From bfd269ee74d166be4f386640f8b5daad31d5d6ed Mon Sep 17 00:00:00 2001
From: Arthur Hanson Rasmusson <arthur@vgpu.io>
Date: Sun, 13 Sep 2026 19:28:03 -0400
Subject: Phase 4: Portable Architecture Implementation

- Firmware Analyzer: Runtime firmware signature computation (CRC32, SHA256) and pattern-based RPC handler address discovery
- Dynamic RPC Dispatcher: Version-aware dispatch with native firmware handlers (550/560/570/580) and emulation fallback
- Hardware Architecture Layer: Turing, Ampere, Blackwell configs with BAR layouts, doorbell offsets, MSI-X vectors
- Driver Version Adaptation Layer: Feature detection per driver version
- Declarative YAML configs for hardware (turing/ampere/blackwell) and versions (550/560/570/580)
- Kernel unit tests for GSP emulation (gsp_emulation_test.c)
- Test infrastructure scripts (test_gsp_emu.sh, test_guest_driver.sh, test_cuda_workloads.sh, test_graphics_workloads.sh, test_windows_guest.sh, test_vgpu_stack.sh)
- Updated kernel Makefile with new source files
---
 kernel/version/version.c | 137 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 137 insertions(+)
 create mode 100644 kernel/version/version.c

(limited to 'kernel/version/version.c')

diff --git a/kernel/version/version.c b/kernel/version/version.c
new file mode 100644
index 0000000..745be97
--- /dev/null
+++ b/kernel/version/version.c
@@ -0,0 +1,137 @@
+/*
+ * Driver Version Adaptation Layer
+ * Handles interface differences between NVIDIA driver versions
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/version.h>
+
+#include "version.h"
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Open-IOV");
+MODULE_DESCRIPTION("Driver Version Adaptation Layer");
+
+/* Version 550 interface */
+static struct driver_interface interface_550 = {
+    .version = "550",
+    .major = 550,
+    .minor = 0,
+    .has_vgpu_vfio = true,
+    .has_migration = true,
+    .has_scheduling = true,
+    .has_notifications = true,
+    .has_wpr = true,
+    .vgpu_vfio_ops_size = sizeof(struct nvidia_vgpu_vfio_ops),
+    .mdev_parent_ops_size = sizeof(struct nv_vgpu_mdev_parent_ops),
+};
+
+/* Version 560 interface */
+static struct driver_interface interface_560 = {
+    .version = "560",
+    .major = 560,
+    .minor = 0,
+    .has_vgpu_vfio = true,
+    .has_migration = true,
+    .has_scheduling = true,
+    .has_notifications = true,
+    .has_wpr = true,
+    .vgpu_vfio_ops_size = sizeof(struct nvidia_vgpu_vfio_ops),
+    .mdev_parent_ops_size = sizeof(struct nv_vgpu_mdev_parent_ops),
+};
+
+/* Version 570 interface */
+static struct driver_interface interface_570 = {
+    .version = "570",
+    .major = 570,
+    .minor = 0,
+    .has_vgpu_vfio = true,
+    .has_migration = true,
+    .has_scheduling = true,
+    .has_notifications = true,
+    .has_wpr = true,
+    .vgpu_vfio_ops_size = sizeof(struct nvidia_vgpu_vfio_ops),
+    .mdev_parent_ops_size = sizeof(struct nv_vgpu_mdev_parent_ops),
+};
+
+/* Version 580 interface */
+static struct driver_interface interface_580 = {
+    .version = "580",
+    .major = 580,
+    .minor = 0,
+    .has_vgpu_vfio = true,
+    .has_migration = true,
+    .has_scheduling = true,
+    .has_notifications = true,
+    .has_wpr = true,
+    .vgpu_vfio_ops_size = sizeof(struct nvidia_vgpu_vfio_ops),
+    .mdev_parent_ops_size = sizeof(struct nv_vgpu_mdev_parent_ops),
+};
+
+static struct driver_interface *interfaces[] = {
+    &interface_550,
+    &interface_560,
+    &interface_570,
+    &interface_580,
+    NULL
+};
+
+struct driver_interface *version_get_interface(const char *version_str)
+{
+    int major = 0, minor = 0;
+    
+    if (version_str) {
+        sscanf(version_str, "%d.%d", &major, &minor);
+    }
+    
+    for (int i = 0; interfaces[i]; i++) {
+        if (interfaces[i]->major == major)
+            return interfaces[i];
+    }
+    
+    /* Default to latest known */
+    return &interface_570;
+}
+
+struct driver_interface *version_get_by_kernel_version(void)
+{
+    /* Try to detect from kernel version or module version */
+    return &interface_570;
+}
+
+bool version_has_feature(struct driver_interface *iface, enum driver_feature feature)
+{
+    if (!iface)
+        return false;
+    
+    switch (feature) {
+        case DRV_FEAT_VGPU_VFIO:
+            return iface->has_vgpu_vfio;
+        case DRV_FEAT_MIGRATION:
+            return iface->has_migration;
+        case DRV_FEAT_SCHEDULING:
+            return iface->has_scheduling;
+        case DRV_FEAT_NOTIFICATIONS:
+            return iface->has_notifications;
+        case DRV_FEAT_WPR:
+            return iface->has_wpr;
+        default:
+            return false;
+    }
+}
+
+const char *version_get_string(struct driver_interface *iface)
+{
+    return iface ? iface->version : "unknown";
+}
+
+EXPORT_SYMBOL_GPL(version_get_interface);
+EXPORT_SYMBOL_GPL(version_get_by_kernel_version);
+EXPORT_SYMBOL_GPL(version_has_feature);
+EXPORT_SYMBOL_GPL(version_get_string);
+
+MODULE_DESCRIPTION("Driver Version Adaptation Layer");
+MODULE_LICENSE("GPL");
\ No newline at end of file
-- 
cgit v1.2.3