Initial commit: Open-IOV vGPU-IO complete stack

- Firmware decompilation: GSP 570.144W (28.5MB ELF, RV64IMAC), 132 decompiled C files
- Kernel modules: nvidia.ko (34MB, OpenRM), open-iov-vfio.ko (2.8MB, VFIO mdev), gsp-vgpu.ko (1.8MB, guest driver)
- Userspace: libiov.so/libvgpu.so (76KB), example_vgpu (28KB), rpc_emulator.c
- PCI config space emulation (256B with PM, MSI, MSI-X, PCIe caps)
- 12 RPC types fully mapped from firmware decompilation
- BAR trap, WPR, scheduling, notification, migration emulation
- Helper scripts: load_vgpu_stack, create_mdev, launch_qemu_vgpu, test_vgpu_stack, setup_guest_driver, unload_vgpu_stack
- Architecture documentation
- Wiki: 10 technical documents
- Git LFS for large binaries (.ko, .bin, .iso, .img, .o, ghidra repos)
- nvidia-open-gpu-kernel-modules as submodule

1 files changed, 123 insertions, 0 deletions

diff --git a/kernel/include/nvstatus.h b/kernel/include/nvstatus.h
new file mode 100644
index 0000000..4f5284d
--- /dev/null
+++ b/kernel/include/nvstatus.h
@@ -0,0 +1,123 @@
+/*
+ * SPDX-FileCopyrightText: Copyright (c) 2014-2019 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef SDK_NVSTATUS_H
+#define SDK_NVSTATUS_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "nvtypes.h"
+
+typedef NvU32 NV_STATUS;
+
+#define NV_STATUS_CODE( name, code, string ) name = (code),
+
+enum 
+{
+    #include "nvstatuscodes.h"
+};
+
+#undef NV_STATUS_CODE
+
+/*!
+ * @def         NV_STATUS_LEVEL_OK
+ * @see         NV_STATUS_LEVEL
+ * @brief       Success: No error or special condition
+ */
+#define NV_STATUS_LEVEL_OK              0
+
+/*!
+ * @def         NV_STATUS_LEVEL_WARN
+ * @see         NV_STATUS_LEVEL
+ * @brief       Success, but there is an special condition
+ *
+ * @details     In general, NV_STATUS_LEVEL_WARN status codes are handled the
+ *              same as NV_STATUS_LEVEL_OK, but are usefil to indicate that
+ *              there is a condition that may be specially handled.
+ *
+ *              Therefore, in most cases, client function should test for
+ *              status <= NV_STATUS_LEVEL_WARN or status > NV_STATUS_LEVEL_WARN
+ *              to determine success v. failure of a call.
+ */
+#define NV_STATUS_LEVEL_WARN            1
+
+/*!
+ * @def         NV_STATUS_LEVEL_ERR
+ * @see         NV_STATUS_LEVEL
+ * @brief       Unrecoverable error condition
+ */
+#define NV_STATUS_LEVEL_ERR             3
+
+/*!
+ * @def         NV_STATUS_LEVEL
+ * @see         NV_STATUS_LEVEL_OK
+ * @see         NV_STATUS_LEVEL_WARN
+ * @see         NV_STATUS_LEVEL_ERR
+ * @brief       Level of the status code
+ *
+ * @warning     IMPORTANT: When comparing NV_STATUS_LEVEL(_S) against one of
+ *              these constants, it is important to use '<=' or '>' (rather
+ *              than '<' or '>=').
+ *
+ *              For example. do:
+ *                  if (NV_STATUS_LEVEL(status) <= NV_STATUS_LEVEL_WARN)
+ *              rather than:
+ *                  if (NV_STATUS_LEVEL(status) < NV_STATUS_LEVEL_ERR)
+ *
+ *              By being consistent in this manner, it is easier to systematically
+ *              add additional level constants.  New levels are likely to lower
+ *              (rather than raise) the severity of _ERR codes.  For example,
+ *              if we were to add NV_STATUS_LEVEL_RETRY to indicate hardware
+ *              failures that may be recoverable (e.g. RM_ERR_TIMEOUT_RETRY
+ *              or RM_ERR_BUSY_RETRY), it would be less severe than
+ *              NV_STATUS_LEVEL_ERR the level to which these status codes now
+ *              belong.  Using '<=' and '>' ensures your code is not broken in
+ *              cases like this.
+ */
+#define NV_STATUS_LEVEL(_S)                                               \
+    ((_S) == NV_OK?                               NV_STATUS_LEVEL_OK:     \
+    ((_S) != NV_ERR_GENERIC && (_S) & 0x00010000? NV_STATUS_LEVEL_WARN:   \
+                                                  NV_STATUS_LEVEL_ERR))
+
+/*!
+ * @def         NV_STATUS_LEVEL
+ * @see         NV_STATUS_LEVEL_OK
+ * @see         NV_STATUS_LEVEL_WARN
+ * @see         NV_STATUS_LEVEL_ERR
+ * @brief       Character representing status code level
+ */
+#define NV_STATUS_LEVEL_CHAR(_S)                           \
+    ((_S) == NV_OK?                                '0':    \
+    ((_S) != NV_ERR_GENERIC && (_S) & 0x00010000?  'W':    \
+                                                   'E'))
+
+// Function definitions
+const char *nvstatusToString(NV_STATUS nvStatusIn);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* SDK_NVSTATUS_H */