Working on ATA disk driver

.gitignore

@@ -8,4 +8,5 @@ diskwrite
 *.dump
 intlog.*
 *.img
-.vscode
+.vscode
+bochsrc

makefile

@@ -9,7 +9,7 @@ OBJS := $(patsubst src/kernel/%.c, bin/kernel/%.o, $(SRCS))
 
 all: bootloader tools kernel
 	cp bin/bootloader.bin image.bin
-	qemu-img resize -f raw image.bin 512M
+	qemu-img resize -f raw image.bin 64M
 	./diskwrite idm.elf ifsm.elf kernel.elf -o image.bin
 	sudo mount image.bin mount
 	sudo mkdir mount/mod # for kernel modules

src/kmodules/disk_driver.c

@@ -1,10 +1,81 @@
 #include<stdint.h>
 #include "modlib.h"
 
+#define MODULE_NAME "KIDM"
+
 KOS_MAPI_FP api;
 
+inline void outb(uint16_t port, uint8_t data){
+    asm volatile ("outb %0, %1" :: "a"(data), "Nd"(port));
+}
+
+inline void outw(uint16_t port, uint16_t data){
+    asm volatile ("outw %0, %1" :: "a"(data), "Nd"(port));
+}
+
+inline uint8_t inb(uint16_t port){
+    uint8_t byte = 0;
+    asm volatile ("inb %1, %0" : "=a"(byte) : "Nd"(port));
+    return byte;
+}
+
+inline uint16_t inw(uint16_t port){
+    uint16_t word = 0;
+    asm volatile ("inw %1, %0" : "=a"(word) : "Nd"(port));
+    return word;
+}
+/*
+TODO:
+Register module 
+IDENTIFY
+CREATE ((virtual)) FILES
+CREATE interface when reading and writing from virtual files
+make fini function to destroy global object, and free any remaining resources.
+*/
+
+#define ATA_DATA + 0
+#define ATA_ERROR + 1
+#define ATA_FEATURES + 1
+#define ATA_SECTOR_COUNT + 2
+#define ATA_SECTOR_NUMBER + 3
+#define ATA_CYLINDER_LOW + 4
+#define ATA_CYLINDER_HIGH + 5
+#define ATA_DRIVE_HEAD + 6
+#define ATA_STATUS + 7
+#define ATA_COMMAND + 7
+
+#define ATA_LBA_LOW ATA_SECTOR_NUMBER
+#define ATA_LBA_MID ATA_CYLINDER_LOW
+#define ATA_LBA_HIH ATA_CYLINDER_HIGH
+
+#define ATA_ALT_STATUS + 0
+#define ATA_DEVICE_CONTROL + 0
+#define ATA_DRIVE_ADDRESS + 1
+
+#define ATA_IDENTIFY 0xEC
+
+#define ATA_SLAVE_DRIVE 0xF0
+#define ATA_MASTER_DRIVE 0xE0
+
+#define ATA_IS_ATA(a) a[0] & 0x8000
+#define ATA_GET_SZ28(a) (a[60] | (a[61] << 16))
+#define ATA_IS_LBA48(a) (a[83] & (1 << 10))
+#define ATA_GET_SZ48L(a) (a[100] | (a[101] << 16))
+#define ATA_GET_SZ48H(a) (a[102] | (a[103] << 16))
+
+void fini();
+void ata_identify();
+
 void init(KOS_MAPI_FP module_api, uint32_t api_version){
-    uint16_t *t = (void *)0xb8000;
-    *t = 0xf000;
+    api = module_api;
+    api(MODULE_API_PRINT, MODULE_NAME, "KIDM Storage Driver Module v0.1.0\nSupported interfaces: \n");
     return;
+}
+
+void ata_identify(){
+    
+}
+
+void fini(){
+    //destroy all objects, free memory, and 
 }

src/kmodules/fs_driver.c

@@ -1,10 +1,14 @@
 #include <stdint.h>
 #include "modlib.h"
 
+#define MODULE_NAME "KIFSM"
+
 KOS_MAPI_FP api;
 
 void init(KOS_MAPI_FP module_api, uint32_t api_version){
-    uint16_t *t = (void *)0xb8002;
-    *t = 0xf000;
+    api = module_api;
+    
+    api(MODULE_API_PRINT, MODULE_NAME, "KIFSM Filesystem Driver Module v0.1.0\nSupported Filesystems:\n");
+    
     return;
 }

src/kmodules/modlib.h

@@ -1,6 +1,22 @@
 #pragma once
 #include <stdint.h>
-typedef void (*KOS_MAPI_FP)(unsigned int function, ...);
+
+#define MODULE_API_REGISTER 0 //registers the module as active using information provided from the module
+#define MODULE_API_ADDFUNC 1 //adds function to kernel API handler
+#define MODULE_API_DELFUNC 2 //delete function from kernel API handler
+#define MODULE_API_ADDINT 3 //set interrupt handler
+#define MODULE_API_DELINT 4 //delete interrupt handler
+#define MODULE_API_PRINT 5 //print to terminal
+#define MODULE_API_READ 6 //read from virtual file
+#define MODULE_API_WRITE 7 //write to virtual file
+#define MODULE_API_CREAT 8 //create a virtual file and assigns it to the the proper module (requires having a read and write function passed)
+#define MODULE_API_DELET 9 //delete a virtual file
+#define MODULE_API_MAP 10 //map physical address to virtual address
+#define MODULE_API_UNMAP 11 //unmap physical address to virtual address
+#define MODULE_API_MALLOC 12 //allocate memory in 4kb blocks
+#define MODULE_API_FREE 13 //free memory allocated by malloc
+
+typedef uint32_t (*KOS_MAPI_FP)(unsigned int function, ...);
 typedef struct module{
     void *init_entry;
     uint32_t id;