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authorChristian Borntraeger <borntraeger@de.ibm.com>2016-02-02 21:46:34 -0800
committerMichael S. Tsirkin <mst@redhat.com>2016-03-02 17:01:56 +0200
commite82becfc1879a43aa29492ae90ea6eb6c68b60fc (patch)
tree58a5bb902a9ee27cf0a4242ba3fcdf86fa60a315 /arch/s390/pci
parent6aca0503847f6329460b15b3ab2b0e30bb752793 (diff)
downloadlinux-e82becfc1879a43aa29492ae90ea6eb6c68b60fc.tar.bz2
s390/dma: Allow per device dma ops
As virtio-ccw will have dma ops, we can no longer default to the zPCI ones. Make use of dev_archdata to keep the dma_ops per device. The pci devices now use that to override the default, and the default is changed to use the noop ops for everything that does not specify a device specific one. To compile without PCI support we will enable HAS_DMA all the time, via the default config in lib/Kconfig. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Joerg Roedel <jroedel@suse.de> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Acked-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'arch/s390/pci')
-rw-r--r--arch/s390/pci/pci.c1
-rw-r--r--arch/s390/pci/pci_dma.c4
2 files changed, 3 insertions, 2 deletions
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index 8f19c8f9d660..b63265a7f178 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -643,6 +643,7 @@ int pcibios_add_device(struct pci_dev *pdev)
zdev->pdev = pdev;
pdev->dev.groups = zpci_attr_groups;
+ pdev->dev.archdata.dma_ops = &s390_pci_dma_ops;
zpci_map_resources(pdev);
for (i = 0; i < PCI_BAR_COUNT; i++) {
diff --git a/arch/s390/pci/pci_dma.c b/arch/s390/pci/pci_dma.c
index 4638b93c7632..a79173ec54b9 100644
--- a/arch/s390/pci/pci_dma.c
+++ b/arch/s390/pci/pci_dma.c
@@ -544,7 +544,7 @@ static int __init dma_debug_do_init(void)
}
fs_initcall(dma_debug_do_init);
-struct dma_map_ops s390_dma_ops = {
+struct dma_map_ops s390_pci_dma_ops = {
.alloc = s390_dma_alloc,
.free = s390_dma_free,
.map_sg = s390_dma_map_sg,
@@ -555,7 +555,7 @@ struct dma_map_ops s390_dma_ops = {
.is_phys = 0,
/* dma_supported is unconditionally true without a callback */
};
-EXPORT_SYMBOL_GPL(s390_dma_ops);
+EXPORT_SYMBOL_GPL(s390_pci_dma_ops);
static int __init s390_iommu_setup(char *str)
{