#include <scsi/scsi.h>
#include "scsi.h"
#include <scsi/scsi_host.h>
+#include <scsi/scsi_device.h>
#include <linux/libata.h>
+#include <linux/hdreg.h>
#include <asm/uaccess.h>
#include "libata.h"
-typedef unsigned int (*ata_xlat_func_t)(struct ata_queued_cmd *qc, u8 *scsicmd);
-static struct ata_device *
-ata_scsi_find_dev(struct ata_port *ap, struct scsi_device *scsidev);
+#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 *))
+{
+ ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, 0x24, 0x0);
+ /* "Invalid field in cbd" */
+ done(cmd);
+}
/**
* ata_std_bios_param - generic bios head/sector/cylinder calculator used by sd.
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;
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;
qc->scsidone = done;
if (cmd->use_sg) {
- qc->sg = (struct scatterlist *) cmd->request_buffer;
+ qc->__sg = (struct scatterlist *) cmd->request_buffer;
qc->n_elem = cmd->use_sg;
} else {
- qc->sg = &qc->sgent;
+ qc->__sg = &qc->sgent;
qc->n_elem = 1;
}
} else {
}
/**
+ * 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;
- unsigned char *sb = cmd->sense_buffer;
+ int i;
+
/* Based on the 3ware driver translation table */
static unsigned char sense_table[][4] = {
/* BBD|ECC|ID|MAR */
{0x04, RECOVERED_ERROR, 0x11, 0x00}, // Recovered ECC error Medium error, recovered
{0xFF, 0xFF, 0xFF, 0xFF}, // END mark
};
- int i = 0;
-
- cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
/*
* Is this an error we can process/parse
*/
+ if (drv_stat & ATA_BUSY) {
+ drv_err = 0; /* Ignore the err bits, they're invalid */
+ }
- if(drv_stat & ATA_ERR)
- /* Read the err bits */
- err = ata_chk_err(qc->ap);
+ 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);
+ }
- /* Display the ATA level error info */
+ /* 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;
+ }
+ }
+ /* 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;
- 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 */
+ /*
+ * 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 (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;
}
- 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 ");
+
+ /*
+ * Sense data is current and format is descriptor.
+ */
+ sb[0] = 0x72;
+
+ 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;
}
- 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 ");
- }
- if(err & 0x40) printk("UncorrectableError ");
- if(err & 0x10) printk("SectorIdNotFound ");
- if(err & 0x02) printk("TrackZeroNotFound ");
- if(err & 0x01) printk("AddrMarkNotFound ");
- printk("}\n");
+}
+
+/**
+ * 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);
- /* Should we dump sector info here too ?? */
+ /*
+ * Use ata_to_sense_error() to map status register bits
+ * onto sense key, asc & ascq.
+ */
+ if (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;
}
+ sb[0] = 0x70;
+ sb[7] = 0x0a;
- /* Look for err */
- while(sense_table[i][0] != 0xFF)
- {
- /* Look for best matches first */
- if((sense_table[i][0] & err) == sense_table[i][0])
- {
- sb[0] = 0x70;
- sb[2] = sense_table[i][1];
- sb[7] = 0x0a;
- sb[12] = sense_table[i][2];
- sb[13] = sense_table[i][3];
- return;
- }
- i++;
+ if (tf->flags & ATA_TFLAG_LBA48) {
+ /* TODO: find solution for LBA48 descriptors */
}
- /* 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)
- {
- sb[0] = 0x70;
- sb[2] = stat_table[i][1];
- sb[7] = 0x0a;
- sb[12] = stat_table[i][2];
- sb[13] = stat_table[i][3];
- return;
- }
- i++;
+ else if (tf->flags & ATA_TFLAG_LBA) {
+ /* 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;
}
- /* No error ?? */
- printk(KERN_ERR "ata%u: called with no error (%02X)!\n", qc->ap->id, drv_stat);
- /* additional-sense-code[-qualifier] */
- sb[0] = 0x70;
- sb[2] = MEDIUM_ERROR;
- sb[7] = 0x0A;
- if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
- sb[12] = 0x11; /* "unrecovered read error" */
- sb[13] = 0x04;
- } else {
- sb[12] = 0x0C; /* "write error - */
- sb[13] = 0x02; /* auto-reallocation failed" */
+ else {
+ /* TODO: C/H/S */
}
}
*/
blk_queue_max_sectors(sdev->request_queue, 2048);
}
+
+ /*
+ * SATA DMA transfers must be multiples of 4 byte, so
+ * we need to pad ATAPI transfers using an extra sg.
+ * Decrement max hw segments accordingly.
+ */
+ if (dev->class == ATA_DEV_ATAPI) {
+ request_queue_t *q = sdev->request_queue;
+ blk_queue_max_hw_segments(q, q->max_hw_segments - 1);
+ }
}
return 0; /* scsi layer doesn't check return value, sigh */
*/
static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc,
- u8 *scsicmd)
+ const u8 *scsicmd)
{
struct ata_taskfile *tf = &qc->tf;
; /* ignore IMMED bit, violates sat-r05 */
}
if (scsicmd[4] & 0x2)
- return 1; /* LOEJ bit set not supported */
+ goto invalid_fld; /* LOEJ bit set not supported */
if (((scsicmd[4] >> 4) & 0xf) != 0)
- return 1; /* power conditions not supported */
+ goto invalid_fld; /* power conditions not supported */
if (scsicmd[4] & 0x1) {
tf->nsect = 1; /* 1 sector, lba=0 */
*/
return 0;
+
+invalid_fld:
+ ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x24, 0x0);
+ /* "Invalid field in cbd" */
+ return 1;
}
* Zero on success, non-zero on error.
*/
-static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc, u8 *scsicmd)
+static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc, const u8 *scsicmd)
{
struct ata_taskfile *tf = &qc->tf;
tf->flags |= ATA_TFLAG_DEVICE;
tf->protocol = ATA_PROT_NODATA;
- if ((tf->flags & ATA_TFLAG_LBA48) &&
+ if ((qc->dev->flags & ATA_DFLAG_LBA48) &&
(ata_id_has_flush_ext(qc->dev->id)))
tf->command = ATA_CMD_FLUSH_EXT;
else
* @plen: the transfer length
*/
-static void scsi_6_lba_len(u8 *scsicmd, u64 *plba, u32 *plen)
+static void scsi_6_lba_len(const u8 *scsicmd, u64 *plba, u32 *plen)
{
u64 lba = 0;
u32 len = 0;
* @plen: the transfer length
*/
-static void scsi_10_lba_len(u8 *scsicmd, u64 *plba, u32 *plen)
+static void scsi_10_lba_len(const u8 *scsicmd, u64 *plba, u32 *plen)
{
u64 lba = 0;
u32 len = 0;
* @plen: the transfer length
*/
-static void scsi_16_lba_len(u8 *scsicmd, u64 *plba, u32 *plen)
+static void scsi_16_lba_len(const u8 *scsicmd, u64 *plba, u32 *plen)
{
u64 lba = 0;
u32 len = 0;
* Zero on success, non-zero on error.
*/
-static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc, u8 *scsicmd)
+static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc, const u8 *scsicmd)
{
struct ata_taskfile *tf = &qc->tf;
struct ata_device *dev = qc->dev;
- unsigned int lba = tf->flags & ATA_TFLAG_LBA;
- unsigned int lba48 = tf->flags & ATA_TFLAG_LBA48;
u64 dev_sectors = qc->dev->n_sectors;
u64 block;
u32 n_block;
else if (scsicmd[0] == VERIFY_16)
scsi_16_lba_len(scsicmd, &block, &n_block);
else
- return 1;
+ goto invalid_fld;
if (!n_block)
- return 1;
+ goto nothing_to_do;
if (block >= dev_sectors)
- return 1;
+ goto out_of_range;
if ((block + n_block) > dev_sectors)
- return 1;
- if (lba48) {
- if (n_block > (64 * 1024))
- return 1;
- } else {
- if (n_block > 256)
- return 1;
- }
+ goto out_of_range;
+
+ if (dev->flags & ATA_DFLAG_LBA) {
+ tf->flags |= ATA_TFLAG_LBA;
+
+ if (lba_28_ok(block, n_block)) {
+ /* use LBA28 */
+ tf->command = ATA_CMD_VERIFY;
+ tf->device |= (block >> 24) & 0xf;
+ } else if (lba_48_ok(block, n_block)) {
+ if (!(dev->flags & ATA_DFLAG_LBA48))
+ goto out_of_range;
- if (lba) {
- if (lba48) {
+ /* use LBA48 */
+ tf->flags |= ATA_TFLAG_LBA48;
tf->command = ATA_CMD_VERIFY_EXT;
tf->hob_nsect = (n_block >> 8) & 0xff;
tf->hob_lbah = (block >> 40) & 0xff;
tf->hob_lbam = (block >> 32) & 0xff;
tf->hob_lbal = (block >> 24) & 0xff;
- } else {
- tf->command = ATA_CMD_VERIFY;
-
- tf->device |= (block >> 24) & 0xf;
- }
+ } else
+ /* request too large even for LBA48 */
+ goto out_of_range;
tf->nsect = n_block & 0xff;
/* CHS */
u32 sect, head, cyl, track;
+ if (!lba_28_ok(block, n_block))
+ goto out_of_range;
+
/* Convert LBA to CHS */
track = (u32)block / dev->sectors;
cyl = track / dev->heads;
Head: 0-15
Sector: 1-255*/
if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect))
- return 1;
+ goto out_of_range;
tf->command = ATA_CMD_VERIFY;
tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */
}
return 0;
+
+invalid_fld:
+ ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x24, 0x0);
+ /* "Invalid field in cbd" */
+ return 1;
+
+out_of_range:
+ ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x21, 0x0);
+ /* "Logical Block Address out of range" */
+ return 1;
+
+nothing_to_do:
+ qc->scsicmd->result = SAM_STAT_GOOD;
+ return 1;
}
/**
* Zero on success, non-zero on error.
*/
-static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc, u8 *scsicmd)
+static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc, const u8 *scsicmd)
{
struct ata_taskfile *tf = &qc->tf;
struct ata_device *dev = qc->dev;
- unsigned int lba = tf->flags & ATA_TFLAG_LBA;
- unsigned int lba48 = tf->flags & ATA_TFLAG_LBA48;
u64 block;
u32 n_block;
tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
- tf->protocol = qc->dev->xfer_protocol;
- if (scsicmd[0] == READ_10 || scsicmd[0] == READ_6 ||
- scsicmd[0] == READ_16) {
- tf->command = qc->dev->read_cmd;
- } else {
- tf->command = qc->dev->write_cmd;
+ if (scsicmd[0] == WRITE_10 || scsicmd[0] == WRITE_6 ||
+ scsicmd[0] == WRITE_16)
tf->flags |= ATA_TFLAG_WRITE;
- }
/* Calculate the SCSI LBA and transfer length. */
switch (scsicmd[0]) {
break;
default:
DPRINTK("no-byte command\n");
- return 1;
+ goto invalid_fld;
}
/* Check and compose ATA command */
* However, for ATA R/W commands, sector count 0 means
* 256 or 65536 sectors, not 0 sectors as in SCSI.
*/
- return 1;
+ goto nothing_to_do;
- if (lba) {
- if (lba48) {
- /* The request -may- be too large for LBA48. */
- if ((block >> 48) || (n_block > 65536))
- return 1;
+ if (dev->flags & ATA_DFLAG_LBA) {
+ tf->flags |= ATA_TFLAG_LBA;
+
+ if (lba_28_ok(block, n_block)) {
+ /* use LBA28 */
+ tf->device |= (block >> 24) & 0xf;
+ } else if (lba_48_ok(block, n_block)) {
+ if (!(dev->flags & ATA_DFLAG_LBA48))
+ goto out_of_range;
+
+ /* use LBA48 */
+ tf->flags |= ATA_TFLAG_LBA48;
tf->hob_nsect = (n_block >> 8) & 0xff;
tf->hob_lbah = (block >> 40) & 0xff;
tf->hob_lbam = (block >> 32) & 0xff;
tf->hob_lbal = (block >> 24) & 0xff;
- } else {
- /* LBA28 */
-
- /* The request -may- be too large for LBA28. */
- if ((block >> 28) || (n_block > 256))
- return 1;
+ } else
+ /* request too large even for LBA48 */
+ goto out_of_range;
- tf->device |= (block >> 24) & 0xf;
- }
+ ata_rwcmd_protocol(qc);
qc->nsect = n_block;
tf->nsect = n_block & 0xff;
u32 sect, head, cyl, track;
/* The request -may- be too large for CHS addressing. */
- if ((block >> 28) || (n_block > 256))
- return 1;
+ if (!lba_28_ok(block, n_block))
+ goto out_of_range;
+
+ ata_rwcmd_protocol(qc);
/* Convert LBA to CHS */
track = (u32)block / dev->sectors;
Head: 0-15
Sector: 1-255*/
if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect))
- return 1;
+ goto out_of_range;
qc->nsect = n_block;
tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */
}
return 0;
+
+invalid_fld:
+ ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x24, 0x0);
+ /* "Invalid field in cbd" */
+ return 1;
+
+out_of_range:
+ ata_scsi_set_sense(qc->scsicmd, ILLEGAL_REQUEST, 0x21, 0x0);
+ /* "Logical Block Address out of range" */
+ return 1;
+
+nothing_to_do:
+ qc->scsicmd->result = SAM_STAT_GOOD;
+ return 1;
}
-static int ata_scsi_qc_complete(struct ata_queued_cmd *qc, u8 drv_stat)
+static int ata_scsi_qc_complete(struct ata_queued_cmd *qc,
+ unsigned int err_mask)
{
struct scsi_cmnd *cmd = qc->scsicmd;
+ u8 *cdb = cmd->cmnd;
+ int need_sense = (err_mask != 0);
+
+ /* 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 (((cdb[0] == ATA_16) || (cdb[0] == ATA_12)) &&
+ ((cdb[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);
* This function sets up an ata_queued_cmd structure for the
* SCSI command, and sends that ata_queued_cmd to the hardware.
*
+ * The xlat_func argument (actor) returns 0 if ready to execute
+ * ATA command, else 1 to finish translation. If 1 is returned
+ * then cmd->result (and possibly cmd->sense_buffer) are assumed
+ * to be set reflecting an error condition or clean (early)
+ * termination.
+ *
* LOCKING:
* spin_lock_irqsave(host_set lock)
*/
qc = ata_scsi_qc_new(ap, dev, cmd, done);
if (!qc)
- return;
+ goto err_mem;
/* data is present; dma-map it */
if (cmd->sc_data_direction == DMA_FROM_DEVICE ||
if (unlikely(cmd->request_bufflen < 1)) {
printk(KERN_WARNING "ata%u(%u): WARNING: zero len r/w req\n",
ap->id, dev->devno);
- goto err_out;
+ goto err_did;
}
if (cmd->use_sg)
qc->complete_fn = ata_scsi_qc_complete;
if (xlat_func(qc, scsicmd))
- goto err_out;
+ goto early_finish;
/* select device, send command to hardware */
if (ata_qc_issue(qc))
- goto err_out;
+ goto err_did;
VPRINTK("EXIT\n");
return;
-err_out:
+early_finish:
+ ata_qc_free(qc);
+ done(cmd);
+ DPRINTK("EXIT - early finish (good or error)\n");
+ return;
+
+err_did:
ata_qc_free(qc);
- ata_bad_cdb(cmd, done);
- DPRINTK("EXIT - badcmd\n");
+err_mem:
+ cmd->result = (DID_ERROR << 16);
+ done(cmd);
+ DPRINTK("EXIT - internal\n");
+ return;
}
/**
* Mapping the response buffer, calling the command's handler,
* and handling the handler's return value. This return value
* indicates whether the handler wishes the SCSI command to be
- * completed successfully, or not.
+ * completed successfully (0), or not (in which case cmd->result
+ * and sense buffer are assumed to be set).
*
* LOCKING:
* spin_lock_irqsave(host_set lock)
rc = actor(args, rbuf, buflen);
ata_scsi_rbuf_put(cmd, rbuf);
- if (rc)
- ata_bad_cdb(cmd, args->done);
- else {
+ if (rc == 0)
cmd->result = SAM_STAT_GOOD;
- args->done(cmd);
- }
+ args->done(cmd);
}
/**
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))
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);
}
/**
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);
}
/**
* @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)
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;
- if ((page_control != 0) && (page_control != 3))
- return 1;
+ switch (page_control) {
+ case 0: /* current */
+ break; /* supported */
+ case 3: /* saved */
+ goto saving_not_supp;
+ case 1: /* changeable */
+ case 2: /* defaults */
+ default:
+ 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);
break;
default: /* invalid page code */
- return 1;
+ 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:
+ ata_scsi_set_sense(args->cmd, ILLEGAL_REQUEST, 0x24, 0x0);
+ /* "Invalid field in cbd" */
+ return 1;
+
+saving_not_supp:
+ ata_scsi_set_sense(args->cmd, ILLEGAL_REQUEST, 0x39, 0x0);
+ /* "Saving parameters not supported" */
+ return 1;
}
/**
}
/**
+ * ata_scsi_set_sense - Set SCSI sense data and status
+ * @cmd: SCSI request to be handled
+ * @sk: SCSI-defined sense key
+ * @asc: SCSI-defined additional sense code
+ * @ascq: SCSI-defined additional sense code qualifier
+ *
+ * Helper function that builds a valid fixed format, current
+ * response code and the given sense key (sk), additional sense
+ * code (asc) and additional sense code qualifier (ascq) with
+ * a SCSI command status of %SAM_STAT_CHECK_CONDITION and
+ * DRIVER_SENSE set in the upper bits of scsi_cmnd::result .
+ *
+ * LOCKING:
+ * Not required
+ */
+
+void ata_scsi_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq)
+{
+ cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
+
+ cmd->sense_buffer[0] = 0x70; /* fixed format, current */
+ cmd->sense_buffer[2] = sk;
+ cmd->sense_buffer[7] = 18 - 8; /* additional sense length */
+ cmd->sense_buffer[12] = asc;
+ cmd->sense_buffer[13] = ascq;
+}
+
+/**
* ata_scsi_badcmd - End a SCSI request with an error
* @cmd: SCSI request to be handled
* @done: SCSI command completion function
void ata_scsi_badcmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *), u8 asc, u8 ascq)
{
DPRINTK("ENTER\n");
- cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
-
- cmd->sense_buffer[0] = 0x70;
- cmd->sense_buffer[2] = ILLEGAL_REQUEST;
- cmd->sense_buffer[7] = 14 - 8; /* addnl. sense len. FIXME: correct? */
- cmd->sense_buffer[12] = asc;
- cmd->sense_buffer[13] = ascq;
+ ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, asc, ascq);
done(cmd);
}
DPRINTK("EXIT\n");
}
-static int atapi_qc_complete(struct ata_queued_cmd *qc, u8 drv_stat)
+static int atapi_qc_complete(struct ata_queued_cmd *qc, unsigned int err_mask)
{
struct scsi_cmnd *cmd = qc->scsicmd;
- VPRINTK("ENTER, drv_stat == 0x%x\n", drv_stat);
-
- if (unlikely(drv_stat & (ATA_BUSY | ATA_DRQ)))
- ata_to_sense_error(qc, drv_stat);
+ VPRINTK("ENTER, err_mask 0x%X\n", err_mask);
- else if (unlikely(drv_stat & ATA_ERR)) {
+ if (unlikely(err_mask & AC_ERR_DEV)) {
DPRINTK("request check condition\n");
/* FIXME: command completion with check condition
return 1;
}
+ else if (unlikely(err_mask))
+ /* 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 {
u8 *scsicmd = cmd->cmnd;
* Zero on success, non-zero on failure.
*/
-static unsigned int atapi_xlat(struct ata_queued_cmd *qc, u8 *scsicmd)
+static unsigned int atapi_xlat(struct ata_queued_cmd *qc, const u8 *scsicmd)
{
struct scsi_cmnd *cmd = qc->scsicmd;
struct ata_device *dev = qc->dev;
*/
static struct ata_device *
-ata_scsi_find_dev(struct ata_port *ap, struct scsi_device *scsidev)
+ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev)
{
struct ata_device *dev;
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
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;
}
struct ata_port *ap;
struct ata_device *dev;
struct scsi_device *scsidev = cmd->device;
+ struct Scsi_Host *shost = scsidev->host;
- ap = (struct ata_port *) &scsidev->host->hostdata[0];
+ ap = (struct ata_port *) &shost->hostdata[0];
+
+ spin_unlock(shost->host_lock);
+ spin_lock(&ap->host_set->lock);
ata_scsi_dump_cdb(ap, cmd);
ata_scsi_translate(ap, dev, cmd, done, atapi_xlat);
out_unlock:
+ spin_unlock(&ap->host_set->lock);
+ spin_lock(shost->host_lock);
return 0;
}
void (*done)(struct scsi_cmnd *))
{
struct ata_scsi_args args;
- u8 *scsicmd = cmd->cmnd;
+ const u8 *scsicmd = cmd->cmnd;
args.id = id;
args.cmd = cmd;
case INQUIRY:
if (scsicmd[1] & 2) /* is CmdDt set? */
- ata_bad_cdb(cmd, done);
+ 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 if (scsicmd[2] == 0x83)
ata_scsi_rbuf_fill(&args, ata_scsiop_inq_83);
else
- ata_bad_cdb(cmd, done);
+ ata_scsi_invalid_field(cmd, done);
break;
case MODE_SENSE:
case MODE_SELECT: /* unconditionally return */
case MODE_SELECT_10: /* bad-field-in-cdb */
- ata_bad_cdb(cmd, done);
+ ata_scsi_invalid_field(cmd, done);
break;
case READ_CAPACITY:
if ((scsicmd[1] & 0x1f) == SAI_READ_CAPACITY_16)
ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap);
else
- ata_bad_cdb(cmd, done);
+ ata_scsi_invalid_field(cmd, done);
break;
case REPORT_LUNS:
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 */
default:
- ata_bad_scsiop(cmd, done);
+ ata_scsi_set_sense(cmd, ILLEGAL_REQUEST, 0x20, 0x0);
+ /* "Invalid command operation code" */
+ done(cmd);
break;
}
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff