feat: add function table and fix determine_active_nsids

drivers/nvme/nvme.asm

@@ -88,6 +88,9 @@ proc service_proc stdcall, ioctl:dword
 
 endp
 
+proc nvme_query_media stdcall
+endp
+
 proc set_cdw0 stdcall, pci:dword, y:dword, opcode:byte
 
 		stdcall get_new_cid, [pci], [y]
@@ -197,7 +200,6 @@ proc is_active_namespace stdcall, pci:dword, nsid:dword
 		ret
 
 .is_active_nsid:
-		DEBUGF  DBG_INFO, "(NVMe) Active NSID: %u\n", [nsid]
 		invoke  KernelFree, esi
 		pop 	edi esi
 		xor 	eax, eax
@@ -213,32 +215,28 @@ endp
 ; to appropriate values
 proc determine_active_nsids stdcall, pci:dword
 
-		push 	ebx esi edi
+		push 	ebx esi
 		mov 	esi, [pci]
-		;mov 	edi, [edi + pcidev.nsids]
 		xor 	ebx, ebx
 		xor 	ecx, ecx
-		xor 	edx, edx
 		inc 	ecx
 
 .loop:
 		cmp 	ecx, dword [esi + pcidev.nn]
 		jg 		.ret
-		push 	ecx edx
+		push 	ecx
 		stdcall is_active_namespace, [pci], ecx
-		pop 	edx ecx
+		pop 	ecx
 		test 	eax, eax
 		jz 		.not_active_namespace
-		;mov 	dword [edi + ecx * 4], ecx
 		mov 	ebx, ecx
-		inc 	edx
 
 .not_active_namespace:
 		inc 	ecx
 		jmp 	.loop
 
 .ret:
-		pop 	edi esi ebx
+		pop 	edi esi
 		mov 	eax, ebx
 		ret
 
@@ -715,6 +713,7 @@ proc nvme_init stdcall, pci:dword
 		stdcall determine_active_nsids, [pci]
 		test 	eax, eax
 		jz 		.exit_fail ; No active NSIDS
+		DEBUGF  DBG_INFO, "(NVMe) Found active NSID: %u\n", eax
 		
 		DEBUGF  DBG_INFO, "(NVMe) Successfully initialized driver!\n"
       	xor     eax, eax
@@ -1053,6 +1052,16 @@ align 4
 		p_nvme_devices dd 0
 		pcidevs_len  dd 0
 		my_service   db "NVMe",0  ;max 16 chars include zero
+		disk_functions:
+			dd 		 disk_functions.end - disk_functions
+			dd 		 0 ; no close function
+			dd 		 0 ; no closemedia function
+			dd 		 nvme_query_media
+			dd 		 0 ; no read function (for now)
+			dd 		 0 ; no write function (for now)
+			dd 		 0 ; no flush function
+			dd 		 0 ; use default cache size
+		.end:
 		if __DEBUG__
 		include_debug_strings
 		end if