Record networking and DMA development progress

Add the current OS source tree, build scripts, system image layout, and development notes covering DMA page allocation, e1000 bring-up, net API dispatch, and DHCP work in progress.
2026-07-02 16:17:09 +08:00
parent fbc14631e3
commit f1a2a110d7
182 changed files with 16472 additions and 0 deletions
@@ -0,0 +1,50 @@
+#ifndef UTSM_SEGMENT_H
+#define UTSM_SEGMENT_H
+
+#include <utsm/types.h>
+#include <utsm/uuid.h>
+#include <utsm/status.h>
+#include <utsm/capability.h>
+#include <utsm/dirty.h>
+
+typedef enum {
+    UTSM_SEG_FREE = 0,
+    UTSM_SEG_ACTIVE,
+    UTSM_SEG_CHECKPOINTING,
+    UTSM_SEG_SEALED,
+    UTSM_SEG_RECOVERING,
+    UTSM_SEG_POISONED,
+    UTSM_SEG_DESTROYED
+} utsm_segment_state;
+
+#define UTSM_SEG_F_READ            (1U << 0)
+#define UTSM_SEG_F_WRITE           (1U << 1)
+#define UTSM_SEG_F_EXEC            (1U << 2)
+#define UTSM_SEG_F_DMA             (1U << 3)
+#define UTSM_SEG_F_STRONG_RECOVERY (1U << 4)
+
+typedef struct utsm_segment_desc {
+    uuid128_t segment_uuid;
+    uuid128_t owner_process_uuid;
+    u8 *cipher_base;
+    u64 cipher_length;
+    void *dmp_base;
+    u64 key_epoch;
+    u64 tweak_seed;
+    utsm_dirty_shard *dirty_shards;
+    u32 dirty_shard_count;
+    void *mac_table;
+    u32 generation;
+    u32 flags;
+    u32 state;
+    u32 last_cpu;
+    volatile u64 writer_seq;
+    u64 checkpoint_generation;
+} utsm_segment_desc;
+
+struct utsm_process_context;
+
+int utsm_create_segment(struct utsm_process_context *process, u64 size, u32 flags, utsm_capability *out_cap);
+utsm_segment_desc *utsm_get_segment(u32 slot);
+
+#endif