sata_mv ncq Enable NCQ operation
Final changes to actually turn on NCQ in the driver for GEN_II/IIE hardware. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
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@ -510,7 +510,8 @@ static struct scsi_host_template mv6_sht = {
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.name = DRV_NAME,
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.ioctl = ata_scsi_ioctl,
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.queuecommand = ata_scsi_queuecmd,
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.can_queue = ATA_DEF_QUEUE,
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.change_queue_depth = ata_scsi_change_queue_depth,
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.can_queue = MV_MAX_Q_DEPTH - 1,
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.this_id = ATA_SHT_THIS_ID,
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.sg_tablesize = MV_MAX_SG_CT / 2,
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.cmd_per_lun = ATA_SHT_CMD_PER_LUN,
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@ -572,6 +573,7 @@ static const struct ata_port_operations mv6_ops = {
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.post_internal_cmd = mv_post_int_cmd,
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.freeze = mv_eh_freeze,
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.thaw = mv_eh_thaw,
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.qc_defer = ata_std_qc_defer,
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.scr_read = mv_scr_read,
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.scr_write = mv_scr_write,
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@ -600,6 +602,7 @@ static const struct ata_port_operations mv_iie_ops = {
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.post_internal_cmd = mv_post_int_cmd,
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.freeze = mv_eh_freeze,
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.thaw = mv_eh_thaw,
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.qc_defer = ata_std_qc_defer,
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.scr_read = mv_scr_read,
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.scr_write = mv_scr_write,
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@ -628,26 +631,29 @@ static const struct ata_port_info mv_port_info[] = {
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.port_ops = &mv5_ops,
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},
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{ /* chip_604x */
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.flags = MV_COMMON_FLAGS | MV_6XXX_FLAGS,
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.flags = MV_COMMON_FLAGS | MV_6XXX_FLAGS |
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ATA_FLAG_NCQ,
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.pio_mask = 0x1f, /* pio0-4 */
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.udma_mask = ATA_UDMA6,
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.port_ops = &mv6_ops,
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},
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{ /* chip_608x */
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.flags = MV_COMMON_FLAGS | MV_6XXX_FLAGS |
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MV_FLAG_DUAL_HC,
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ATA_FLAG_NCQ | MV_FLAG_DUAL_HC,
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.pio_mask = 0x1f, /* pio0-4 */
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.udma_mask = ATA_UDMA6,
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.port_ops = &mv6_ops,
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},
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{ /* chip_6042 */
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.flags = MV_COMMON_FLAGS | MV_6XXX_FLAGS,
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.flags = MV_COMMON_FLAGS | MV_6XXX_FLAGS |
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ATA_FLAG_NCQ,
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.pio_mask = 0x1f, /* pio0-4 */
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.udma_mask = ATA_UDMA6,
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.port_ops = &mv_iie_ops,
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},
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{ /* chip_7042 */
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.flags = MV_COMMON_FLAGS | MV_6XXX_FLAGS,
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.flags = MV_COMMON_FLAGS | MV_6XXX_FLAGS |
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ATA_FLAG_NCQ,
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.pio_mask = 0x1f, /* pio0-4 */
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.udma_mask = ATA_UDMA6,
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.port_ops = &mv_iie_ops,
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@ -1295,7 +1301,8 @@ static void mv_qc_prep(struct ata_queued_cmd *qc)
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u16 flags = 0;
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unsigned in_index;
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if (qc->tf.protocol != ATA_PROT_DMA)
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if ((qc->tf.protocol != ATA_PROT_DMA) &&
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(qc->tf.protocol != ATA_PROT_NCQ))
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return;
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/* Fill in command request block
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@ -1331,13 +1338,11 @@ static void mv_qc_prep(struct ata_queued_cmd *qc)
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case ATA_CMD_WRITE_FUA_EXT:
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mv_crqb_pack_cmd(cw++, tf->hob_nsect, ATA_REG_NSECT, 0);
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break;
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#ifdef LIBATA_NCQ /* FIXME: remove this line when NCQ added */
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case ATA_CMD_FPDMA_READ:
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case ATA_CMD_FPDMA_WRITE:
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mv_crqb_pack_cmd(cw++, tf->hob_feature, ATA_REG_FEATURE, 0);
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mv_crqb_pack_cmd(cw++, tf->feature, ATA_REG_FEATURE, 0);
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break;
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#endif /* FIXME: remove this line when NCQ added */
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default:
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/* The only other commands EDMA supports in non-queued and
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* non-NCQ mode are: [RW] STREAM DMA and W DMA FUA EXT, none
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@ -1386,7 +1391,8 @@ static void mv_qc_prep_iie(struct ata_queued_cmd *qc)
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unsigned in_index;
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u32 flags = 0;
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if (qc->tf.protocol != ATA_PROT_DMA)
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if ((qc->tf.protocol != ATA_PROT_DMA) &&
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(qc->tf.protocol != ATA_PROT_NCQ))
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return;
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/* Fill in Gen IIE command request block
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@ -1452,7 +1458,8 @@ static unsigned int mv_qc_issue(struct ata_queued_cmd *qc)
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struct mv_port_priv *pp = ap->private_data;
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u32 in_index;
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if (qc->tf.protocol != ATA_PROT_DMA) {
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if ((qc->tf.protocol != ATA_PROT_DMA) &&
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(qc->tf.protocol != ATA_PROT_NCQ)) {
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/* We're about to send a non-EDMA capable command to the
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* port. Turn off EDMA so there won't be problems accessing
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* shadow block, etc registers.
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@ -1463,12 +1470,6 @@ static unsigned int mv_qc_issue(struct ata_queued_cmd *qc)
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mv_start_dma(ap, port_mmio, pp, qc->tf.protocol);
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in_index = pp->req_idx & MV_MAX_Q_DEPTH_MASK;
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/* until we do queuing, the queue should be empty at this point */
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WARN_ON(in_index != ((readl(port_mmio + EDMA_REQ_Q_OUT_PTR_OFS)
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>> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK));
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pp->req_idx++;
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in_index = (pp->req_idx & MV_MAX_Q_DEPTH_MASK) << EDMA_REQ_Q_PTR_SHIFT;
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