diff options
Diffstat (limited to 'drivers/vfio/pci/vfio_pci_rdwr.c')
| -rw-r--r-- | drivers/vfio/pci/vfio_pci_rdwr.c | 34 |
1 files changed, 26 insertions, 8 deletions
diff --git a/drivers/vfio/pci/vfio_pci_rdwr.c b/drivers/vfio/pci/vfio_pci_rdwr.c index 5f2b376dcebd..925419e0f459 100644 --- a/drivers/vfio/pci/vfio_pci_rdwr.c +++ b/drivers/vfio/pci/vfio_pci_rdwr.c @@ -21,6 +21,24 @@ #include "vfio_pci_private.h" +#ifdef __LITTLE_ENDIAN +#define vfio_ioread64 ioread64 +#define vfio_iowrite64 iowrite64 +#define vfio_ioread32 ioread32 +#define vfio_iowrite32 iowrite32 +#define vfio_ioread16 ioread16 +#define vfio_iowrite16 iowrite16 +#else +#define vfio_ioread64 ioread64be +#define vfio_iowrite64 iowrite64be +#define vfio_ioread32 ioread32be +#define vfio_iowrite32 iowrite32be +#define vfio_ioread16 ioread16be +#define vfio_iowrite16 iowrite16be +#endif +#define vfio_ioread8 ioread8 +#define vfio_iowrite8 iowrite8 + /* * Read or write from an __iomem region (MMIO or I/O port) with an excluded * range which is inaccessible. The excluded range drops writes and fills @@ -44,15 +62,15 @@ static ssize_t do_io_rw(void __iomem *io, char __user *buf, fillable = 0; if (fillable >= 4 && !(off % 4)) { - __le32 val; + u32 val; if (iswrite) { if (copy_from_user(&val, buf, 4)) return -EFAULT; - iowrite32(le32_to_cpu(val), io + off); + vfio_iowrite32(val, io + off); } else { - val = cpu_to_le32(ioread32(io + off)); + val = vfio_ioread32(io + off); if (copy_to_user(buf, &val, 4)) return -EFAULT; @@ -60,15 +78,15 @@ static ssize_t do_io_rw(void __iomem *io, char __user *buf, filled = 4; } else if (fillable >= 2 && !(off % 2)) { - __le16 val; + u16 val; if (iswrite) { if (copy_from_user(&val, buf, 2)) return -EFAULT; - iowrite16(le16_to_cpu(val), io + off); + vfio_iowrite16(val, io + off); } else { - val = cpu_to_le16(ioread16(io + off)); + val = vfio_ioread16(io + off); if (copy_to_user(buf, &val, 2)) return -EFAULT; @@ -82,9 +100,9 @@ static ssize_t do_io_rw(void __iomem *io, char __user *buf, if (copy_from_user(&val, buf, 1)) return -EFAULT; - iowrite8(val, io + off); + vfio_iowrite8(val, io + off); } else { - val = ioread8(io + off); + val = vfio_ioread8(io + off); if (copy_to_user(buf, &val, 1)) return -EFAULT; |