dmaengine: idxd: Allow registers.h to be included from tools/

Allow drivers/dma/idxd/registers.h to be included from userspace in
tools/ by adjusting the include path to uapi/linux/idxd.h if __KERNEL__
is not defined.

A subsequent commit will use registers.h to implement a userspace driver
for Intel DSA devices in tools/testing/selftests/vfio.

Acked-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: David Matlack <dmatlack@google.com>
Link: https://lore.kernel.org/r/20250822212518.4156428-22-dmatlack@google.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>

diff --git a/drivers/dma/idxd/registers.h b/drivers/dma/idxd/registers.h
index 9c1c546fe443e1773c77a934d73763d4bc5bb7c0..02bab136385e73de50b99a37379fc3844fc17a8a 100644 (file)
--- a/drivers/dma/idxd/registers.h
+++ b/drivers/dma/idxd/registers.h
@@ -3,7 +3,11 @@
 #ifndef _IDXD_REGISTERS_H_
 #define _IDXD_REGISTERS_H_
 
+#ifdef __KERNEL__
 #include <uapi/linux/idxd.h>
+#else
+#include <linux/idxd.h>
+#endif
 
 /* PCI Config */
 #define PCI_DEVICE_ID_INTEL_DSA_GNRD   0x11fb