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path: root/drivers/scsi/ibmvscsi/ibmvscsi.c
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Diffstat (limited to 'drivers/scsi/ibmvscsi/ibmvscsi.c')
-rw-r--r--drivers/scsi/ibmvscsi/ibmvscsi.c49
1 files changed, 22 insertions, 27 deletions
diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.c b/drivers/scsi/ibmvscsi/ibmvscsi.c
index e3a18e0ef276..88bad0e81bdd 100644
--- a/drivers/scsi/ibmvscsi/ibmvscsi.c
+++ b/drivers/scsi/ibmvscsi/ibmvscsi.c
@@ -70,7 +70,9 @@
#include <linux/moduleparam.h>
#include <linux/dma-mapping.h>
#include <linux/delay.h>
+#include <linux/slab.h>
#include <linux/of.h>
+#include <linux/pm.h>
#include <asm/firmware.h>
#include <asm/vio.h>
#include <scsi/scsi.h>
@@ -321,16 +323,6 @@ static void set_srp_direction(struct scsi_cmnd *cmd,
srp_cmd->buf_fmt = fmt;
}
-static void unmap_sg_list(int num_entries,
- struct device *dev,
- struct srp_direct_buf *md)
-{
- int i;
-
- for (i = 0; i < num_entries; ++i)
- dma_unmap_single(dev, md[i].va, md[i].len, DMA_BIDIRECTIONAL);
-}
-
/**
* unmap_cmd_data: - Unmap data pointed in srp_cmd based on the format
* @cmd: srp_cmd whose additional_data member will be unmapped
@@ -348,24 +340,9 @@ static void unmap_cmd_data(struct srp_cmd *cmd,
if (out_fmt == SRP_NO_DATA_DESC && in_fmt == SRP_NO_DATA_DESC)
return;
- else if (out_fmt == SRP_DATA_DESC_DIRECT ||
- in_fmt == SRP_DATA_DESC_DIRECT) {
- struct srp_direct_buf *data =
- (struct srp_direct_buf *) cmd->add_data;
- dma_unmap_single(dev, data->va, data->len, DMA_BIDIRECTIONAL);
- } else {
- struct srp_indirect_buf *indirect =
- (struct srp_indirect_buf *) cmd->add_data;
- int num_mapped = indirect->table_desc.len /
- sizeof(struct srp_direct_buf);
-
- if (num_mapped <= MAX_INDIRECT_BUFS) {
- unmap_sg_list(num_mapped, dev, &indirect->desc_list[0]);
- return;
- }
- unmap_sg_list(num_mapped, dev, evt_struct->ext_list);
- }
+ if (evt_struct->cmnd)
+ scsi_dma_unmap(evt_struct->cmnd);
}
static int map_sg_list(struct scsi_cmnd *cmd, int nseg,
@@ -1991,6 +1968,19 @@ static int ibmvscsi_remove(struct vio_dev *vdev)
}
/**
+ * ibmvscsi_resume: Resume from suspend
+ * @dev: device struct
+ *
+ * We may have lost an interrupt across suspend/resume, so kick the
+ * interrupt handler
+ */
+static int ibmvscsi_resume(struct device *dev)
+{
+ struct ibmvscsi_host_data *hostdata = dev_get_drvdata(dev);
+ return ibmvscsi_ops->resume(hostdata);
+}
+
+/**
* ibmvscsi_device_table: Used by vio.c to match devices in the device tree we
* support.
*/
@@ -2000,6 +1990,10 @@ static struct vio_device_id ibmvscsi_device_table[] __devinitdata = {
};
MODULE_DEVICE_TABLE(vio, ibmvscsi_device_table);
+static struct dev_pm_ops ibmvscsi_pm_ops = {
+ .resume = ibmvscsi_resume
+};
+
static struct vio_driver ibmvscsi_driver = {
.id_table = ibmvscsi_device_table,
.probe = ibmvscsi_probe,
@@ -2008,6 +2002,7 @@ static struct vio_driver ibmvscsi_driver = {
.driver = {
.name = "ibmvscsi",
.owner = THIS_MODULE,
+ .pm = &ibmvscsi_pm_ops,
}
};