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@@ -43,6 +43,7 @@
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#include <scsi/scsi_cmnd.h>
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#include <scsi/scsi_device.h>
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#include <scsi/scsi_host.h>
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+#include <scsi/scsi_tcq.h>
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#include <linux/cciss_ioctl.h>
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#include <linux/string.h>
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#include <linux/bitmap.h>
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@@ -134,6 +135,8 @@ static int hpsa_scsi_queue_command(struct scsi_cmnd *cmd,
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static void hpsa_scan_start(struct Scsi_Host *);
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static int hpsa_scan_finished(struct Scsi_Host *sh,
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unsigned long elapsed_time);
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+static int hpsa_change_queue_depth(struct scsi_device *sdev,
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+ int qdepth, int reason);
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static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd);
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static int hpsa_slave_alloc(struct scsi_device *sdev);
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@@ -182,6 +185,7 @@ static struct scsi_host_template hpsa_driver_template = {
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.queuecommand = hpsa_scsi_queue_command,
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.scan_start = hpsa_scan_start,
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.scan_finished = hpsa_scan_finished,
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+ .change_queue_depth = hpsa_change_queue_depth,
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.this_id = -1,
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.sg_tablesize = MAXSGENTRIES,
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.use_clustering = ENABLE_CLUSTERING,
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@@ -2077,6 +2081,23 @@ static int hpsa_scan_finished(struct Scsi_Host *sh,
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return finished;
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}
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+static int hpsa_change_queue_depth(struct scsi_device *sdev,
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+ int qdepth, int reason)
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+{
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+ struct ctlr_info *h = sdev_to_hba(sdev);
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+
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+ if (reason != SCSI_QDEPTH_DEFAULT)
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+ return -ENOTSUPP;
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+
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+ if (qdepth < 1)
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+ qdepth = 1;
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+ else
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+ if (qdepth > h->nr_cmds)
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+ qdepth = h->nr_cmds;
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+ scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
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+ return sdev->queue_depth;
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+}
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+
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static void hpsa_unregister_scsi(struct ctlr_info *h)
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{
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/* we are being forcibly unloaded, and may not refuse. */
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Stephen M. Cameron