xyou
f1a2a110d7
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.
142 lines
3.6 KiB
C
142 lines
3.6 KiB
C
#ifndef UTSM_DKM_H
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#define UTSM_DKM_H
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#include <utsm/types.h>
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#include <utsm/dma.h>
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#include <utsm/block.h>
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#include <utsm/net.h>
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#define DKM_DRIVER_MAGIC 0x444B4D31u
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#define DKM_ABI_VERSION 1u
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#define DKM_KERNEL_API_VERSION 1u
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#define DKM_CLASS_PLATFORM 1u
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#define DKM_CLASS_BUS 2u
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#define DKM_CLASS_INTERRUPT 3u
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#define DKM_CLASS_TIMER 4u
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#define DKM_CLASS_CONSOLE 5u
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#define DKM_CLASS_STORAGE 6u
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#define DKM_CLASS_FS 7u
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#define DKM_CLASS_NET 8u
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#define DKM_CLASS_INPUT 9u
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#define DKM_CLASS_GPU 10u
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#define DKM_CLASS_MISC 11u
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#define DKM_F_REQUIRED (1u << 0)
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#define DKM_F_BOOT_MODULE (1u << 1)
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#define DKM_F_NO_UNLOAD (1u << 2)
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#define DKM_F_STRONG_RECOVERY (1u << 3)
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#define DKM_F_DMA_REQUIRED (1u << 4)
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#define DKM_F_EARLY_LOG (1u << 5)
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struct dkm_kernel_api;
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struct dkm_driver_handle;
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typedef struct dkm_driver_desc {
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u32 magic;
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u16 abi_version;
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u16 desc_size;
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const char *name;
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const char *version;
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const char *vendor;
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u32 driver_class;
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u32 stage;
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u32 flags;
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u32 priority;
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const char *const *depends;
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u32 depends_count;
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const char *const *provides;
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u32 provides_count;
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u64 min_kernel_abi;
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u64 feature_bits;
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u64 reserved0;
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u64 reserved1;
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} dkm_driver_desc;
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typedef int (*dkm_driver_init_fn)(const struct dkm_kernel_api *api, struct dkm_driver_handle *handle);
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typedef int (*dkm_driver_exit_fn)(struct dkm_driver_handle *handle);
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typedef struct dkm_log_api {
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void (*info)(const char *msg);
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void (*warn)(const char *msg);
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void (*error)(const char *msg);
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void (*panic)(const char *msg);
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} dkm_log_api;
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typedef struct dkm_kernel_api {
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u32 version;
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u32 size;
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u64 feature_bits;
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const dkm_log_api *log;
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const void *mem;
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const void *utsm;
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const void *irq;
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const void *pci;
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const dkm_dma_api *dma;
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const void *vfs;
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const dkm_net_api *net;
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const void *timer;
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const void *drr;
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const void *rsdp_address; /* ACPI RSDP physical address */
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const void *fb_address; /* framebuffer base */
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u64 fb_width;
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u64 fb_height;
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u64 fb_pitch;
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u16 fb_bpp;
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const void *boot_modules_response; /* limine_module_response* */
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int (*irq_register)(u8 irq, void *handler); /* kernel irq_register */
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u64 hhdm_offset; /* physical → virtual */
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const dkm_block_api *block; /* block provider registry */
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} dkm_kernel_api;
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typedef enum dkm_driver_state {
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DKM_STATE_DISCOVERED = 0,
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DKM_STATE_ABI_CHECKED,
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DKM_STATE_INITING,
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DKM_STATE_ACTIVE,
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DKM_STATE_FAILED
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} dkm_driver_state;
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typedef struct dkm_driver_handle {
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const dkm_driver_desc *desc;
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dkm_driver_state state;
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i32 init_status;
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u32 load_stage;
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u32 flags;
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} dkm_driver_handle;
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typedef struct dkm_builtin_driver {
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const dkm_driver_desc *desc;
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dkm_driver_init_fn init;
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dkm_driver_exit_fn exit;
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} dkm_builtin_driver;
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void dkm_init(void);
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int dkm_load_builtin(const dkm_builtin_driver *driver);
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void dkm_scan_boot_modules(void);
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void dsm_load_by_manifest(void);
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void dkm_fill_platform_info(void);
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const dkm_kernel_api *dkm_get_kernel_api(void);
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/* exposed for manifest parser */
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struct dkm_symbol_scan {
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const void *driver_desc;
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const void *driver_init;
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const void *driver_exit;
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};
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int dkm_check_elf64(const void *address, u64 size);
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int dkm_scan_symbols(const void *address, u64 size, struct dkm_symbol_scan *out);
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int dkm_load_elf_rel(const void *address, u64 size, const struct dkm_symbol_scan *symbols);
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extern const dkm_builtin_driver dkm_builtin_console_early;
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#endif
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