desc[10] = tf->hob_lbah;
         }
-        /* No immediate match */
-        if(err)
-                printk(KERN_DEBUG "ata%u: no sense translation for 0x%02x\n", qc->ap->id, err);
+}
 
-        i = 0;
-        /* Fall back to interpreting status bits */
-        while(stat_table[i][0] != 0xFF)
-        {
-                if(stat_table[i][0] & drv_stat)
-                {
-                        ata_scsi_set_sense(cmd, sense_table[i][1] /* sk */,
-                                           sense_table[i][2] /* asc */,
-                                           sense_table[i][3] /* ascq */ );
-                        return;
-                }
-                i++;
+/**
+ *      ata_gen_fixed_sense - generate a SCSI fixed sense block
+ *      @qc: Command that we are erroring out
+ *
+ *      Leverage ata_to_sense_error() to give us the codes.  Fit our
+ *      LBA in here if there's room.
+ *
+ *      LOCKING:
+ *      inherited from caller
+ */
+void ata_gen_fixed_sense(struct ata_queued_cmd *qc)
+{
+        struct scsi_cmnd *cmd = qc->scsicmd;
+        struct ata_taskfile *tf = &qc->tf;
+        unsigned char *sb = cmd->sense_buffer;
+
+        memset(sb, 0, SCSI_SENSE_BUFFERSIZE);
+
+        cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
+
+        /*
+         * Read the controller registers.
+         */
+        assert(NULL != qc->ap->ops->tf_read);
+        qc->ap->ops->tf_read(qc->ap, tf);
+
+        /*
+         * Use ata_to_sense_error() to map status register bits
+         * onto sense key, asc & ascq.
+         */
+        if (unlikely(tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ))) {
+                ata_to_sense_error(qc->ap->id, tf->command, tf->feature,
+                                   &sb[2], &sb[12], &sb[13]);
+                sb[2] &= 0x0f;
         }
-        /* No error ?? */
-        printk(KERN_ERR "ata%u: called with no error (%02X)!\n", qc->ap->id, drv_stat);
-        /* additional-sense-code[-qualifier] */
 
-        if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
-                ata_scsi_set_sense(cmd, MEDIUM_ERROR, 0x11, 0x4);
-                /* "unrecovered read error" */
-        } else {
-                ata_scsi_set_sense(cmd, MEDIUM_ERROR, 0xc, 0x2);
-                /* "write error - auto-reallocation failed" */
+        sb[0] = 0x70;
+        sb[7] = 0x0a;
+
+        if (tf->flags & ATA_TFLAG_LBA && !(tf->flags & ATA_TFLAG_LBA48)) {
+                /* A small (28b) LBA will fit in the 32b info field */
+                sb[0] |= 0x80;          /* set valid bit */
+                sb[3] = tf->device & 0x0f;
+                sb[4] = tf->lbah;
+                sb[5] = tf->lbam;
+                sb[6] = tf->lbal;
         }
 }
 
@@ -871,11 +1202,36 @@ nothing_to_do:
 static int ata_scsi_qc_complete(struct ata_queued_cmd *qc, u8 drv_stat)
 {
         struct scsi_cmnd *cmd = qc->scsicmd;
+        int need_sense = drv_stat & (ATA_ERR | ATA_BUSY | ATA_DRQ);
+
+        /* For ATA pass thru (SAT) commands, generate a sense block if
+         * user mandated it or if there's an error.  Note that if we
+         * generate because the user forced us to, a check condition
+         * is generated and the ATA register values are returned
+         * whether the command completed successfully or not. If there
+         * was no error, SK, ASC and ASCQ will all be zero.
+         */
+        if (((cmd->cmnd[0] == ATA_16) || (cmd->cmnd[0] == ATA_12)) &&
+            ((cmd->cmnd[2] & 0x20) || need_sense)) {
+                ata_gen_ata_desc_sense(qc);
+        } else {
+                if (!need_sense) {
+                        cmd->result = SAM_STAT_GOOD;
+                } else {
+                        /* TODO: decide which descriptor format to use
+                         * for 48b LBA devices and call that here
+                         * instead of the fixed desc, which is only
+                         * good for smaller LBA (and maybe CHS?)
+                         * devices.
+                         */
+                        ata_gen_fixed_sense(qc);
+                }
+        }
 
-        if (unlikely(drv_stat & (ATA_ERR | ATA_BUSY | ATA_DRQ)))
-                ata_to_sense_error(qc, drv_stat);
-        else
-                cmd->result = SAM_STAT_GOOD;
+        if (need_sense) {
+                /* The ata_gen_..._sense routines fill in tf */
+                ata_dump_status(qc->ap->id, &qc->tf);
+        }
 
         qc->scsidone(cmd);
 
@@ -1266,13 +1622,9 @@ static void ata_msense_push(u8 **ptr_io, const u8 *last,
 static unsigned int ata_msense_caching(u16 *id, u8 **ptr_io,
                                        const u8 *last)
 {
-        u8 page[] = {
-                0x8,                            /* page code */
-                0x12,                           /* page length */
-                0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   /* 10 zeroes */
-                0, 0, 0, 0, 0, 0, 0, 0          /* 8 zeroes */
-        };
+        u8 page[CACHE_MPAGE_LEN];
 
+        memcpy(page, def_cache_mpage, sizeof(page));
         if (ata_id_wcache_enabled(id))
                 page[2] |= (1 << 2);    /* write cache enable */
         if (!ata_id_rahead_enabled(id))
@@ -1296,15 +1648,9 @@ static unsigned int ata_msense_caching(u16 *id, u8 **ptr_io,
 
 static unsigned int ata_msense_ctl_mode(u8 **ptr_io, const u8 *last)
 {
-        const u8 page[] = {0xa, 0xa, 6, 0, 0, 0, 0, 0, 0xff, 0xff, 0, 30};
-
-        /* byte 2: set the descriptor format sense data bit (bit 2)
-         * since we need to support returning this format for SAT
-         * commands and any SCSI commands against a 48b LBA device.
-         */
-
-        ata_msense_push(ptr_io, last, page, sizeof(page));
-        return sizeof(page);
+        ata_msense_push(ptr_io, last, def_control_mpage,
+                        sizeof(def_control_mpage));
+        return sizeof(def_control_mpage);
 }
 
 /**
@@ -1321,15 +1667,10 @@ static unsigned int ata_msense_ctl_mode(u8 **ptr_io, const u8 *last)
 
 static unsigned int ata_msense_rw_recovery(u8 **ptr_io, const u8 *last)
 {
-        const u8 page[] = {
-                0x1,                      /* page code */
-                0xa,                      /* page length */
-                (1 << 7) | (1 << 6),      /* note auto r/w reallocation */
-                0, 0, 0, 0, 0, 0, 0, 0, 0 /* 9 zeroes */
-        };
 
-        ata_msense_push(ptr_io, last, page, sizeof(page));
-        return sizeof(page);
+        ata_msense_push(ptr_io, last, def_rw_recovery_mpage,
+                        sizeof(def_rw_recovery_mpage));
+        return sizeof(def_rw_recovery_mpage);
 }
 
 /**
@@ -1338,7 +1679,9 @@ static unsigned int ata_msense_rw_recovery(u8 **ptr_io, const u8 *last)
  *      @rbuf: Response buffer, to which simulated SCSI cmd output is sent.
  *      @buflen: Response buffer length.
  *
- *      Simulate MODE SENSE commands.
+ *      Simulate MODE SENSE commands. Assume this is invoked for direct
+ *      access devices (e.g. disks) only. There should be no block
+ *      descriptor for other device types.
  *
  *      LOCKING:
  *      spin_lock_irqsave(host_set lock)
@@ -1348,15 +1691,22 @@ unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf,
                                   unsigned int buflen)
 {
         u8 *scsicmd = args->cmd->cmnd, *p, *last;
-        unsigned int page_control, six_byte, output_len;
+        const u8 sat_blk_desc[] = {
+                0, 0, 0, 0,     /* number of blocks: sat unspecified */
+                0,
+                0, 0x2, 0x0     /* block length: 512 bytes */
+        };
+        u8 pg, spg;
+        unsigned int ebd, page_control, six_byte, output_len, alloc_len, minlen;
 
         VPRINTK("ENTER\n");
 
         six_byte = (scsicmd[0] == MODE_SENSE);
-
-        /* we only support saved and current values (which we treat
-         * in the same manner)
+        ebd = !(scsicmd[1] & 0x8);      /* dbd bit inverted == edb */
+        /*
+         * LLBA bit in msense(10) ignored (compliant)
          */
+
         page_control = scsicmd[2] >> 6;
         switch (page_control) {
         case 0: /* current */
@@ -1369,29 +1719,42 @@ unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf,
                 goto invalid_fld;
         }
 
-        if (six_byte)
-                output_len = 4;
-        else
-                output_len = 8;
+        if (six_byte) {
+                output_len = 4 + (ebd ? 8 : 0);
+                alloc_len = scsicmd[4];
+        } else {
+                output_len = 8 + (ebd ? 8 : 0);
+                alloc_len = (scsicmd[7] << 8) + scsicmd[8];
+        }
+        minlen = (alloc_len < buflen) ? alloc_len : buflen;
 
         p = rbuf + output_len;
-        last = rbuf + buflen - 1;
+        last = rbuf + minlen - 1;
 
-        switch(scsicmd[2] & 0x3f) {
-        case 0x01:              /* r/w error recovery */
+        pg = scsicmd[2] & 0x3f;
+        spg = scsicmd[3];
+        /*
+         * No mode subpages supported (yet) but asking for _all_
+         * subpages may be valid
+         */
+        if (spg && (spg != ALL_SUB_MPAGES))
+                goto invalid_fld;
+
+        switch(pg) {
+        case RW_RECOVERY_MPAGE:
                 output_len += ata_msense_rw_recovery(&p, last);
                 break;
 
-        case 0x08:              /* caching */
+        case CACHE_MPAGE:
                 output_len += ata_msense_caching(args->id, &p, last);
                 break;
 
-        case 0x0a: {            /* control mode */
+        case CONTROL_MPAGE: {
                 output_len += ata_msense_ctl_mode(&p, last);
                 break;
                 }
 
-        case 0x3f:              /* all pages */
+        case ALL_MPAGES:
                 output_len += ata_msense_rw_recovery(&p, last);
                 output_len += ata_msense_caching(args->id, &p, last);
                 output_len += ata_msense_ctl_mode(&p, last);
@@ -1401,15 +1764,31 @@ unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf,
                 goto invalid_fld;
         }
 
+        if (minlen < 1)
+                return 0;
         if (six_byte) {
                 output_len--;
                 rbuf[0] = output_len;
+                if (ebd) {
+                        if (minlen > 3)
+                                rbuf[3] = sizeof(sat_blk_desc);
+                        if (minlen > 11)
+                                memcpy(rbuf + 4, sat_blk_desc,
+                                       sizeof(sat_blk_desc));
+                }
         } else {
                 output_len -= 2;
                 rbuf[0] = output_len >> 8;
-                rbuf[1] = output_len;
+                if (minlen > 1)
+                        rbuf[1] = output_len;
+                if (ebd) {
+                        if (minlen > 7)
+                                rbuf[7] = sizeof(sat_blk_desc);
+                        if (minlen > 15)
+                                memcpy(rbuf + 8, sat_blk_desc,
+                                       sizeof(sat_blk_desc));
+                }
         }
-
         return 0;
 
 invalid_fld:
@@ -1623,7 +2002,12 @@ static int atapi_qc_complete(struct ata_queued_cmd *qc, u8 drv_stat)
         VPRINTK("ENTER, drv_stat == 0x%x\n", drv_stat);
 
         if (unlikely(drv_stat & (ATA_BUSY | ATA_DRQ)))
-                ata_to_sense_error(qc, drv_stat);
+                /* FIXME: not quite right; we don't want the
+                 * translation of taskfile registers into
+                 * a sense descriptors, since that's only
+                 * correct for ATA, not ATAPI
+                 */
+                ata_gen_ata_desc_sense(qc);
 
         else if (unlikely(drv_stat & ATA_ERR)) {
                 DPRINTK("request check condition\n");
@@ -1782,6 +2166,143 @@ ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev)
         return dev;
 }
 
+/*
+ *      ata_scsi_map_proto - Map pass-thru protocol value to taskfile value.
+ *      @byte1: Byte 1 from pass-thru CDB.
+ *
+ *      RETURNS:
+ *      ATA_PROT_UNKNOWN if mapping failed/unimplemented, protocol otherwise.
+ */
+static u8
+ata_scsi_map_proto(u8 byte1)
+{
+        switch((byte1 & 0x1e) >> 1) {
+                case 3:         /* Non-data */
+                        return ATA_PROT_NODATA;
+
+                case 6:         /* DMA */
+                        return ATA_PROT_DMA;
+
+                case 4:         /* PIO Data-in */
+                case 5:         /* PIO Data-out */
+                        if (byte1 & 0xe0) {
+                                return ATA_PROT_PIO_MULT;
+                        }
+                        return ATA_PROT_PIO;
+
+                case 10:        /* Device Reset */
+                case 0:         /* Hard Reset */
+                case 1:         /* SRST */
+                case 2:         /* Bus Idle */
+                case 7:         /* Packet */
+                case 8:         /* DMA Queued */
+                case 9:         /* Device Diagnostic */
+                case 11:        /* UDMA Data-in */
+                case 12:        /* UDMA Data-Out */
+                case 13:        /* FPDMA */
+                default:        /* Reserved */
+                        break;
+        }
+
+        return ATA_PROT_UNKNOWN;
+}
+
+/**
+ *      ata_scsi_pass_thru - convert ATA pass-thru CDB to taskfile
+ *      @qc: command structure to be initialized
+ *      @cmd: SCSI command to convert
+ *
+ *      Handles either 12 or 16-byte versions of the CDB.
+ *
+ *      RETURNS:
+ *      Zero on success, non-zero on failure.
+ */
+static unsigned int
+ata_scsi_pass_thru(struct ata_queued_cmd *qc, const u8 *scsicmd)
+{
+        struct ata_taskfile *tf = &(qc->tf);
+        struct scsi_cmnd *cmd = qc->scsicmd;
+
+        if ((tf->protocol = ata_scsi_map_proto(scsicmd[1])) == ATA_PROT_UNKNOWN)
+                return 1;
+
+        /*
+         * 12 and 16 byte CDBs use different offsets to
+         * provide the various register values.
+         */
+        if (scsicmd[0] == ATA_16) {
+                /*
+                 * 16-byte CDB - may contain extended commands.
+                 *
+                 * If that is the case, copy the upper byte register values.
+                 */
+                if (scsicmd[1] & 0x01) {
+                        tf->hob_feature = scsicmd[3];
+                        tf->hob_nsect = scsicmd[5];
+                        tf->hob_lbal = scsicmd[7];
+                        tf->hob_lbam = scsicmd[9];
+                        tf->hob_lbah = scsicmd[11];
+                        tf->flags |= ATA_TFLAG_LBA48;
+                } else
+                        tf->flags &= ~ATA_TFLAG_LBA48;
+
+                /*
+                 * Always copy low byte, device and command registers.
+                 */
+                tf->feature = scsicmd[4];
+                tf->nsect = scsicmd[6];
+                tf->lbal = scsicmd[8];
+                tf->lbam = scsicmd[10];
+                tf->lbah = scsicmd[12];
+                tf->device = scsicmd[13];
+                tf->command = scsicmd[14];
+        } else {
+                /*
+                 * 12-byte CDB - incapable of extended commands.
+                 */
+                tf->flags &= ~ATA_TFLAG_LBA48;
+
+                tf->feature = scsicmd[3];
+                tf->nsect = scsicmd[4];
+                tf->lbal = scsicmd[5];
+                tf->lbam = scsicmd[6];
+                tf->lbah = scsicmd[7];
+                tf->device = scsicmd[8];
+                tf->command = scsicmd[9];
+        }
+
+        /*
+         * Filter SET_FEATURES - XFER MODE command -- otherwise,
+         * SET_FEATURES - XFER MODE must be preceded/succeeded
+         * by an update to hardware-specific registers for each
+         * controller (i.e. the reason for ->set_piomode(),
+         * ->set_dmamode(), and ->post_set_mode() hooks).
+         */
+        if ((tf->command == ATA_CMD_SET_FEATURES)
+         && (tf->feature == SETFEATURES_XFER))
+                return 1;
+
+        /*
+         * Set flags so that all registers will be written,
+         * and pass on write indication (used for PIO/DMA
+         * setup.)
+         */
+        tf->flags |= (ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE);
+
+        if (cmd->sc_data_direction == DMA_TO_DEVICE)
+                tf->flags |= ATA_TFLAG_WRITE;
+
+        /*
+         * Set transfer length.
+         *
+         * TODO: find out if we need to do more here to
+         *       cover scatter/gather case.
+         */
+        qc->nsect = cmd->bufflen / ATA_SECT_SIZE;
+
+        return 0;
+}
+
 /**
  *      ata_get_xlat_func - check if SCSI to ATA translation is possible
  *      @dev: ATA device
@@ -1814,6 +2335,11 @@ static inline ata_xlat_func_t ata_get_xlat_func(struct ata_device *dev, u8 cmd)
         case VERIFY:
         case VERIFY_16:
                 return ata_scsi_verify_xlat;
+
+        case ATA_12:
+        case ATA_16:
+                return ata_scsi_pass_thru;
+
         case START_STOP:
                 return ata_scsi_start_stop_xlat;
         }
@@ -1972,7 +2498,7 @@ void ata_scsi_simulate(u16 *id,
                         ata_scsi_rbuf_fill(&args, ata_scsiop_report_luns);
                         break;
 
-                /* mandantory commands we haven't implemented yet */
+                /* mandatory commands we haven't implemented yet */
                 case REQUEST_SENSE:
 
                 /* all other commands */
diff --git a/drivers/scsi/libata.h b/drivers/scsi/libata.h
index 3d60190584ba..65c264b91136 100644
--- a/drivers/scsi/libata.h
+++ b/drivers/scsi/libata.h
@@ -50,13 +50,14 @@ extern void ata_dev_select(struct ata_port *ap, unsigned int device,
                            unsigned int wait, unsigned int can_sleep);
 extern void ata_tf_to_host_nolock(struct ata_port *ap, const struct ata_taskfile *tf);
 extern void swap_buf_le16(u16 *buf, unsigned int buf_words);
+extern int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg);
+extern int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg);
 
 
 /* libata-scsi.c */
 extern void atapi_request_sense(struct ata_port *ap, struct ata_device *dev,
                          struct scsi_cmnd *cmd);
 extern void ata_scsi_scan_host(struct ata_port *ap);
-extern void ata_to_sense_error(struct ata_queued_cmd *qc, u8 drv_stat);
 extern int ata_scsi_error(struct Scsi_Host *host);
 extern unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf,
                                unsigned int buflen);
diff --git a/drivers/scsi/pdc_adma.c b/drivers/scsi/pdc_adma.c
index 9820f272f889..af99feb9d237 100644
--- a/drivers/scsi/pdc_adma.c
+++ b/drivers/scsi/pdc_adma.c
@@ -46,7 +46,7 @@
 #include <linux/libata.h>
 
 #define DRV_NAME        "pdc_adma"
-#define DRV_VERSION     "0.01"
+#define DRV_VERSION     "0.03"
 
 /* macro to calculate base address for ATA regs */
 #define ADMA_ATA_REGS(base,port_no)     ((base) + ((port_no) * 0x40))
@@ -79,7 +79,6 @@ enum {
         aNIEN                   = (1 << 8), /* irq mask: 1==masked */
         aGO                     = (1 << 7), /* packet trigger ("Go!") */
         aRSTADM                 = (1 << 5), /* ADMA logic reset */
-        aRSTA                   = (1 << 2), /* ATA hard reset */
         aPIOMD4                 = 0x0003,   /* PIO mode 4 */
 
         /* ADMA_STATUS register bits */
@@ -452,24 +451,25 @@ static inline unsigned int adma_intr_pkt(struct ata_host_set *host_set)
                 struct adma_port_priv *pp;
                 struct ata_queued_cmd *qc;
                 void __iomem *chan = ADMA_REGS(mmio_base, port_no);
-                u8 drv_stat, status = readb(chan + ADMA_STATUS);
+                u8 drv_stat = 0, status = readb(chan + ADMA_STATUS);
 
                 if (status == 0)
                         continue;
                 handled = 1;
                 adma_enter_reg_mode(ap);
-                if ((ap->flags & ATA_FLAG_PORT_DISABLED))
+                if (ap->flags & (ATA_FLAG_PORT_DISABLED | ATA_FLAG_NOINTR))
                         continue;
                 pp = ap->private_data;
                 if (!pp || pp->state != adma_state_pkt)
                         continue;
                 qc = ata_qc_from_tag(ap, ap->active_tag);
-                drv_stat = 0;
-                if ((status & (aPERR | aPSD | aUIRQ)))
-                        drv_stat = ATA_ERR;
-                else if (pp->pkt[0] != cDONE)
-                        drv_stat = ATA_ERR;
-                ata_qc_complete(qc, drv_stat);
+                if (qc && (!(qc->tf.ctl & ATA_NIEN))) {
+                        if ((status & (aPERR | aPSD | aUIRQ)))
+                                drv_stat = ATA_ERR;
+                        else if (pp->pkt[0] != cDONE)
+                                drv_stat = ATA_ERR;
+                        ata_qc_complete(qc, drv_stat);
+                }
         }
         return handled;
 }
@@ -490,7 +490,7 @@ static inline unsigned int adma_intr_mmio(struct ata_host_set *host_set)
                         if (qc && (!(qc->tf.ctl & ATA_NIEN))) {
 
                                 /* check main status, clearing INTRQ */
-                                u8 status = ata_chk_status(ap);
+                                u8 status = ata_check_status(ap);
                                 if ((status & ATA_BUSY))
                                         continue;
                                 DPRINTK("ata%u: protocol %d (dev_stat 0x%X)\n",
@@ -561,15 +561,15 @@ static int adma_port_start(struct ata_port *ap)
         if ((pp->pkt_dma & 7) != 0) {
                 printk("bad alignment for pp->pkt_dma: %08x\n",
                                                 (u32)pp->pkt_dma);
-                goto err_out_kfree2;
+                dma_free_coherent(dev, ADMA_PKT_BYTES,
+                                                pp->pkt, pp->pkt_dma);
+                goto err_out_kfree;
         }
         memset(pp->pkt, 0, ADMA_PKT_BYTES);
         ap->private_data = pp;
         adma_reinit_engine(ap);
         return 0;
 
-err_out_kfree2:
-        kfree(pp);
 err_out_kfree:
         kfree(pp);
 err_out:
diff --git a/drivers/scsi/sata_promise.c b/drivers/scsi/sata_promise.c
index eee93b0016df..63911f16b6ec 100644
--- a/drivers/scsi/sata_promise.c
+++ b/drivers/scsi/sata_promise.c
@@ -195,6 +195,8 @@ static struct ata_port_info pdc_port_info[] = {
 static struct pci_device_id pdc_ata_pci_tbl[] = {
         { PCI_VENDOR_ID_PROMISE, 0x3371, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
           board_2037x },
+        { PCI_VENDOR_ID_PROMISE, 0x3570, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+          board_2037x },
         { PCI_VENDOR_ID_PROMISE, 0x3571, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
           board_2037x },
         { PCI_VENDOR_ID_PROMISE, 0x3373, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
@@ -207,6 +209,8 @@ static struct pci_device_id pdc_ata_pci_tbl[] = {
           board_2037x },
         { PCI_VENDOR_ID_PROMISE, 0x3d75, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
           board_2037x },
+        { PCI_VENDOR_ID_PROMISE, 0x3d73, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+          board_2037x },
 
         { PCI_VENDOR_ID_PROMISE, 0x3318, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
           board_20319 },
diff --git a/drivers/scsi/sata_qstor.c b/drivers/scsi/sata_qstor.c
index 250dafa6bc36..1aaf3304d397 100644
--- a/drivers/scsi/sata_qstor.c
+++ b/drivers/scsi/sata_qstor.c
@@ -433,7 +433,7 @@ static inline unsigned int qs_intr_mmio(struct ata_host_set *host_set)
                         if (qc && (!(qc->tf.ctl & ATA_NIEN))) {
 
                                 /* check main status, clearing INTRQ */
-                                u8 status = ata_chk_status(ap);
+                                u8 status = ata_check_status(ap);
                                 if ((status & ATA_BUSY))
                                         continue;
                                 DPRINTK("ata%u: protocol %d (dev_stat 0x%X)\n",
diff --git a/drivers/scsi/sata_svw.c b/drivers/scsi/sata_svw.c
index e0f9570bc6dd..46208f52d0e1 100644
--- a/drivers/scsi/sata_svw.c
+++ b/drivers/scsi/sata_svw.c
@@ -84,6 +84,8 @@
 /* Port stride */
 #define K2_SATA_PORT_OFFSET             0x100
 
+static u8 k2_stat_check_status(struct ata_port *ap);
+
 
 static u32 k2_sata_scr_read (struct ata_port *ap, unsigned int sc_reg)
 {
@@ -136,16 +138,24 @@ static void k2_sata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf)
 static void k2_sata_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
 {
         struct ata_ioports *ioaddr = &ap->ioaddr;
-        u16 nsect, lbal, lbam, lbah;
+        u16 nsect, lbal, lbam, lbah, feature;
 
-        nsect = tf->nsect = readw(ioaddr->nsect_addr);
-        lbal = tf->lbal = readw(ioaddr->lbal_addr);
-        lbam = tf->lbam = readw(ioaddr->lbam_addr);
-        lbah = tf->lbah = readw(ioaddr->lbah_addr);
+        tf->command = k2_stat_check_status(ap);
         tf->device = readw(ioaddr->device_addr);
+        feature = readw(ioaddr->error_addr);
+        nsect = readw(ioaddr->nsect_addr);
+        lbal = readw(ioaddr->lbal_addr);
+        lbam = readw(ioaddr->lbam_addr);
+        lbah = readw(ioaddr->lbah_addr);
+
+        tf->feature = feature;
+        tf->nsect = nsect;
+        tf->lbal = lbal;
+        tf->lbam = lbam;
+        tf->lbah = lbah;
 
         if (tf->flags & ATA_TFLAG_LBA48) {
-                tf->hob_feature = readw(ioaddr->error_addr) >> 8;
+                tf->hob_feature = feature >> 8;
                 tf->hob_nsect = nsect >> 8;
                 tf->hob_lbal = lbal >> 8;
                 tf->hob_lbam = lbam >> 8;
diff --git a/drivers/scsi/sata_vsc.c b/drivers/scsi/sata_vsc.c
index 5af05fdf8544..54273e0063c7 100644
--- a/drivers/scsi/sata_vsc.c
+++ b/drivers/scsi/sata_vsc.c
@@ -153,16 +153,24 @@ static void vsc_sata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf)
 static void vsc_sata_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
 {
         struct ata_ioports *ioaddr = &ap->ioaddr;
-        u16 nsect, lbal, lbam, lbah;
+        u16 nsect, lbal, lbam, lbah, feature;
 
-        nsect = tf->nsect = readw(ioaddr->nsect_addr);
-        lbal = tf->lbal = readw(ioaddr->lbal_addr);
-        lbam = tf->lbam = readw(ioaddr->lbam_addr);
-        lbah = tf->lbah = readw(ioaddr->lbah_addr);
+        tf->command = ata_check_status(ap);
         tf->device = readw(ioaddr->device_addr);
+        feature = readw(ioaddr->error_addr);
+        nsect = readw(ioaddr->nsect_addr);
+        lbal = readw(ioaddr->lbal_addr);
+        lbam = readw(ioaddr->lbam_addr);
+        lbah = readw(ioaddr->lbah_addr);
+
+        tf->feature = feature;
+        tf->nsect = nsect;
+        tf->lbal = lbal;
+        tf->lbam = lbam;
+        tf->lbah = lbah;
 
         if (tf->flags & ATA_TFLAG_LBA48) {
-                tf->hob_feature = readb(ioaddr->error_addr);
+                tf->hob_feature = feature >> 8;
                 tf->hob_nsect = nsect >> 8;
                 tf->hob_lbal = lbal >> 8;
                 tf->hob_lbam = lbam >> 8;
diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h
index b361172b576c..6cb1e2788d8b 100644
--- a/include/scsi/scsi.h
+++ b/include/scsi/scsi.h
@@ -116,6 +116,9 @@ extern const char *const scsi_device_types[MAX_SCSI_DEVICE_CODE];
 /* values for service action in */
 #define SAI_READ_CAPACITY_16  0x10
 
+/* Values for T10/04-262r7 */
+#define ATA_16                0x85      /* 16-byte pass-thru */
+#define ATA_12                0xa1      /* 12-byte pass-thru */
 
 /*
  *  SCSI Architecture Model (SAM) Status codes. Taken from SAM-3 draft