search for: dma_area

...a/drivers/s390/cio/ccwreq.c +++ b/drivers/s390/cio/ccwreq.c @@ -63,7 +63,7 @@ static void ccwreq_stop(struct ccw_device *cdev, int rc) return; req->done = 1; ccw_device_set_timeout(cdev, 0); - memset(&cdev->private->irb, 0, sizeof(struct irb)); + memset(&cdev->private->dma_area->irb, 0, sizeof(struct irb)); if (rc && rc != -ENODEV && req->drc) rc = req->drc; req->callback(cdev, req->data, rc); @@ -86,7 +86,7 @@ static void ccwreq_do(struct ccw_device *cdev) continue; } /* Perform start function. */ - memset(&cdev->pr...

...a/drivers/s390/cio/ccwreq.c +++ b/drivers/s390/cio/ccwreq.c @@ -63,7 +63,7 @@ static void ccwreq_stop(struct ccw_device *cdev, int rc) return; req->done = 1; ccw_device_set_timeout(cdev, 0); - memset(&cdev->private->irb, 0, sizeof(struct irb)); + memset(&cdev->private->dma_area->irb, 0, sizeof(struct irb)); if (rc && rc != -ENODEV && req->drc) rc = req->drc; req->callback(cdev, req->data, rc); @@ -86,7 +86,7 @@ static void ccwreq_do(struct ccw_device *cdev) continue; } /* Perform start function. */ - memset(&cdev->pr...

...a/drivers/s390/cio/ccwreq.c +++ b/drivers/s390/cio/ccwreq.c @@ -63,7 +63,7 @@ static void ccwreq_stop(struct ccw_device *cdev, int rc) return; req->done = 1; ccw_device_set_timeout(cdev, 0); - memset(&cdev->private->irb, 0, sizeof(struct irb)); + memset(&cdev->private->dma_area->irb, 0, sizeof(struct irb)); if (rc && rc != -ENODEV && req->drc) rc = req->drc; req->callback(cdev, req->data, rc); @@ -86,7 +86,7 @@ static void ccwreq_do(struct ccw_device *cdev) continue; } /* Perform start function. */ - memset(&cdev->pr...

...a/drivers/s390/cio/ccwreq.c +++ b/drivers/s390/cio/ccwreq.c @@ -63,7 +63,7 @@ static void ccwreq_stop(struct ccw_device *cdev, int rc) return; req->done = 1; ccw_device_set_timeout(cdev, 0); - memset(&cdev->private->irb, 0, sizeof(struct irb)); + memset(&cdev->private->dma_area->irb, 0, sizeof(struct irb)); if (rc && rc != -ENODEV && req->drc) rc = req->drc; req->callback(cdev, req->data, rc); @@ -86,7 +86,7 @@ static void ccwreq_do(struct ccw_device *cdev) continue; } /* Perform start function. */ - memset(&cdev->pr...

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV

...virtio_ccw.c index e96a8cc56ec2..e5e10aa54aa1 100644 --- a/drivers/s390/virtio/virtio_ccw.c +++ b/drivers/s390/virtio/virtio_ccw.c @@ -46,9 +46,15 @@ struct vq_config_block { #define VIRTIO_CCW_CONFIG_SIZE 0x100 /* same as PCI config space size, should be enough for all drivers */ +struct vcdev_dma_area { + unsigned long indicators; + unsigned long indicators2; + struct vq_config_block config_block; + __u8 status; +}; + struct virtio_ccw_device { struct virtio_device vdev; - __u8 *status; __u8 config[VIRTIO_CCW_CONFIG_SIZE]; struct ccw_device *cdev; __u32 curr_io; @@ -58,24 +64,22 @@ stru...

...virtio_ccw.c index e96a8cc56ec2..800252955a2f 100644 --- a/drivers/s390/virtio/virtio_ccw.c +++ b/drivers/s390/virtio/virtio_ccw.c @@ -46,9 +46,15 @@ struct vq_config_block { #define VIRTIO_CCW_CONFIG_SIZE 0x100 /* same as PCI config space size, should be enough for all drivers */ +struct vcdev_dma_area { + unsigned long indicators; + unsigned long indicators2; + struct vq_config_block config_block; + __u8 status; +}; + struct virtio_ccw_device { struct virtio_device vdev; - __u8 *status; __u8 config[VIRTIO_CCW_CONFIG_SIZE]; struct ccw_device *cdev; __u32 curr_io; @@ -58,24 +64,22 @@ stru...

...onsole(struct ccw_driver *drv) > return ERR_CAST(sch); > > io_priv = kzalloc(sizeof(*io_priv), GFP_KERNEL | GFP_DMA); > - if (!io_priv) { > - put_device(&sch->dev); > - return ERR_PTR(-ENOMEM); > - } > + if (!io_priv) > + goto err_priv; > + io_priv->dma_area = dma_alloc_coherent(&sch->dev, > + sizeof(*io_priv->dma_area), > + &io_priv->dma_area_dma, GFP_KERNEL); > + if (!io_priv->dma_area) > + goto err_dma_area; > set_io_private(sch, io_priv); > cdev = io_subchannel_create_ccwdev(sch); > if (IS_ERR(c...

...onsole(struct ccw_driver *drv) > return ERR_CAST(sch); > > io_priv = kzalloc(sizeof(*io_priv), GFP_KERNEL | GFP_DMA); > - if (!io_priv) { > - put_device(&sch->dev); > - return ERR_PTR(-ENOMEM); > - } > + if (!io_priv) > + goto err_priv; > + io_priv->dma_area = dma_alloc_coherent(&sch->dev, > + sizeof(*io_priv->dma_area), > + &io_priv->dma_area_dma, GFP_KERNEL); > + if (!io_priv->dma_area) > + goto err_dma_area; > set_io_private(sch, io_priv); > cdev = io_subchannel_create_ccwdev(sch); > if (IS_ERR(c...

...virtio_ccw.c index 1f3e7d56924f..613b18001a0c 100644 --- a/drivers/s390/virtio/virtio_ccw.c +++ b/drivers/s390/virtio/virtio_ccw.c @@ -46,9 +46,15 @@ struct vq_config_block { #define VIRTIO_CCW_CONFIG_SIZE 0x100 /* same as PCI config space size, should be enough for all drivers */ +struct vcdev_dma_area { + unsigned long indicators; + unsigned long indicators2; + struct vq_config_block config_block; + __u8 status; +}; + struct virtio_ccw_device { struct virtio_device vdev; - __u8 *status; __u8 config[VIRTIO_CCW_CONFIG_SIZE]; struct ccw_device *cdev; __u32 curr_io; @@ -58,24 +64,22 @@ stru...

...>> io_priv = kzalloc(sizeof(*io_priv), GFP_KERNEL | GFP_DMA); > >> - if (!io_priv) { > >> - put_device(&sch->dev); > >> - return ERR_PTR(-ENOMEM); > >> - } > >> + if (!io_priv) > >> + goto err_priv; > >> + io_priv->dma_area = dma_alloc_coherent(&sch->dev, > >> + sizeof(*io_priv->dma_area), > >> + &io_priv->dma_area_dma, GFP_KERNEL); > >> + if (!io_priv->dma_area) > >> + goto err_dma_area; > >> set_io_private(sch, io_priv); > >> cdev...

...Apr 2019, Halil Pasic wrote: > static struct ccw_device * io_subchannel_allocate_dev(struct subchannel *sch) > { [..] > + cdev->private = kzalloc(sizeof(struct ccw_device_private), > + GFP_KERNEL | GFP_DMA); Do we still need GFP_DMA here (since we now have cdev->private->dma_area)? > @@ -1062,6 +1082,14 @@ static int io_subchannel_probe(struct subchannel *sch) > if (!io_priv) > goto out_schedule; > > + io_priv->dma_area = dma_alloc_coherent(&sch->dev, > + sizeof(*io_priv->dma_area), > + &io_priv->dma_area_dma, GFP_KERNE...

...Apr 2019, Halil Pasic wrote: > static struct ccw_device * io_subchannel_allocate_dev(struct subchannel *sch) > { [..] > + cdev->private = kzalloc(sizeof(struct ccw_device_private), > + GFP_KERNEL | GFP_DMA); Do we still need GFP_DMA here (since we now have cdev->private->dma_area)? > @@ -1062,6 +1082,14 @@ static int io_subchannel_probe(struct subchannel *sch) > if (!io_priv) > goto out_schedule; > > + io_priv->dma_area = dma_alloc_coherent(&sch->dev, > + sizeof(*io_priv->dma_area), > + &io_priv->dma_area_dma, GFP_KERNE...