Remove dependency on Jetson (nvgpu) driver internals

For integrated (Jetson) GPUs:
- Directly retrieve and map GPU register region 0
- Directly check GPU power-on state before a register read/write
- Resume the GPU as needed for a register read/write

Most nvgpu APIs can now be called on TX2+ integrated GPUs without
first having to start some task on the GPU to make it non-suspended.

Tested on Jetson TX1, TX2, Xavier, and Orin.

1 files changed, 2 insertions, 0 deletions

diff --git a/nvdebug.h b/nvdebug.h
index 80f1a74..ca0f514 100644
--- a/nvdebug.h
+++ b/nvdebug.h
@@ -1470,6 +1470,8 @@ struct nvdebug_state {
         struct gk20a *g;
         // Pointer to PCI device needed for pci_iounmap and pci_resource_start
         struct pci_dev *pcid;
+        // Pointer to platform device needed for platform_get_resource
+        struct platform_device *platd;
         // Pointer to generic device struct (both platform and pcie devices)
         struct device *dev;
 };