forked from KolibriOS/kolibrios
183 lines
6.2 KiB
PHP
183 lines
6.2 KiB
PHP
; HID mouse driver, part of USBHID driver.
|
|
|
|
; Global constants.
|
|
; They are assembled in a macro to separate code and data;
|
|
; the code is located at the point of "include 'mouse.inc'",
|
|
; the data are collected when workers_globals is instantiated.
|
|
macro workers_globals
|
|
{
|
|
; include global constants from previous workers
|
|
workers_globals
|
|
align 4
|
|
; Callbacks for HID layer.
|
|
mouse_driver:
|
|
dd mouse_driver_add_device
|
|
dd mouse_driver_disconnect
|
|
dd mouse_driver_begin_packet
|
|
dd mouse_driver_array_overflow?
|
|
dd mouse_driver_input_field
|
|
dd mouse_driver_end_packet
|
|
}
|
|
|
|
; Data that are specific for one mouse device.
|
|
struct mouse_device_data
|
|
buttons dd ? ; buttons that are currently pressed
|
|
dx dd ? ; current x moving
|
|
dy dd ? ; current y moving
|
|
wheel dd ? ; current wheel moving
|
|
hwheel dd ?
|
|
ends
|
|
|
|
; This procedure is called when HID layer detects a new mouse.
|
|
; in: ebx -> device_data from USB layer, edi -> collection
|
|
; out: eax = device-specific data or NULL on error
|
|
proc mouse_driver_add_device
|
|
; Get screen resolution so we can calculate absolute coordinates.
|
|
mov eax, 14
|
|
int 0x40
|
|
mov [screen_y], eax
|
|
and [screen_y], 0xffff
|
|
shr eax, 16
|
|
mov [screen_x], eax
|
|
; Just allocate memory; no initialization needed.
|
|
movi eax, sizeof.mouse_device_data
|
|
call Kmalloc
|
|
ret
|
|
endp
|
|
|
|
; This procedure is called when HID layer detects disconnect of a previously
|
|
; connected mouse.
|
|
; in: edi -> mouse_device_data (pointer returned from mouse_driver_add_device)
|
|
proc mouse_driver_disconnect
|
|
; Free the allocated memory.
|
|
mov eax, edi
|
|
call Kfree
|
|
ret
|
|
endp
|
|
|
|
; This procedure is called when HID layer starts processing a new input packet
|
|
; from a mouse.
|
|
; in: edi -> mouse_device_data (pointer returned from mouse_driver_add_device)
|
|
proc mouse_driver_begin_packet
|
|
; Zero all variables describing the current state.
|
|
mov [edi+mouse_device_data.buttons], 0
|
|
mov [edi+mouse_device_data.dx], 0
|
|
mov [edi+mouse_device_data.dy], 0
|
|
mov [edi+mouse_device_data.wheel], 0
|
|
mov [edi+mouse_device_data.hwheel], 0
|
|
ret
|
|
endp
|
|
|
|
; This procedure is called when HID layer processes every non-empty array field group.
|
|
; in: edi -> mouse_device_data (pointer returned from mouse_driver_add_device)
|
|
; in: ecx = fields count (always nonzero), edx = pointer to fields values
|
|
; in: esi -> report_field_group
|
|
; out: CF set => array is ok, CF cleared => array should be ignored
|
|
proc mouse_driver_array_overflow?
|
|
; no array fields, no overflows
|
|
stc
|
|
ret
|
|
endp
|
|
|
|
; This procedure is called from HID layer for every field.
|
|
; in: edi -> mouse_device_data (pointer returned from mouse_driver_add_device)
|
|
; in: ecx = field usage, edx = value, esi -> report_field_group
|
|
proc mouse_driver_input_field
|
|
; 1. Determine the handler. We process x/y moving, wheel and up to 32 buttons.
|
|
; Pass other fields to the default handler - default_driver_input_field if
|
|
; HID_DUMP_UNCLAIMED is enabled, just ignore otherwise.
|
|
cmp ecx, USAGE_GD_X
|
|
jz .x
|
|
cmp ecx, USAGE_GD_Y
|
|
jz .y
|
|
cmp ecx, USAGE_GD_WHEEL
|
|
jz .wheel
|
|
cmp ecx, 0xC0238
|
|
jz .hwheel
|
|
sub ecx, USAGE_BUTTON_PAGE + 1
|
|
jb .unclaimed
|
|
cmp ecx, 32
|
|
jae .unclaimed
|
|
; 2. This is a button.
|
|
; If a button is pressed, set the corresponding bit in the state.
|
|
; If a button is not pressed, do nothing.
|
|
test edx, edx
|
|
jz @f
|
|
bts [edi+mouse_device_data.buttons], ecx
|
|
@@:
|
|
if ~HID_DUMP_UNCLAIMED
|
|
.unclaimed:
|
|
end if
|
|
ret
|
|
if HID_DUMP_UNCLAIMED
|
|
.unclaimed:
|
|
add ecx, USAGE_BUTTON_PAGE + 1
|
|
jmp default_driver_input_field
|
|
end if
|
|
.x:
|
|
; 3. This is x moving. For relative fields, store the value in the state.
|
|
; Pass absolute field to the default handler.
|
|
test byte [esi+report_field_group.flags], HID_FIELD_RELATIVE
|
|
jz .relative_x
|
|
mov [edi+mouse_device_data.dx], edx
|
|
ret
|
|
.y:
|
|
; 4. This is y moving. For relative fields, store the value in the state,
|
|
; changing the sign: HID uses "mathematics" scheme with Y axis increasing from
|
|
; bottom to top, the kernel expects "programming" PS/2-style with Y axis
|
|
; increasing from top to bottom.
|
|
; Pass absolute fields to the default handler.
|
|
test byte [esi+report_field_group.flags], HID_FIELD_RELATIVE
|
|
jz .relative_y
|
|
neg edx
|
|
mov [edi+mouse_device_data.dy], edx
|
|
ret
|
|
.wheel:
|
|
; 5. This is wheel event. For relative fields, store the value in the state,
|
|
; changing the sign. Pass absolute fields to the default handler.
|
|
test byte [esi+report_field_group.flags], HID_FIELD_RELATIVE
|
|
jz .unclaimed
|
|
neg edx
|
|
mov [edi+mouse_device_data.wheel], edx
|
|
ret
|
|
.hwheel:
|
|
test byte [esi+report_field_group.flags], HID_FIELD_RELATIVE
|
|
jz .unclaimed
|
|
mov [edi+mouse_device_data.hwheel], edx
|
|
ret
|
|
.relative_x:
|
|
push ebx
|
|
mov eax, [screen_x]
|
|
mul edx
|
|
mov ebx, 0x8000
|
|
div ebx
|
|
mov [edi+mouse_device_data.dx], eax
|
|
or [edi+mouse_device_data.buttons], 0x80000000
|
|
pop ebx
|
|
ret
|
|
.relative_y:
|
|
push ebx
|
|
mov eax, [screen_y]
|
|
mul edx
|
|
mov ebx, 0x8000
|
|
div ebx
|
|
mov [edi+mouse_device_data.dy], eax
|
|
or [edi+mouse_device_data.buttons], 0x40000000
|
|
pop ebx
|
|
ret
|
|
endp
|
|
|
|
; This procedure is called when HID layer ends processing a new input packet
|
|
; from a mouse.
|
|
; in: edi -> mouse_device_data (pointer returned from mouse_driver_add_device)
|
|
proc mouse_driver_end_packet
|
|
; Call the kernel, passing collected state.
|
|
stdcall SetMouseData, \
|
|
[edi+mouse_device_data.buttons], \
|
|
[edi+mouse_device_data.dx], \
|
|
[edi+mouse_device_data.dy], \
|
|
[edi+mouse_device_data.wheel], \
|
|
[edi+mouse_device_data.hwheel]
|
|
ret
|
|
endp
|