Add IDE/ATA disk driver with devicefs integration

Implement PIO-mode IDE driver that scans primary and secondary channels
for ATA hard drives and ATAPI CD/DVD drives using IDENTIFY commands.

Features:
- Scans 4 possible devices (2 channels x 2 drives each)
- ATA IDENTIFY DEVICE for hard drives
- ATAPI IDENTIFY PACKET DEVICE for CD/DVD drives
- PIO-mode 28-bit LBA sector read/write for ATA drives
- Model string extraction and sector count parsing
- Registers as kernel driver via REGISTER_DRIVER macro
- Registers devices with devicefs: ATA → hdd class, ATAPI → cd class
- Added inw/outw to port_io.h for 16-bit I/O

Tested: QEMU detects hdd1 (QEMU HARDDISK) and cd1 (QEMU DVD-ROM).

This commit is contained in:

2026-02-23 13:57:00 +00:00

parent c12d49dea0

commit c07ec030a7

4 changed files with 491 additions and 0 deletions

									
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src/CMakeLists.txt
									
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				@@ -20,6 +20,7 @@ add_executable(kernel

				    vfs.c

				    initrd_fs.c

				    devicefs.c

				    ide.c

				    env.c

				    keyboard.c

				    interrupts.S

Add IDE/ATA disk driver with devicefs integration

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src/CMakeLists.txt

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