Merge branch 'post-2.6.15' of git://brick.kernel.dk/data/git/linux-2.6-block

[sfrench/cifs-2.6.git] / drivers / scsi / libata-scsi.c

diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c
index 2282c04fee4635097c0f3566f4251e6bd7cc5238..cfbceb5047183e3096bb494bc3e2419c8956cd93 100644 (file)
--- a/drivers/scsi/libata-scsi.c
+++ b/drivers/scsi/libata-scsi.c
@@ -396,6 +396,22 @@ void ata_dump_status(unsigned id, struct ata_taskfile *tf)
        }
 }
 
+int ata_scsi_device_resume(struct scsi_device *sdev)
+{
+       struct ata_port *ap = (struct ata_port *) &sdev->host->hostdata[0];
+       struct ata_device *dev = &ap->device[sdev->id];
+
+       return ata_device_resume(ap, dev);
+}
+
+int ata_scsi_device_suspend(struct scsi_device *sdev)
+{
+       struct ata_port *ap = (struct ata_port *) &sdev->host->hostdata[0];
+       struct ata_device *dev = &ap->device[sdev->id];
+
+       return ata_device_suspend(ap, dev);
+}
+
 /**
  *     ata_to_sense_error - convert ATA error to SCSI error
  *     @id: ATA device number
@@ -418,7 +434,7 @@ void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk, u8 *asc,
        int i;
 
        /* Based on the 3ware driver translation table */
-       static unsigned char sense_table[][4] = {
+       static const unsigned char sense_table[][4] = {
                /* BBD|ECC|ID|MAR */
                {0xd1,          ABORTED_COMMAND, 0x00, 0x00},   // Device busy                  Aborted command
                /* BBD|ECC|ID */
@@ -449,7 +465,7 @@ void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk, u8 *asc,
                {0x80,          MEDIUM_ERROR, 0x11, 0x04},      // Block marked bad               Medium error, unrecovered read error
                {0xFF, 0xFF, 0xFF, 0xFF}, // END mark
        };
-       static unsigned char stat_table[][4] = {
+       static const unsigned char stat_table[][4] = {
                /* Must be first because BUSY means no other bits valid */
                {0x80,          ABORTED_COMMAND, 0x47, 0x00},   // Busy, fake parity for now
                {0x20,          HARDWARE_ERROR,  0x00, 0x00},   // Device fault
@@ -1080,11 +1096,13 @@ static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc, const u8 *scsicm
            scsicmd[0] == WRITE_16)
                tf->flags |= ATA_TFLAG_WRITE;
 
-       /* Calculate the SCSI LBA and transfer length. */
+       /* Calculate the SCSI LBA, transfer length and FUA. */
        switch (scsicmd[0]) {
        case READ_10:
        case WRITE_10:
                scsi_10_lba_len(scsicmd, &block, &n_block);
+               if (unlikely(scsicmd[1] & (1 << 3)))
+                       tf->flags |= ATA_TFLAG_FUA;
                break;
        case READ_6:
        case WRITE_6:
@@ -1099,6 +1117,8 @@ static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc, const u8 *scsicm
        case READ_16:
        case WRITE_16:
                scsi_16_lba_len(scsicmd, &block, &n_block);
+               if (unlikely(scsicmd[1] & (1 << 3)))
+                       tf->flags |= ATA_TFLAG_FUA;
                break;
        default:
                DPRINTK("no-byte command\n");
@@ -1142,7 +1162,8 @@ static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc, const u8 *scsicm
                        tf->device |= (block >> 24) & 0xf;
                }
 
-               ata_rwcmd_protocol(qc);
+               if (unlikely(ata_rwcmd_protocol(qc) < 0))
+                       goto invalid_fld;
 
                qc->nsect = n_block;
                tf->nsect = n_block & 0xff;
@@ -1160,7 +1181,8 @@ static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc, const u8 *scsicm
                if ((block >> 28) || (n_block > 256))
                        goto out_of_range;
 
-               ata_rwcmd_protocol(qc);
+               if (unlikely(ata_rwcmd_protocol(qc) < 0))
+                       goto invalid_fld;
 
                /* Convert LBA to CHS */
                track = (u32)block / dev->sectors;
@@ -1203,12 +1225,11 @@ nothing_to_do:
        return 1;
 }
 
-static int ata_scsi_qc_complete(struct ata_queued_cmd *qc,
-                               unsigned int err_mask)
+static int ata_scsi_qc_complete(struct ata_queued_cmd *qc)
 {
        struct scsi_cmnd *cmd = qc->scsicmd;
        u8 *cdb = cmd->cmnd;
-       int need_sense = (err_mask != 0);
+       int need_sense = (qc->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
@@ -1532,7 +1553,7 @@ unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf,
        return 0;
 }
 
-static const char *inq_83_str = "Linux ATA-SCSI simulator";
+static const char * const inq_83_str = "Linux ATA-SCSI simulator";
 
 /**
  *     ata_scsiop_inq_83 - Simulate INQUIRY EVPD page 83, device identity
@@ -1696,6 +1717,7 @@ static unsigned int ata_msense_rw_recovery(u8 **ptr_io, const u8 *last)
 unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf,
                                  unsigned int buflen)
 {
+       struct ata_device *dev = args->dev;
        u8 *scsicmd = args->cmd->cmnd, *p, *last;
        const u8 sat_blk_desc[] = {
                0, 0, 0, 0,     /* number of blocks: sat unspecified */
@@ -1704,6 +1726,7 @@ unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf,
        };
        u8 pg, spg;
        unsigned int ebd, page_control, six_byte, output_len, alloc_len, minlen;
+       u8 dpofua;
 
        VPRINTK("ENTER\n");
 
@@ -1772,9 +1795,17 @@ unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf,
 
        if (minlen < 1)
                return 0;
+
+       dpofua = 0;
+       if (ata_id_has_fua(args->id) && dev->flags & ATA_DFLAG_LBA48 &&
+           (!(dev->flags & ATA_DFLAG_PIO) || dev->multi_count))
+               dpofua = 1 << 4;
+
        if (six_byte) {
                output_len--;
                rbuf[0] = output_len;
+               if (minlen > 2)
+                       rbuf[2] |= dpofua;
                if (ebd) {
                        if (minlen > 3)
                                rbuf[3] = sizeof(sat_blk_desc);
@@ -1787,6 +1818,8 @@ unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf,
                rbuf[0] = output_len >> 8;
                if (minlen > 1)
                        rbuf[1] = output_len;
+               if (minlen > 3)
+                       rbuf[3] |= dpofua;
                if (ebd) {
                        if (minlen > 7)
                                rbuf[7] = sizeof(sat_blk_desc);
@@ -1955,9 +1988,9 @@ void ata_scsi_badcmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *), u8
        done(cmd);
 }
 
-static int atapi_sense_complete(struct ata_queued_cmd *qc,unsigned int err_mask)
+static int atapi_sense_complete(struct ata_queued_cmd *qc)
 {
-       if (err_mask && ((err_mask & AC_ERR_DEV) == 0))
+       if (qc->err_mask && ((qc->err_mask & AC_ERR_DEV) == 0))
                /* FIXME: not quite right; we don't want the
                 * translation of taskfile registers into
                 * a sense descriptors, since that's only
@@ -2015,15 +2048,18 @@ static void atapi_request_sense(struct ata_queued_cmd *qc)
 
        qc->complete_fn = atapi_sense_complete;
 
-       if (ata_qc_issue(qc))
-               ata_qc_complete(qc, AC_ERR_OTHER);
+       if (ata_qc_issue(qc)) {
+               qc->err_mask |= AC_ERR_OTHER;
+               ata_qc_complete(qc);
+       }
 
        DPRINTK("EXIT\n");
 }
 
-static int atapi_qc_complete(struct ata_queued_cmd *qc, unsigned int err_mask)
+static int atapi_qc_complete(struct ata_queued_cmd *qc)
 {
        struct scsi_cmnd *cmd = qc->scsicmd;
+       unsigned int err_mask = qc->err_mask;
 
        VPRINTK("ENTER, err_mask 0x%X\n", err_mask);
 
@@ -2444,7 +2480,7 @@ int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
                if (xlat_func)
                        ata_scsi_translate(ap, dev, cmd, done, xlat_func);
                else
-                       ata_scsi_simulate(dev->id, cmd, done);
+                       ata_scsi_simulate(ap, dev, cmd, done);
        } else
                ata_scsi_translate(ap, dev, cmd, done, atapi_xlat);
 
@@ -2467,14 +2503,16 @@ out_unlock:
  *     spin_lock_irqsave(host_set lock)
  */
 
-void ata_scsi_simulate(u16 *id,
+void ata_scsi_simulate(struct ata_port *ap, struct ata_device *dev,
                      struct scsi_cmnd *cmd,
                      void (*done)(struct scsi_cmnd *))
 {
        struct ata_scsi_args args;
        const u8 *scsicmd = cmd->cmnd;
 
-       args.id = id;
+       args.ap = ap;
+       args.dev = dev;
+       args.id = dev->id;
        args.cmd = cmd;
        args.done = done;