diff options
| author | Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com> | 2017-05-03 14:52:34 -0600 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2017-05-03 14:52:34 -0600 |
| commit | 38d49e8c1523d97d2191190d3f7b4ce7a0ab5aa3 (patch) | |
| tree | ed4780cfd6fc7caa624f99c166a21a2cb69449ab | |
| parent | 15126cba8618ac6cf4dde320ff9cd96ad0640d5d (diff) | |
vfio: enable 8-byte reads/writes to vfio
This patch enables 8-byte writes and reads to VFIO. Such implemention
is already done but it's missing the 'case' to handle such accesses in
both vfio_region_write and vfio_region_read and the MemoryRegionOps:
impl.max_access_size and impl.min_access_size.
After this patch, 8-byte writes such as:
qemu_mutex_lock locked mutex 0x10905ad8
vfio_region_write (0001:03:00.0:region1+0xc0, 0x4140c, 4)
vfio_region_write (0001:03:00.0:region1+0xc4, 0xa0000, 4)
qemu_mutex_unlock unlocked mutex 0x10905ad8
goes like this:
qemu_mutex_lock locked mutex 0x10905ad8
vfio_region_write (0001:03:00.0:region1+0xc0, 0xbfd0008, 8)
qemu_mutex_unlock unlocked mutex 0x10905ad8
Signed-off-by: Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
| -rw-r--r-- | hw/vfio/common.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/hw/vfio/common.c b/hw/vfio/common.c index 6572c0744c..a8f12eeb35 100644 --- a/hw/vfio/common.c +++ b/hw/vfio/common.c @@ -119,6 +119,9 @@ void vfio_region_write(void *opaque, hwaddr addr, case 4: buf.dword = cpu_to_le32(data); break; + case 8: + buf.qword = cpu_to_le64(data); + break; default: hw_error("vfio: unsupported write size, %d bytes", size); break; @@ -173,6 +176,9 @@ uint64_t vfio_region_read(void *opaque, case 4: data = le32_to_cpu(buf.dword); break; + case 8: + data = le64_to_cpu(buf.qword); + break; default: hw_error("vfio: unsupported read size, %d bytes", size); break; @@ -194,6 +200,10 @@ const MemoryRegionOps vfio_region_ops = { .min_access_size = 1, .max_access_size = 8, }, + .impl = { + .min_access_size = 1, + .max_access_size = 8, + }, }; /* |