commit 50addb6fd22cd5dc45b80be2a1214ab81c8811ae
Author: ramenu <armansoor@missingno.dev>
Date:   Thu Mar 28 18:43:18 2024 -0400

    first commit

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..57cda7e
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,32 @@
+/kernel
+/contrib
+/build.txt
+/kolibri.img
+/nvm.img
+/programs
+/skins
+/_tools
+/data
+/.nvim
+/.tup
+/.svn
+/tup.config.template
+/drivers/ethernet
+/drivers/examples
+/drivers/gpio
+/drivers/include
+/drivers/audio
+/drivers/ddk
+/drivers/devman
+/drivers/mouse
+/drivers/old
+/drivers/sdhci
+/drivers/sensors
+/drivers/unfinished
+/drivers/usb
+/drivers/video
+/drivers/disk
+/drivers/*.lua
+/drivers/*.inc
+/drivers/*.asm
+/drivers/**/*.sys
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..c81cbf3
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,18 @@
+QEMU=qemu-system-i386
+ASM=./drivers/nvme/nvme.asm
+NVME_SYS=./drivers/nvme/nvme.sys
+
+all: MOUNT
+.PHONY: all
+
+run: MOUNT
+	$(QEMU) -m 128 -fda ./kolibri.img -boot a -drive file=nvm.img,if=none,id=nvm -device nvme,serial=deadbeef,drive=nvm
+.PHONY: run
+
+MOUNT: $(NVME_SYS)
+	@mcopy -moi kolibri.img $(NVME_SYS) ::DRIVERS/NVME.SYS
+.PHONY: MOUNT
+
+$(NVME_SYS): $(ASM)
+	@cd ./drivers/nvme && $(MAKE)
+
diff --git a/drivers/nvme/Makefile b/drivers/nvme/Makefile
new file mode 100644
index 0000000..8680eb0
--- /dev/null
+++ b/drivers/nvme/Makefile
@@ -0,0 +1,9 @@
+FASM = fasm
+KPACK = kpack
+
+all:
+	$(FASM) nvme.asm
+	$(KPACK) nvme.sys
+
+clean:
+	rm *.sys
diff --git a/drivers/nvme/nvme.asm b/drivers/nvme/nvme.asm
new file mode 100644
index 0000000..a9ff157
--- /dev/null
+++ b/drivers/nvme/nvme.asm
@@ -0,0 +1,158 @@
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;                                                              ;;
+;; Copyright (C) KolibriOS team 2004-2015. All rights reserved. ;;
+;; Distributed under terms of the GNU General Public License    ;;
+;;                                                              ;;
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+;driver sceletone
+
+format PE DLL native
+entry START
+
+DEBUG        equ 1
+
+API_VERSION     equ 0  ;debug
+
+STRIDE       equ 4      ;size of row in devices table
+
+SRV_GETVERSION  equ 0
+
+section ".flat" code readable writable executable
+include "../proc32.inc"
+include "../struct.inc"
+include "../macros.inc"
+include "../peimport.inc"
+include "../pci.inc"
+include "../../programs/debug.inc"
+
+proc START c, reason:dword
+        cmp     [reason], DRV_ENTRY
+        jne     .exit
+.entry:
+        push    esi
+     if DEBUG
+        mov     esi, msgInit
+        invoke  SysMsgBoardStr
+     end if
+        call    detect
+        pop     esi
+        test    eax, eax
+        jz      .exit
+
+        invoke  RegService, my_service, service_proc
+        ret
+.exit:
+        xor     eax, eax
+        ret
+endp
+
+proc service_proc stdcall, ioctl:dword
+
+        mov     ebx, [ioctl]
+        mov     eax, [ebx+IOCTL.io_code]
+        cmp     eax, SRV_GETVERSION
+        jne     @F
+
+        mov     eax, [ebx+IOCTL.output]
+        cmp     [ebx+IOCTL.out_size], 4
+        jne     .fail
+        mov     dword [eax], API_VERSION
+        xor     eax, eax
+        ret
+@@:
+.fail:
+        or      eax, -1
+        ret
+endp
+
+proc detect
+        push    ebx
+        invoke  GetPCIList
+		mov 	edx, eax
+.check_dev:
+		mov 	ecx, [eax+PCIDEV.class]
+		and		ecx, 0x00ffff00 ; retrieve class/subclass code only
+		;if DEBUG
+		;	mov esi, msgPciClass
+		;	invoke SysMsgBoardStr
+		;	debug_print_hex ecx
+		;	mov esi, newLine
+		;	invoke SysMsgBoardStr
+		;end if
+		cmp 	ecx, 0x00010800 ; Mass Storage Controller - Non-Volatile Memory Controller
+		je		.found_nvme
+.next_dev:
+		mov		eax, [eax + PCIDEV.fd]
+		cmp		eax, edx
+		jne 	.check_dev
+
+		; no more PCI devices to enumerate?
+        xor     eax, eax
+        pop     ebx
+        ret
+.found_nvme:
+		mov esi, msgFound
+		invoke SysMsgBoardStr
+.check_cap:
+		push eax
+		movzx ebx, [eax + PCIDEV.bus]
+		mov [bus], ebx
+		movzx ebx, [eax + PCIDEV.devfn]
+		mov [devfn], ebx
+		invoke PciRead16, [bus], [devfn], PCI_header00.status
+		test ax, 0x10 ; check capabilities list bit
+		jnz .got_cap
+		pop eax
+.got_cap:
+		if DEBUG
+			mov esi, msgHasCap
+			invoke SysMsgBoardStr
+		end if
+		invoke PciRead8, [bus], [devfn], PCI_header00.cap_ptr
+		and eax, 11111100b
+		mov edi, eax
+@@:
+		invoke PciRead32, [bus], [devfn], edi
+		mov ecx, eax
+		and ecx, 0xff
+		if DEBUG
+			mov esi, msgCap
+			invoke SysMsgBoardStr
+			debug_print_hex ecx
+			mov esi, newLine
+			invoke SysMsgBoardStr
+		end if
+		mov eax, ecx
+		movzx edi, ah
+		test edi, edi
+		jnz @b
+
+		; return successfully
+		pop eax
+        xor     eax, eax
+        inc     eax
+        pop     ebx
+        ret
+endp
+
+; uninitialized data
+bus			dd ?
+devfn		dd ?
+
+;all initialized data place here
+
+align 4
+my_service   db "NVME Service",0  ;max 16 chars include zero
+
+msgInit      db "detecting NVME hardware...",13,10,0
+msgFound     db "found NVME device",13,10,0
+msgFail      db "NVME device not found",13,10,0
+msgHasCap    db "NVME device has capabilities",13,10,0
+msgCap 		 db "Capability: ",0
+msgPciClass  db "PCI class: ",0
+newLine		 db 13,10,0
+
+align 4
+data fixups
+end data