nova: add a gsp object with fw / radix3wip/fw-loader

The radix3 impl in this needs some scatterlist bindings I expect.

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 23 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nova/driver.rs b/drivers/gpu/drm/nova/driver.rs
index 33abf2545994..84e01dc04f82 100644
--- a/drivers/gpu/drm/nova/driver.rs
+++ b/drivers/gpu/drm/nova/driver.rs
@@ -22,6 +22,29 @@ struct NovaDevice;
 /// BAR Size
 pub(crate) const BAR_SIZE: usize = 16777216;
 
+use core::ops::{Add, BitAnd, Div, Not, Sub};
+
+/// Aligns an integer type to a power of two.
+pub(crate) fn align<T>(a: T, b: T) -> T
+where
+    T: Copy
+        + Default
+        + BitAnd<Output = T>
+        + Not<Output = T>
+        + Add<Output = T>
+        + Sub<Output = T>
+        + Div<Output = T>
+        + core::cmp::PartialEq,
+{
+    let def: T = Default::default();
+    #[allow(clippy::eq_op)]
+    let one: T = !def / !def;
+
+    assert!((b & (b - one)) == def);
+
+    (a + b - one) & !(b - one)
+}
+
 impl pci::Driver for NovaDevice {
 
     define_pci_id_table! {