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authorLinus Torvalds <torvalds@linux-foundation.org>2014-12-18 20:50:30 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2014-12-18 20:50:30 -0800
commit64ec45bff6b3dade2643ed4c0f688a15ecf46ea2 (patch)
tree29816f500d80a64c84455778918d94ff3ddf02e4 /drivers/virtio
parentc0f486fde3f353232c1cc2fd4d62783ac782a467 (diff)
parent5ff16110c637726111662c1df41afd9df7ef36bd (diff)
downloadop-kernel-dev-64ec45bff6b3dade2643ed4c0f688a15ecf46ea2.zip
op-kernel-dev-64ec45bff6b3dade2643ed4c0f688a15ecf46ea2.tar.gz
Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Pull virtio fixes from Michael S Tsirkin: "virtio 1.0 related fixes Most importantly, this fixes using virtio_pci as a module. Further, the big virtio 1.0 conversion missed a couple of places. This fixes them up. This isn't 100% sparse-clean yet because on many architectures get_user triggers sparse warnings when used with __bitwise tag (when same tag is on both pointer and value read). I posted a patchset to fix it up by adding __force on all arches that don't already have it (many do), when that's merged these warnings will go away" * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: virtio_pci: restore module attributes mic/host: fix up virtio 1.0 APIs vringh: update for virtio 1.0 APIs vringh: 64 bit features tools/virtio: add virtio 1.0 in vringh_test tools/virtio: add virtio 1.0 in virtio_test tools/virtio: enable -Werror tools/virtio: 64 bit features tools/virtio: fix vringh test tools/virtio: more stubs virtio: core support for config generation virtio_pci: add VIRTIO_PCI_NO_LEGACY virtio_pci: move probe to common file virtio_pci_common.h: drop VIRTIO_PCI_NO_LEGACY virtio_config: fix virtio_cread_bytes virtio: set VIRTIO_CONFIG_S_FEATURES_OK on restore
Diffstat (limited to 'drivers/virtio')
-rw-r--r--drivers/virtio/virtio.c37
-rw-r--r--drivers/virtio/virtio_pci_common.c39
-rw-r--r--drivers/virtio/virtio_pci_common.h7
-rw-r--r--drivers/virtio/virtio_pci_legacy.c24
4 files changed, 66 insertions, 41 deletions
diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c
index f226658..b9f70df 100644
--- a/drivers/virtio/virtio.c
+++ b/drivers/virtio/virtio.c
@@ -162,6 +162,27 @@ static void virtio_config_enable(struct virtio_device *dev)
spin_unlock_irq(&dev->config_lock);
}
+static int virtio_finalize_features(struct virtio_device *dev)
+{
+ int ret = dev->config->finalize_features(dev);
+ unsigned status;
+
+ if (ret)
+ return ret;
+
+ if (!virtio_has_feature(dev, VIRTIO_F_VERSION_1))
+ return 0;
+
+ add_status(dev, VIRTIO_CONFIG_S_FEATURES_OK);
+ status = dev->config->get_status(dev);
+ if (!(status & VIRTIO_CONFIG_S_FEATURES_OK)) {
+ dev_err(&dev->dev, "virtio: device refuses features: %x\n",
+ status);
+ return -ENODEV;
+ }
+ return 0;
+}
+
static int virtio_dev_probe(struct device *_d)
{
int err, i;
@@ -170,7 +191,6 @@ static int virtio_dev_probe(struct device *_d)
u64 device_features;
u64 driver_features;
u64 driver_features_legacy;
- unsigned status;
/* We have a driver! */
add_status(dev, VIRTIO_CONFIG_S_DRIVER);
@@ -208,21 +228,10 @@ static int virtio_dev_probe(struct device *_d)
if (device_features & (1ULL << i))
__virtio_set_bit(dev, i);
- err = dev->config->finalize_features(dev);
+ err = virtio_finalize_features(dev);
if (err)
goto err;
- if (virtio_has_feature(dev, VIRTIO_F_VERSION_1)) {
- add_status(dev, VIRTIO_CONFIG_S_FEATURES_OK);
- status = dev->config->get_status(dev);
- if (!(status & VIRTIO_CONFIG_S_FEATURES_OK)) {
- dev_err(_d, "virtio: device refuses features: %x\n",
- status);
- err = -ENODEV;
- goto err;
- }
- }
-
err = drv->probe(dev);
if (err)
goto err;
@@ -372,7 +381,7 @@ int virtio_device_restore(struct virtio_device *dev)
/* We have a driver! */
add_status(dev, VIRTIO_CONFIG_S_DRIVER);
- ret = dev->config->finalize_features(dev);
+ ret = virtio_finalize_features(dev);
if (ret)
goto err;
diff --git a/drivers/virtio/virtio_pci_common.c b/drivers/virtio/virtio_pci_common.c
index 953057d..2ef9529 100644
--- a/drivers/virtio/virtio_pci_common.c
+++ b/drivers/virtio/virtio_pci_common.c
@@ -458,7 +458,44 @@ static int virtio_pci_restore(struct device *dev)
return virtio_device_restore(&vp_dev->vdev);
}
-const struct dev_pm_ops virtio_pci_pm_ops = {
+static const struct dev_pm_ops virtio_pci_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(virtio_pci_freeze, virtio_pci_restore)
};
#endif
+
+
+/* Qumranet donated their vendor ID for devices 0x1000 thru 0x10FF. */
+static const struct pci_device_id virtio_pci_id_table[] = {
+ { PCI_DEVICE(0x1af4, PCI_ANY_ID) },
+ { 0 }
+};
+
+MODULE_DEVICE_TABLE(pci, virtio_pci_id_table);
+
+static int virtio_pci_probe(struct pci_dev *pci_dev,
+ const struct pci_device_id *id)
+{
+ return virtio_pci_legacy_probe(pci_dev, id);
+}
+
+static void virtio_pci_remove(struct pci_dev *pci_dev)
+{
+ virtio_pci_legacy_remove(pci_dev);
+}
+
+static struct pci_driver virtio_pci_driver = {
+ .name = "virtio-pci",
+ .id_table = virtio_pci_id_table,
+ .probe = virtio_pci_probe,
+ .remove = virtio_pci_remove,
+#ifdef CONFIG_PM_SLEEP
+ .driver.pm = &virtio_pci_pm_ops,
+#endif
+};
+
+module_pci_driver(virtio_pci_driver);
+
+MODULE_AUTHOR("Anthony Liguori <aliguori@us.ibm.com>");
+MODULE_DESCRIPTION("virtio-pci");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("1");
diff --git a/drivers/virtio/virtio_pci_common.h b/drivers/virtio/virtio_pci_common.h
index d840dad..adddb64 100644
--- a/drivers/virtio/virtio_pci_common.h
+++ b/drivers/virtio/virtio_pci_common.h
@@ -27,7 +27,6 @@
#include <linux/virtio.h>
#include <linux/virtio_config.h>
#include <linux/virtio_ring.h>
-#define VIRTIO_PCI_NO_LEGACY
#include <linux/virtio_pci.h>
#include <linux/highmem.h>
#include <linux/spinlock.h>
@@ -129,8 +128,8 @@ const char *vp_bus_name(struct virtio_device *vdev);
int vp_set_vq_affinity(struct virtqueue *vq, int cpu);
void virtio_pci_release_dev(struct device *);
-#ifdef CONFIG_PM_SLEEP
-extern const struct dev_pm_ops virtio_pci_pm_ops;
-#endif
+int virtio_pci_legacy_probe(struct pci_dev *pci_dev,
+ const struct pci_device_id *id);
+void virtio_pci_legacy_remove(struct pci_dev *pci_dev);
#endif
diff --git a/drivers/virtio/virtio_pci_legacy.c b/drivers/virtio/virtio_pci_legacy.c
index 2588252..6c76f0f 100644
--- a/drivers/virtio/virtio_pci_legacy.c
+++ b/drivers/virtio/virtio_pci_legacy.c
@@ -19,14 +19,6 @@
#include "virtio_pci_common.h"
-/* Qumranet donated their vendor ID for devices 0x1000 thru 0x10FF. */
-static const struct pci_device_id virtio_pci_id_table[] = {
- { PCI_DEVICE(0x1af4, PCI_ANY_ID) },
- { 0 }
-};
-
-MODULE_DEVICE_TABLE(pci, virtio_pci_id_table);
-
/* virtio config->get_features() implementation */
static u64 vp_get_features(struct virtio_device *vdev)
{
@@ -220,7 +212,7 @@ static const struct virtio_config_ops virtio_pci_config_ops = {
};
/* the PCI probing function */
-static int virtio_pci_probe(struct pci_dev *pci_dev,
+int virtio_pci_legacy_probe(struct pci_dev *pci_dev,
const struct pci_device_id *id)
{
struct virtio_pci_device *vp_dev;
@@ -300,7 +292,7 @@ out:
return err;
}
-static void virtio_pci_remove(struct pci_dev *pci_dev)
+void virtio_pci_legacy_remove(struct pci_dev *pci_dev)
{
struct virtio_pci_device *vp_dev = pci_get_drvdata(pci_dev);
@@ -312,15 +304,3 @@ static void virtio_pci_remove(struct pci_dev *pci_dev)
pci_disable_device(pci_dev);
kfree(vp_dev);
}
-
-static struct pci_driver virtio_pci_driver = {
- .name = "virtio-pci",
- .id_table = virtio_pci_id_table,
- .probe = virtio_pci_probe,
- .remove = virtio_pci_remove,
-#ifdef CONFIG_PM_SLEEP
- .driver.pm = &virtio_pci_pm_ops,
-#endif
-};
-
-module_pci_driver(virtio_pci_driver);
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