1 files changed, 28 insertions, 15 deletions
diff --git a/samples/rust/rust_dma.rs b/samples/rust/rust_dma.rs
index c5e7cce68654..4d324f06cc2a 100644
--- a/samples/rust/rust_dma.rs
+++ b/samples/rust/rust_dma.rs
@@ -5,17 +5,20 @@
 //! To make this driver probe, QEMU must be run with `-device pci-testdev`.
 
 use kernel::{
-    bindings,
     device::Core,
-    dma::{CoherentAllocation, Device, DmaMask},
-    pci,
+    dma::{CoherentAllocation, DataDirection, Device, DmaMask},
+    page, pci,
     prelude::*,
-    types::ARef,
+    scatterlist::{Owned, SGTable},
+    sync::aref::ARef,
 };
 
+#[pin_data(PinnedDrop)]
 struct DmaSampleDriver {
     pdev: ARef<pci::Device>,
     ca: CoherentAllocation<MyStruct>,
+    #[pin]
+    sgt: SGTable<Owned<VVec<u8>>>,
 }
 
 const TEST_VALUES: [(u32, u32); 5] = [
@@ -45,10 +48,7 @@ kernel::pci_device_table!(
     PCI_TABLE,
     MODULE_PCI_TABLE,
     <DmaSampleDriver as pci::Driver>::IdInfo,
-    [(
-        pci::DeviceId::from_id(bindings::PCI_VENDOR_ID_REDHAT, 0x5),
-        ()
-    )]
+    [(pci::DeviceId::from_id(pci::Vendor::REDHAT, 0x5), ())]
 );
 
 impl pci::Driver for DmaSampleDriver {
@@ -70,21 +70,30 @@ impl pci::Driver for DmaSampleDriver {
             kernel::dma_write!(ca[i] = MyStruct::new(value.0, value.1))?;
         }
 
-        let drvdata = KBox::new(
-            Self {
+        let size = 4 * page::PAGE_SIZE;
+        let pages = VVec::with_capacity(size, GFP_KERNEL)?;
+
+        let sgt = SGTable::new(pdev.as_ref(), pages, DataDirection::ToDevice, GFP_KERNEL);
+
+        let drvdata = KBox::pin_init(
+            try_pin_init!(Self {
                 pdev: pdev.into(),
                 ca,
-            },
+                sgt <- sgt,
+            }),
             GFP_KERNEL,
         )?;
 
-        Ok(drvdata.into())
+        Ok(drvdata)
     }
 }
 
-impl Drop for DmaSampleDriver {
-    fn drop(&mut self) {
-        dev_info!(self.pdev.as_ref(), "Unload DMA test driver.\n");
+#[pinned_drop]
+impl PinnedDrop for DmaSampleDriver {
+    fn drop(self: Pin<&mut Self>) {
+        let dev = self.pdev.as_ref();
+
+        dev_info!(dev, "Unload DMA test driver.\n");
 
         for (i, value) in TEST_VALUES.into_iter().enumerate() {
             let val0 = kernel::dma_read!(self.ca[i].h);
@@ -99,6 +108,10 @@ impl Drop for DmaSampleDriver {
                 assert_eq!(val1, value.1);
             }
         }
+
+        for (i, entry) in self.sgt.iter().enumerate() {
+            dev_info!(dev, "Entry[{}]: DMA address: {:#x}", i, entry.dma_address());
+        }
     }
 }