initial commit

src/drivers/mouse_ps2.asm

@@ -0,0 +1,127 @@
+;
+; controlleur de souris via le i8042 (PC Classique)
+;
+
+%define	PS2_PORT_BUFFER		0x60
+%define	PS2_PORT_CTRL			0x64
+
+%define	MOUSE_CMD_RESET		0xff
+%define	MOUSE_CMD_DEFAULT	0xf6
+%define MOUSE_EN_STREAM		0xf4
+%define MOUSE_DIS_STREAM	0xf5
+
+mouse_arrow:
+						dw 1001111111111111b    ; 0x9FFF
+						dw 1000111111111111b    ; 0x8FFF
+						dw 1000011111111111b    ; 0x87FF
+						dw 1000001111111111b    ; 0x83FF
+						dw 1000000111111111b    ; 0x81FF
+						dw 1000000011111111b    ; 0x80FF
+						dw 1000000001111111b    ; 0x807F
+						dw 1000000000111111b    ; 0x803F
+						dw 1000000000011111b    ; 0x801F
+						dw 1000000000001111b    ; 0x800F
+						dw 1000000011111111b    ; 0x80FF
+						dw 1000100001111111b    ; 0x887F
+						dw 1001100001111111b    ; 0x987F
+						dw 1111110000111111b    ; 0xFC3F
+						dw 1111110000111111b    ; 0xFC3F
+						dw 1111111000111111b    ; 0xFE3F
+						dw 0000000000000000b    ; 0x0000
+						dw 0010000000000000b    ; 0x2000
+						dw 0011000000000000b    ; 0x3000
+						dw 0011100000000000b    ; 0x3800
+						dw 0011110000000000b    ; 0x3C00
+						dw 0011111000000000b    ; 0x3E00
+						dw 0011111100000000b    ; 0x3F00
+						dw 0011111110000000b    ; 0x3F80
+						dw 0011111111000000b    ; 0x3FC0
+						dw 0011111000000000b    ; 0x3E00
+						dw 0011011000000000b    ; 0x3600
+						dw 0010001100000000b    ; 0x2300
+						dw 0000001100000000b    ; 0x0300
+						dw 0000000110000000b    ; 0x0180
+						dw 0000000110000000b    ; 0x0180
+						dw 0000000000000000b    ; 0x0000
+
+mouse_init:
+						; Activer le port souris
+						mov				ax, BDA_SEGMENT
+						mov				ds,ax
+						
+						; effacer les variables du drivers
+						mov				[BDA_MOUSE_IDX],0
+						mov				dword [BDA_MOUSE_BUFFER],0
+						
+						mov 			al, 0xA8
+						out 			PS2_PORT_CTRL, al
+
+						; Lire le command byte
+						mov 			al, 0x20
+						out 			PS2_PORT_CTRL, al
+						in  			al, PS2_PORT_BUFFER
+
+						; Activer IRQ12 (bit 1)
+						or  			al, 0x02
+
+						; Réécrire le command byte
+						mov 			ah, al
+						mov 			al, PS2_PORT_BUFFER
+						out 			PS2_PORT_CTRL, al
+						mov 			al, ah
+						out 			PS2_PORT_BUFFER, al
+						ret
+
+; envoyer une commande souris						
+mouse_sendcmd:
+.wait:
+						in  			al, PS2_PORT_CTRL
+						test 			al, 2
+						jnz 			.wait
+						mov 			al, 0xD4
+						out 			PS2_PORT_CTRL, al
+
+.wait2:
+						in  			al, PS2_PORT_CTRL
+						test 			al, 2
+						jnz 			.wait2
+						mov 			al, bl        ; BL = commande souris
+						out 			PS2_PORT_BUFFER, al
+						ret
+
+mouse_handler:
+					push 				ax
+					push 				bx
+					
+					; use BDA segment
+					push				ds
+					mov					ax,BDA_SEGMENT
+					mov					ds,ax
+					xor					bx,bx
+
+					in  				al, PS2_PORT_BUFFER   ; lire octet souris
+					mov 				[BDA_MOUSE_BUFFER + BDA_MOUSE_IDX], al
+					inc					[BDA_MOUSE_IDX]
+					
+					cmp 				[BDA_MOUSE_IDX], 3
+					jne 				.done
+
+					mov 				[BDA_MOUSE_IDX], 0
+					; decode buffer
+					mov					al, [BDA_MOUSE_BUFFER+1]
+					cbw
+					add					[BDA_MOUSE_X], ax
+					
+					mov					al, [BDA_MOUSE_BUFFER+2]
+					cbw
+					sub					[BDA_MOUSE_Y], ax
+
+.done:
+					mov 				al, 0x20
+					out 				0xA0, al          ; EOI PIC esclave
+					out 				0x20, al          ; EOI PIC maître
+					
+					pop					ds
+					pop 				bx
+					pop 				ax
+					iret