From c96b289dc49c18ac36fb7e13242e5f855a56840e Mon Sep 17 00:00:00 2001
From: Carlos Maiolino <cem@toxiclabs.cc>
Date: Tue, 24 Feb 2026 08:13:48 +0100
Subject: Add ata driver

Enable the kernel to read from an ATA device

Signed-off-by: Carlos Maiolino <cem@toxiclabs.cc>
---
 src/drivers/ata.c | 34 ++++++++++++++++++++++++++++++++++
 src/kernel.c      |  4 ++++
 2 files changed, 38 insertions(+)
 create mode 100644 src/drivers/ata.c

(limited to 'src')

diff --git a/src/drivers/ata.c b/src/drivers/ata.c
new file mode 100644
index 0000000..82df0e3
--- /dev/null
+++ b/src/drivers/ata.c
@@ -0,0 +1,34 @@
+#include <toxic/io.h>
+
+int
+ata_read_sector(
+	int lba,
+	int total,
+	void *buf)
+{
+	int i, j;
+	unsigned short *ptr; /* Get 2 bytes at a time from the controller */
+
+	outb(0x1F6, (lba >> 24) | 0xE0);
+	outb(0x1F2, total);
+	outb(0x1F3, (unsigned char)(lba & 0xff));
+	outb(0x1F4, (unsigned char)(lba >> 8));
+	outb(0x1F5, (unsigned char)(lba >> 16));
+	outb(0x1F7, 0x20);
+
+	ptr = (unsigned short *)buf;
+
+	for (i = 0; i < total; i++) {
+		char c = insb(0x1F7);
+		/* This should be implemented in interrupts */
+		while (!(c & 0x08))
+			c = insb(0x1F7);
+
+		for (j = 0; j < 256; j++) {
+			*ptr = insw(0x1F0);
+			ptr++;
+		}
+	}
+
+	return 0;
+}
diff --git a/src/kernel.c b/src/kernel.c
index 01de04f..d917bd8 100644
--- a/src/kernel.c
+++ b/src/kernel.c
@@ -7,11 +7,14 @@
 #include <toxic/io.h>
 #include <mm/kernel_heap.h>
 #include <mm/paging.h>
+#include <ata/ata.h>
 
 static struct page_directory *kernel_directory;
 
 void start_kernel()
 {
+	char buf[512] = {0};
+
 	init_display(2);
 	vprintl("Hello World!!!\n");
 	vprintl("Testing it!!!\n");
@@ -48,4 +51,5 @@ void start_kernel()
 
 	kfree(ptr);
 
+	ata_read_sector(0, 1, buf);
 }
-- 
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