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-rw-r--r--drivers/ata/ahci.c72
-rw-r--r--drivers/ata/libata-acpi.c96
-rw-r--r--drivers/ata/pata_ali.c2
-rw-r--r--drivers/block/virtio_blk.c1
-rw-r--r--drivers/net/virtio_net.c22
-rw-r--r--drivers/pci/hotplug/pciehp_core.c2
-rw-r--r--drivers/virtio/virtio_balloon.c4
-rw-r--r--drivers/virtio/virtio_pci.c15
-rw-r--r--drivers/virtio/virtio_ring.c1
9 files changed, 150 insertions, 65 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 6978469eb16..17ee6ed985d 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -49,6 +49,10 @@
#define DRV_NAME "ahci"
#define DRV_VERSION "3.0"
+static int ahci_skip_host_reset;
+module_param_named(skip_host_reset, ahci_skip_host_reset, int, 0444);
+MODULE_PARM_DESC(skip_host_reset, "skip global host reset (0=don't skip, 1=skip)");
+
static int ahci_enable_alpm(struct ata_port *ap,
enum link_pm policy);
static void ahci_disable_alpm(struct ata_port *ap);
@@ -587,6 +591,7 @@ static const struct pci_device_id ahci_pci_tbl[] = {
/* Marvell */
{ PCI_VDEVICE(MARVELL, 0x6145), board_ahci_mv }, /* 6145 */
+ { PCI_VDEVICE(MARVELL, 0x6121), board_ahci_mv }, /* 6121 */
/* Generic, PCI class code for AHCI */
{ PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
@@ -661,6 +666,7 @@ static void ahci_save_initial_config(struct pci_dev *pdev,
void __iomem *mmio = pcim_iomap_table(pdev)[AHCI_PCI_BAR];
u32 cap, port_map;
int i;
+ int mv;
/* make sure AHCI mode is enabled before accessing CAP */
ahci_enable_ahci(mmio);
@@ -696,12 +702,16 @@ static void ahci_save_initial_config(struct pci_dev *pdev,
* presence register, as bit 4 (counting from 0)
*/
if (hpriv->flags & AHCI_HFLAG_MV_PATA) {
+ if (pdev->device == 0x6121)
+ mv = 0x3;
+ else
+ mv = 0xf;
dev_printk(KERN_ERR, &pdev->dev,
"MV_AHCI HACK: port_map %x -> %x\n",
- hpriv->port_map,
- hpriv->port_map & 0xf);
+ port_map,
+ port_map & mv);
- port_map &= 0xf;
+ port_map &= mv;
}
/* cross check port_map and cap.n_ports */
@@ -1088,29 +1098,35 @@ static int ahci_reset_controller(struct ata_host *host)
ahci_enable_ahci(mmio);
/* global controller reset */
- tmp = readl(mmio + HOST_CTL);
- if ((tmp & HOST_RESET) == 0) {
- writel(tmp | HOST_RESET, mmio + HOST_CTL);
- readl(mmio + HOST_CTL); /* flush */
- }
+ if (!ahci_skip_host_reset) {
+ tmp = readl(mmio + HOST_CTL);
+ if ((tmp & HOST_RESET) == 0) {
+ writel(tmp | HOST_RESET, mmio + HOST_CTL);
+ readl(mmio + HOST_CTL); /* flush */
+ }
- /* reset must complete within 1 second, or
- * the hardware should be considered fried.
- */
- ssleep(1);
+ /* reset must complete within 1 second, or
+ * the hardware should be considered fried.
+ */
+ ssleep(1);
- tmp = readl(mmio + HOST_CTL);
- if (tmp & HOST_RESET) {
- dev_printk(KERN_ERR, host->dev,
- "controller reset failed (0x%x)\n", tmp);
- return -EIO;
- }
+ tmp = readl(mmio + HOST_CTL);
+ if (tmp & HOST_RESET) {
+ dev_printk(KERN_ERR, host->dev,
+ "controller reset failed (0x%x)\n", tmp);
+ return -EIO;
+ }
- /* turn on AHCI mode */
- ahci_enable_ahci(mmio);
+ /* turn on AHCI mode */
+ ahci_enable_ahci(mmio);
- /* some registers might be cleared on reset. restore initial values */
- ahci_restore_initial_config(host);
+ /* Some registers might be cleared on reset. Restore
+ * initial values.
+ */
+ ahci_restore_initial_config(host);
+ } else
+ dev_printk(KERN_INFO, host->dev,
+ "skipping global host reset\n");
if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
u16 tmp16;
@@ -1162,9 +1178,14 @@ static void ahci_init_controller(struct ata_host *host)
int i;
void __iomem *port_mmio;
u32 tmp;
+ int mv;
if (hpriv->flags & AHCI_HFLAG_MV_PATA) {
- port_mmio = __ahci_port_base(host, 4);
+ if (pdev->device == 0x6121)
+ mv = 2;
+ else
+ mv = 4;
+ port_mmio = __ahci_port_base(host, mv);
writel(0, port_mmio + PORT_IRQ_MASK);
@@ -2241,7 +2262,10 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
if (rc)
return rc;
- rc = pcim_iomap_regions(pdev, 1 << AHCI_PCI_BAR, DRV_NAME);
+ /* AHCI controllers often implement SFF compatible interface.
+ * Grab all PCI BARs just in case.
+ */
+ rc = pcim_iomap_regions_request_all(pdev, 1 << AHCI_PCI_BAR, DRV_NAME);
if (rc == -EBUSY)
pcim_pin_device(pdev);
if (rc)
diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c
index 0770cb7391a..bf98a566ada 100644
--- a/drivers/ata/libata-acpi.c
+++ b/drivers/ata/libata-acpi.c
@@ -118,45 +118,77 @@ static void ata_acpi_associate_ide_port(struct ata_port *ap)
ap->pflags |= ATA_PFLAG_INIT_GTM_VALID;
}
-static void ata_acpi_handle_hotplug(struct ata_port *ap, struct kobject *kobj,
+static void ata_acpi_handle_hotplug(struct ata_port *ap, struct ata_device *dev,
u32 event)
{
char event_string[12];
char *envp[] = { event_string, NULL };
- struct ata_eh_info *ehi = &ap->link.eh_info;
-
- if (event == 0 || event == 1) {
- unsigned long flags;
- spin_lock_irqsave(ap->lock, flags);
- ata_ehi_clear_desc(ehi);
- ata_ehi_push_desc(ehi, "ACPI event");
- ata_ehi_hotplugged(ehi);
- ata_port_freeze(ap);
- spin_unlock_irqrestore(ap->lock, flags);
+ struct ata_eh_info *ehi;
+ struct kobject *kobj = NULL;
+ int wait = 0;
+ unsigned long flags;
+
+ if (!ap)
+ ap = dev->link->ap;
+ ehi = &ap->link.eh_info;
+
+ spin_lock_irqsave(ap->lock, flags);
+
+ switch (event) {
+ case ACPI_NOTIFY_BUS_CHECK:
+ case ACPI_NOTIFY_DEVICE_CHECK:
+ ata_ehi_push_desc(ehi, "ACPI event");
+ ata_ehi_hotplugged(ehi);
+ ata_port_freeze(ap);
+ break;
+
+ case ACPI_NOTIFY_EJECT_REQUEST:
+ ata_ehi_push_desc(ehi, "ACPI event");
+ if (dev)
+ dev->flags |= ATA_DFLAG_DETACH;
+ else {
+ struct ata_link *tlink;
+ struct ata_device *tdev;
+
+ ata_port_for_each_link(tlink, ap)
+ ata_link_for_each_dev(tdev, tlink)
+ tdev->flags |= ATA_DFLAG_DETACH;
+ }
+
+ ata_port_schedule_eh(ap);
+ wait = 1;
+ break;
}
+ if (dev) {
+ if (dev->sdev)
+ kobj = &dev->sdev->sdev_gendev.kobj;
+ } else
+ kobj = &ap->dev->kobj;
+
if (kobj) {
sprintf(event_string, "BAY_EVENT=%d", event);
kobject_uevent_env(kobj, KOBJ_CHANGE, envp);
}
+
+ spin_unlock_irqrestore(ap->lock, flags);
+
+ if (wait)
+ ata_port_wait_eh(ap);
}
static void ata_acpi_dev_notify(acpi_handle handle, u32 event, void *data)
{
struct ata_device *dev = data;
- struct kobject *kobj = NULL;
- if (dev->sdev)
- kobj = &dev->sdev->sdev_gendev.kobj;
-
- ata_acpi_handle_hotplug(dev->link->ap, kobj, event);
+ ata_acpi_handle_hotplug(NULL, dev, event);
}
static void ata_acpi_ap_notify(acpi_handle handle, u32 event, void *data)
{
struct ata_port *ap = data;
- ata_acpi_handle_hotplug(ap, &ap->dev->kobj, event);
+ ata_acpi_handle_hotplug(ap, NULL, event);
}
/**
@@ -191,20 +223,30 @@ void ata_acpi_associate(struct ata_host *host)
else
ata_acpi_associate_ide_port(ap);
- if (ap->acpi_handle)
- acpi_install_notify_handler (ap->acpi_handle,
- ACPI_SYSTEM_NOTIFY,
- ata_acpi_ap_notify,
- ap);
+ if (ap->acpi_handle) {
+ acpi_install_notify_handler(ap->acpi_handle,
+ ACPI_SYSTEM_NOTIFY,
+ ata_acpi_ap_notify, ap);
+#if defined(CONFIG_ACPI_DOCK) || defined(CONFIG_ACPI_DOCK_MODULE)
+ /* we might be on a docking station */
+ register_hotplug_dock_device(ap->acpi_handle,
+ ata_acpi_ap_notify, ap);
+#endif
+ }
for (j = 0; j < ata_link_max_devices(&ap->link); j++) {
struct ata_device *dev = &ap->link.device[j];
- if (dev->acpi_handle)
- acpi_install_notify_handler (dev->acpi_handle,
- ACPI_SYSTEM_NOTIFY,
- ata_acpi_dev_notify,
- dev);
+ if (dev->acpi_handle) {
+ acpi_install_notify_handler(dev->acpi_handle,
+ ACPI_SYSTEM_NOTIFY,
+ ata_acpi_dev_notify, dev);
+#if defined(CONFIG_ACPI_DOCK) || defined(CONFIG_ACPI_DOCK_MODULE)
+ /* we might be on a docking station */
+ register_hotplug_dock_device(dev->acpi_handle,
+ ata_acpi_dev_notify, dev);
+#endif
+ }
}
}
}
diff --git a/drivers/ata/pata_ali.c b/drivers/ata/pata_ali.c
index 7e68edf3c0f..8786455c901 100644
--- a/drivers/ata/pata_ali.c
+++ b/drivers/ata/pata_ali.c
@@ -295,7 +295,7 @@ static void ali_lock_sectors(struct ata_device *adev)
static int ali_check_atapi_dma(struct ata_queued_cmd *qc)
{
/* If its not a media command, its not worth it */
- if (qc->nbytes < 2048)
+ if (atapi_cmd_type(qc->cdb[0]) == ATAPI_MISC)
return -EOPNOTSUPP;
return 0;
}
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index 3b1a68d6edd..0cfbe8c594a 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -238,6 +238,7 @@ static int virtblk_probe(struct virtio_device *vdev)
vblk->disk->first_minor = index_to_minor(index);
vblk->disk->private_data = vblk;
vblk->disk->fops = &virtblk_fops;
+ vblk->disk->driverfs_dev = &vdev->dev;
index++;
/* If barriers are supported, tell block layer that queue is ordered */
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 19fd4cb0ddf..b58472cf76f 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -203,8 +203,11 @@ again:
if (received < budget) {
netif_rx_complete(vi->dev, napi);
if (unlikely(!vi->rvq->vq_ops->enable_cb(vi->rvq))
- && netif_rx_reschedule(vi->dev, napi))
+ && napi_schedule_prep(napi)) {
+ vi->rvq->vq_ops->disable_cb(vi->rvq);
+ __netif_rx_schedule(vi->dev, napi);
goto again;
+ }
}
return received;
@@ -278,10 +281,11 @@ again:
pr_debug("%s: virtio not prepared to send\n", dev->name);
netif_stop_queue(dev);
- /* Activate callback for using skbs: if this fails it
+ /* Activate callback for using skbs: if this returns false it
* means some were used in the meantime. */
if (unlikely(!vi->svq->vq_ops->enable_cb(vi->svq))) {
- printk("Unlikely: restart svq failed\n");
+ printk("Unlikely: restart svq race\n");
+ vi->svq->vq_ops->disable_cb(vi->svq);
netif_start_queue(dev);
goto again;
}
@@ -294,6 +298,15 @@ again:
return 0;
}
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void virtnet_netpoll(struct net_device *dev)
+{
+ struct virtnet_info *vi = netdev_priv(dev);
+
+ napi_schedule(&vi->napi);
+}
+#endif
+
static int virtnet_open(struct net_device *dev)
{
struct virtnet_info *vi = netdev_priv(dev);
@@ -336,6 +349,9 @@ static int virtnet_probe(struct virtio_device *vdev)
dev->stop = virtnet_close;
dev->hard_start_xmit = start_xmit;
dev->features = NETIF_F_HIGHDMA;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ dev->poll_controller = virtnet_netpoll;
+#endif
SET_NETDEV_DEV(dev, &vdev->dev);
/* Do we support "hardware" checksums? */
diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c
index 7f4836b8e71..5fa4ba0d993 100644
--- a/drivers/pci/hotplug/pciehp_core.c
+++ b/drivers/pci/hotplug/pciehp_core.c
@@ -467,7 +467,7 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
t_slot = pciehp_find_slot(ctrl, ctrl->slot_device_offset);
t_slot->hpc_ops->get_adapter_status(t_slot, &value); /* Check if slot is occupied */
- if (value) {
+ if (value && pciehp_force) {
rc = pciehp_enable_slot(t_slot);
if (rc) /* -ENODEV: shouldn't happen, but deal with it */
value = 0;
diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c
index c8a4332d113..0b3efc31ee6 100644
--- a/drivers/virtio/virtio_balloon.c
+++ b/drivers/virtio/virtio_balloon.c
@@ -152,7 +152,7 @@ static void virtballoon_changed(struct virtio_device *vdev)
wake_up(&vb->config_change);
}
-static inline int towards_target(struct virtio_balloon *vb)
+static inline s64 towards_target(struct virtio_balloon *vb)
{
u32 v;
__virtio_config_val(vb->vdev,
@@ -176,7 +176,7 @@ static int balloon(void *_vballoon)
set_freezable();
while (!kthread_should_stop()) {
- int diff;
+ s64 diff;
try_to_freeze();
wait_event_interruptible(vb->config_change,
diff --git a/drivers/virtio/virtio_pci.c b/drivers/virtio/virtio_pci.c
index 26f787ddd5f..59a8f73dec7 100644
--- a/drivers/virtio/virtio_pci.c
+++ b/drivers/virtio/virtio_pci.c
@@ -177,6 +177,7 @@ static irqreturn_t vp_interrupt(int irq, void *opaque)
struct virtio_pci_device *vp_dev = opaque;
struct virtio_pci_vq_info *info;
irqreturn_t ret = IRQ_NONE;
+ unsigned long flags;
u8 isr;
/* reading the ISR has the effect of also clearing it so it's very
@@ -197,12 +198,12 @@ static irqreturn_t vp_interrupt(int irq, void *opaque)
drv->config_changed(&vp_dev->vdev);
}
- spin_lock(&vp_dev->lock);
+ spin_lock_irqsave(&vp_dev->lock, flags);
list_for_each_entry(info, &vp_dev->virtqueues, node) {
if (vring_interrupt(irq, info->vq) == IRQ_HANDLED)
ret = IRQ_HANDLED;
}
- spin_unlock(&vp_dev->lock);
+ spin_unlock_irqrestore(&vp_dev->lock, flags);
return ret;
}
@@ -214,6 +215,7 @@ static struct virtqueue *vp_find_vq(struct virtio_device *vdev, unsigned index,
struct virtio_pci_device *vp_dev = to_vp_device(vdev);
struct virtio_pci_vq_info *info;
struct virtqueue *vq;
+ unsigned long flags;
u16 num;
int err;
@@ -255,9 +257,9 @@ static struct virtqueue *vp_find_vq(struct virtio_device *vdev, unsigned index,
vq->priv = info;
info->vq = vq;
- spin_lock(&vp_dev->lock);
+ spin_lock_irqsave(&vp_dev->lock, flags);
list_add(&info->node, &vp_dev->virtqueues);
- spin_unlock(&vp_dev->lock);
+ spin_unlock_irqrestore(&vp_dev->lock, flags);
return vq;
@@ -274,10 +276,11 @@ static void vp_del_vq(struct virtqueue *vq)
{
struct virtio_pci_device *vp_dev = to_vp_device(vq->vdev);
struct virtio_pci_vq_info *info = vq->priv;
+ unsigned long flags;
- spin_lock(&vp_dev->lock);
+ spin_lock_irqsave(&vp_dev->lock, flags);
list_del(&info->node);
- spin_unlock(&vp_dev->lock);
+ spin_unlock_irqrestore(&vp_dev->lock, flags);
vring_del_virtqueue(vq);
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index 3a28c138213..aa714028641 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -232,7 +232,6 @@ static bool vring_enable_cb(struct virtqueue *_vq)
vq->vring.avail->flags &= ~VRING_AVAIL_F_NO_INTERRUPT;
mb();
if (unlikely(more_used(vq))) {
- vq->vring.avail->flags |= VRING_AVAIL_F_NO_INTERRUPT;
END_USE(vq);
return false;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-31 16:07:39 +0000