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author | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2012-09-22 20:01:16 -0400 |
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committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2012-09-22 20:01:24 -0400 |
commit | a5f95155709cb854e96aa27969d110668cdbda9d (patch) | |
tree | c9392d6871184838bf81a0b70900e28558e92870 /drivers/pci | |
parent | c571898ffc24a1768e1b2dabeac0fc7dd4c14601 (diff) | |
parent | 2a3bce8f6afb9118a7ac3c360a5baf7cdaec87bc (diff) | |
download | linux-stable-a5f95155709cb854e96aa27969d110668cdbda9d.tar.gz linux-stable-a5f95155709cb854e96aa27969d110668cdbda9d.tar.bz2 linux-stable-a5f95155709cb854e96aa27969d110668cdbda9d.zip |
Merge branch 'stable/late-swiotlb.v3.3' into stable/for-linus-3.7
* stable/late-swiotlb.v3.3:
xen/swiotlb: Fix compile warnings when using plain integer instead of NULL pointer.
xen/swiotlb: Remove functions not needed anymore.
xen/pcifront: Use Xen-SWIOTLB when initting if required.
xen/swiotlb: For early initialization, return zero on success.
xen/swiotlb: Use the swiotlb_late_init_with_tbl to init Xen-SWIOTLB late when PV PCI is used.
xen/swiotlb: Move the error strings to its own function.
xen/swiotlb: Move the nr_tbl determination in its own function.
swiotlb: add the late swiotlb initialization function with iotlb memory
xen/swiotlb: With more than 4GB on 64-bit, disable the native SWIOTLB.
xen/swiotlb: Simplify the logic.
Conflicts:
arch/x86/xen/pci-swiotlb-xen.c
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'drivers/pci')
-rw-r--r-- | drivers/pci/xen-pcifront.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/pci/xen-pcifront.c b/drivers/pci/xen-pcifront.c index a4d901def8f2..7d6773535b67 100644 --- a/drivers/pci/xen-pcifront.c +++ b/drivers/pci/xen-pcifront.c @@ -21,6 +21,7 @@ #include <linux/bitops.h> #include <linux/time.h> +#include <asm/xen/swiotlb-xen.h> #define INVALID_GRANT_REF (0) #define INVALID_EVTCHN (-1) @@ -668,7 +669,7 @@ static irqreturn_t pcifront_handler_aer(int irq, void *dev) schedule_pcifront_aer_op(pdev); return IRQ_HANDLED; } -static int pcifront_connect(struct pcifront_device *pdev) +static int pcifront_connect_and_init_dma(struct pcifront_device *pdev) { int err = 0; @@ -681,9 +682,13 @@ static int pcifront_connect(struct pcifront_device *pdev) dev_err(&pdev->xdev->dev, "PCI frontend already installed!\n"); err = -EEXIST; } - spin_unlock(&pcifront_dev_lock); + if (!err && !swiotlb_nr_tbl()) { + err = pci_xen_swiotlb_init_late(); + if (err) + dev_err(&pdev->xdev->dev, "Could not setup SWIOTLB!\n"); + } return err; } @@ -842,10 +847,10 @@ static int __devinit pcifront_try_connect(struct pcifront_device *pdev) XenbusStateInitialised) goto out; - err = pcifront_connect(pdev); + err = pcifront_connect_and_init_dma(pdev); if (err) { xenbus_dev_fatal(pdev->xdev, err, - "Error connecting PCI Frontend"); + "Error setting up PCI Frontend"); goto out; } |