feat(drivers): Implement Bochs VBE display adapter, VirtIO-Blk, VirtIO-Net, VirtIO-RNG, and HWMON CoreTemp sensors + 'sensors' CLI utility

include/drivers/bochs.h

@@ -0,0 +1,41 @@
+#ifndef _DRIVERS_BOCHS_H
+#define _DRIVERS_BOCHS_H
+
+#include <stdint.h>
+#include <stddef.h>
+#include <stdbool.h>
+
+#define VBE_DISPI_IOPORT_INDEX 0x01CE
+#define VBE_DISPI_IOPORT_DATA  0x01CF
+
+#define VBE_DISPI_INDEX_ID          0x0
+#define VBE_DISPI_INDEX_XRES        0x1
+#define VBE_DISPI_INDEX_YRES        0x2
+#define VBE_DISPI_INDEX_BPP         0x3
+#define VBE_DISPI_INDEX_ENABLE      0x4
+#define VBE_DISPI_INDEX_BANK        0x5
+#define VBE_DISPI_INDEX_VIRT_WIDTH  0x6
+#define VBE_DISPI_INDEX_VIRT_HEIGHT 0x7
+#define VBE_DISPI_INDEX_X_OFFSET    0x8
+#define VBE_DISPI_INDEX_Y_OFFSET    0x9
+
+#define VBE_DISPI_DISABLED          0x00
+#define VBE_DISPI_ENABLED           0x01
+#define VBE_DISPI_LFB_ENABLED       0x40
+#define VBE_DISPI_NOCLEARMEM        0x80
+
+typedef struct {
+    uint32_t current_width;
+    uint32_t current_height;
+    uint32_t current_bpp;
+    uint64_t lfb_phys_addr;
+    uint16_t vbe_version;
+    bool     available;
+} bochs_vbe_info_t;
+
+bool bochs_vbe_init(void);
+bool bochs_vbe_is_available(void);
+int  bochs_vbe_set_mode(uint32_t width, uint32_t height, uint32_t bpp);
+const bochs_vbe_info_t* bochs_vbe_get_info(void);
+
+#endif // _DRIVERS_BOCHS_H

include/drivers/hwmon.h

@@ -0,0 +1,23 @@
+#ifndef _DRIVERS_HWMON_H
+#define _DRIVERS_HWMON_H
+
+#include <stdint.h>
+#include <stddef.h>
+#include <stdbool.h>
+
+typedef struct {
+    char     chip_name[32];
+    int32_t  cpu_temp_celsius;
+    int32_t  ambient_temp_celsius;
+    uint32_t fan_rpm;
+    uint32_t vcore_millivolts;
+    uint32_t v12_millivolts;
+    uint32_t v5_millivolts;
+    bool     initialized;
+} hwmon_data_t;
+
+void hwmon_init(void);
+void hwmon_refresh(void);
+const hwmon_data_t* hwmon_get_data(void);
+
+#endif // _DRIVERS_HWMON_H

include/drivers/virtio_blk.h

@@ -0,0 +1,33 @@
+#ifndef _DRIVERS_VIRTIO_BLK_H
+#define _DRIVERS_VIRTIO_BLK_H
+
+#include <stdint.h>
+#include <stddef.h>
+#include <stdbool.h>
+
+#define VIRTIO_BLK_T_IN           0
+#define VIRTIO_BLK_T_OUT          1
+#define VIRTIO_BLK_T_FLUSH        4
+#define VIRTIO_BLK_T_GET_ID       8
+
+typedef struct {
+    uint32_t type;
+    uint32_t reserved;
+    uint64_t sector;
+} __attribute__((packed)) virtio_blk_req_header_t;
+
+typedef struct {
+    char     serial[20];
+    uint64_t capacity_sectors;
+    uint32_t blk_size;
+    uint16_t queue_size;
+    bool     initialized;
+} virtio_blk_info_t;
+
+bool virtio_blk_init(void);
+bool virtio_blk_is_detected(void);
+const virtio_blk_info_t* virtio_blk_get_info(void);
+int  virtio_blk_read(uint64_t sector, uint32_t count, void* buffer);
+int  virtio_blk_write(uint64_t sector, uint32_t count, const void* buffer);
+
+#endif // _DRIVERS_VIRTIO_BLK_H

include/drivers/virtio_net.h

@@ -0,0 +1,30 @@
+#ifndef _DRIVERS_VIRTIO_NET_H
+#define _DRIVERS_VIRTIO_NET_H
+
+#include <stdint.h>
+#include <stddef.h>
+#include <stdbool.h>
+
+typedef struct {
+    uint8_t  flags;
+    uint8_t  gso_type;
+    uint16_t hdr_len;
+    uint16_t gso_size;
+    uint16_t csum_start;
+    uint16_t csum_offset;
+} __attribute__((packed)) virtio_net_hdr_t;
+
+typedef struct {
+    uint8_t  mac[6];
+    uint16_t status;
+    uint16_t max_virtqueue_pairs;
+    uint16_t mtu;
+    bool     initialized;
+} virtio_net_info_t;
+
+bool virtio_net_init(void);
+bool virtio_net_is_detected(void);
+void virtio_net_get_mac(uint8_t* mac_out);
+int  virtio_net_send_packet(const uint8_t* packet, uint16_t length);
+
+#endif // _DRIVERS_VIRTIO_NET_H

include/drivers/virtio_rng.h

@@ -0,0 +1,12 @@
+#ifndef _DRIVERS_VIRTIO_RNG_H
+#define _DRIVERS_VIRTIO_RNG_H
+
+#include <stdint.h>
+#include <stddef.h>
+#include <stdbool.h>
+
+bool virtio_rng_init(void);
+bool virtio_rng_is_detected(void);
+int  virtio_rng_get_random_bytes(void* buf, size_t len);
+
+#endif // _DRIVERS_VIRTIO_RNG_H