dmaengine: idxd: move wq_disable() to device.c

Move the wq_disable() function to device.c in preparation of setting up the
idxd internal sub-driver framework. No logic changes.

Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/162637461775.744545.9644048686618957886.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/idxd/device.c b/drivers/dma/idxd/device.c
index b1c509bcfa31c5ac8ebf22619207956ca3f68243..8d8e249931a98046c7fe304a1052670435ce83c9 100644 (file)
--- a/drivers/dma/idxd/device.c
+++ b/drivers/dma/idxd/device.c
@@ -1253,3 +1253,40 @@ int drv_enable_wq(struct idxd_wq *wq)
        mutex_unlock(&wq->wq_lock);
        return rc;
 }
+
+static void __drv_disable_wq(struct idxd_wq *wq)
+{
+       struct idxd_device *idxd = wq->idxd;
+       struct device *dev = &idxd->pdev->dev;
+
+       lockdep_assert_held(&wq->wq_lock);
+
+       if (wq->type == IDXD_WQT_KERNEL)
+               idxd_wq_quiesce(wq);
+
+       if (is_idxd_wq_dmaengine(wq))
+               idxd_unregister_dma_channel(wq);
+       else if (is_idxd_wq_cdev(wq))
+               idxd_wq_del_cdev(wq);
+
+       if (idxd_wq_refcount(wq))
+               dev_warn(dev, "Clients has claim on wq %d: %d\n",
+                        wq->id, idxd_wq_refcount(wq));
+
+       idxd_wq_unmap_portal(wq);
+
+       idxd_wq_drain(wq);
+       idxd_wq_reset(wq);
+
+       idxd_wq_free_resources(wq);
+       wq->client_count = 0;
+
+       dev_info(dev, "wq %s disabled\n", dev_name(wq_confdev(wq)));
+}
+
+void drv_disable_wq(struct idxd_wq *wq)
+{
+       mutex_lock(&wq->wq_lock);
+       __drv_disable_wq(wq);
+       mutex_unlock(&wq->wq_lock);
+}

diff --git a/drivers/dma/idxd/idxd.h b/drivers/dma/idxd/idxd.h
index 551a61fa1aff123da65d1b0cb85358eeb3c48bc5..e96ddbfc4569c03e5faa11644d352a40e1db6857 100644 (file)
--- a/drivers/dma/idxd/idxd.h
+++ b/drivers/dma/idxd/idxd.h
@@ -496,6 +496,7 @@ void idxd_unmask_msix_vector(struct idxd_device *idxd, int vec_id);
 
 /* device control */
 int drv_enable_wq(struct idxd_wq *wq);
+void drv_disable_wq(struct idxd_wq *wq);
 int idxd_device_init_reset(struct idxd_device *idxd);
 int idxd_device_enable(struct idxd_device *idxd);
 int idxd_device_disable(struct idxd_device *idxd);

diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c
index 3e8cc07ebcdc37a95795d97668a07e2c6c3abc02..9967fad58a0175efafcb66f8cae970ea5ab2c928 100644 (file)
--- a/drivers/dma/idxd/sysfs.c
+++ b/drivers/dma/idxd/sysfs.c
@@ -89,42 +89,6 @@ static int idxd_config_bus_probe(struct device *dev)
        return -ENODEV;
 }
 
-static void disable_wq(struct idxd_wq *wq)
-{
-       struct idxd_device *idxd = wq->idxd;
-       struct device *dev = &idxd->pdev->dev;
-
-       mutex_lock(&wq->wq_lock);
-       dev_dbg(dev, "%s removing WQ %s\n", __func__, dev_name(wq_confdev(wq)));
-       if (wq->state == IDXD_WQ_DISABLED) {
-               mutex_unlock(&wq->wq_lock);
-               return;
-       }
-
-       if (wq->type == IDXD_WQT_KERNEL)
-               idxd_wq_quiesce(wq);
-
-       if (is_idxd_wq_dmaengine(wq))
-               idxd_unregister_dma_channel(wq);
-       else if (is_idxd_wq_cdev(wq))
-               idxd_wq_del_cdev(wq);
-
-       if (idxd_wq_refcount(wq))
-               dev_warn(dev, "Clients has claim on wq %d: %d\n",
-                        wq->id, idxd_wq_refcount(wq));
-
-       idxd_wq_unmap_portal(wq);
-
-       idxd_wq_drain(wq);
-       idxd_wq_reset(wq);
-
-       idxd_wq_free_resources(wq);
-       wq->client_count = 0;
-       mutex_unlock(&wq->wq_lock);
-
-       dev_info(dev, "wq %s disabled\n", dev_name(wq_confdev(wq)));
-}
-
 static int idxd_config_bus_remove(struct device *dev)
 {
        dev_dbg(dev, "%s called for %s\n", __func__, dev_name(dev));
@@ -133,7 +97,7 @@ static int idxd_config_bus_remove(struct device *dev)
        if (is_idxd_wq_dev(dev)) {
                struct idxd_wq *wq = confdev_to_wq(dev);
 
-               disable_wq(wq);
+               drv_disable_wq(wq);
        } else if (is_idxd_dev(dev)) {
                struct idxd_device *idxd = confdev_to_idxd(dev);
                int i;