#include "config.h" // CONFIG_*
#include "usb.h" // usb_ctrlrequest
#include "biosvar.h" // GET_GLOBAL
+#include "ps2port.h" // ATKBD_CMD_GETID
struct usb_pipe *keyboard_pipe VAR16VISIBLE;
+struct usb_pipe *mouse_pipe VAR16VISIBLE;
/****************************************************************
* Setup
****************************************************************/
+// Send USB HID protocol message.
static int
-set_protocol(u32 endp, u16 val)
+set_protocol(struct usb_pipe *pipe, u16 val)
{
struct usb_ctrlrequest req;
req.bRequestType = USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
req.wValue = val;
req.wIndex = 0;
req.wLength = 0;
- return send_default_control(endp, &req, NULL);
+ return send_default_control(pipe, &req, NULL);
}
+// Send USB HID SetIdle request.
static int
-set_idle(u32 endp, u8 val)
+set_idle(struct usb_pipe *pipe, int ms)
{
struct usb_ctrlrequest req;
req.bRequestType = USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
req.bRequest = HID_REQ_SET_IDLE;
- req.wValue = val<<8;
+ req.wValue = (ms/4)<<8;
req.wIndex = 0;
req.wLength = 0;
- return send_default_control(endp, &req, NULL);
+ return send_default_control(pipe, &req, NULL);
}
-int
-usb_keyboard_init(u32 endp, struct usb_interface_descriptor *iface, int imax)
+#define KEYREPEATWAITMS 500
+#define KEYREPEATMS 33
+
+static int
+usb_kbd_init(struct usb_pipe *pipe, struct usb_endpoint_descriptor *epdesc)
{
if (! CONFIG_USB_KEYBOARD)
return -1;
if (keyboard_pipe)
+ // XXX - this enables the first found keyboard (could be random)
return -1;
- dprintf(2, "usb_keyboard_setup %x\n", endp);
- struct usb_endpoint_descriptor *epdesc = (void*)&iface[1];
- for (;;) {
- if ((void*)epdesc >= (void*)iface + imax
- || epdesc->bDescriptorType == USB_DT_INTERFACE) {
- dprintf(1, "No keyboard intr in?\n");
- return -1;
- }
- if (epdesc->bDescriptorType == USB_DT_ENDPOINT
- && (epdesc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN
- && ((epdesc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
- == USB_ENDPOINT_XFER_INT)
- && epdesc->wMaxPacketSize == 8)
- break;
- epdesc = (void*)epdesc + epdesc->bLength;
- }
- u32 inendp = mkendp(endp2cntl(endp), endp2devaddr(endp)
- , epdesc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK
- , endp2speed(endp), epdesc->wMaxPacketSize);
+ if (epdesc->wMaxPacketSize != 8)
+ return -1;
// Enable "boot" protocol.
- int ret = set_protocol(endp, 1);
+ int ret = set_protocol(pipe, 0);
if (ret)
return -1;
- // Only send reports on a new key event.
- ret = set_idle(endp, 0);
+ // Periodically send reports to enable key repeat.
+ ret = set_idle(pipe, KEYREPEATMS);
if (ret)
return -1;
- struct usb_pipe *pipe = alloc_intr_pipe(inendp, epdesc->bInterval);
- if (!pipe)
+ keyboard_pipe = alloc_intr_pipe(pipe, epdesc);
+ if (!keyboard_pipe)
return -1;
- keyboard_pipe = pipe;
+ dprintf(1, "USB keyboard initialized\n");
return 0;
}
-void
-usb_keyboard_setup()
+static int
+usb_mouse_init(struct usb_pipe *pipe, struct usb_endpoint_descriptor *epdesc)
{
- if (! CONFIG_USB_KEYBOARD)
- return;
- keyboard_pipe = NULL;
+ if (! CONFIG_USB_MOUSE)
+ return -1;
+ if (mouse_pipe)
+ // XXX - this enables the first found mouse (could be random)
+ return -1;
+
+ if (epdesc->wMaxPacketSize < 3 || epdesc->wMaxPacketSize > 8)
+ return -1;
+
+ // Enable "boot" protocol.
+ int ret = set_protocol(pipe, 0);
+ if (ret)
+ return -1;
+
+ mouse_pipe = alloc_intr_pipe(pipe, epdesc);
+ if (!mouse_pipe)
+ return -1;
+
+ dprintf(1, "USB mouse initialized\n");
+ return 0;
+}
+
+// Initialize a found USB HID device (if applicable).
+int
+usb_hid_init(struct usb_pipe *pipe
+ , struct usb_interface_descriptor *iface, int imax)
+{
+ if (! CONFIG_USB_KEYBOARD || ! CONFIG_USB_MOUSE)
+ return -1;
+ dprintf(2, "usb_hid_init %p\n", pipe);
+
+ if (iface->bInterfaceSubClass != USB_INTERFACE_SUBCLASS_BOOT)
+ // Doesn't support boot protocol.
+ return -1;
+
+ // Find intr in endpoint.
+ struct usb_endpoint_descriptor *epdesc = findEndPointDesc(
+ iface, imax, USB_ENDPOINT_XFER_INT, USB_DIR_IN);
+ if (!epdesc) {
+ dprintf(1, "No usb hid intr in?\n");
+ return -1;
+ }
+
+ if (iface->bInterfaceProtocol == USB_INTERFACE_PROTOCOL_KEYBOARD)
+ return usb_kbd_init(pipe, epdesc);
+ if (iface->bInterfaceProtocol == USB_INTERFACE_PROTOCOL_MOUSE)
+ return usb_mouse_init(pipe, epdesc);
+ return -1;
}
* Keyboard events
****************************************************************/
+// Mapping from USB key id to ps2 key sequence.
static u16 KeyToScanCode[] VAR16 = {
0x0000, 0x0000, 0x0000, 0x0000, 0x001e, 0x0030, 0x002e, 0x0020,
0x0012, 0x0021, 0x0022, 0x0023, 0x0017, 0x0024, 0x0025, 0x0026,
0x0048, 0x0049, 0x0052, 0x0053
};
+// Mapping from USB modifier id to ps2 key sequence.
static u16 ModifierToScanCode[] VAR16 = {
//lcntl, lshift, lalt, lgui, rcntl, rshift, ralt, rgui
0x001d, 0x002a, 0x0038, 0xe05b, 0xe01d, 0x0036, 0xe038, 0xe05c
};
+#define RELEASEBIT 0x80
+
+// Format of USB keyboard event data
struct keyevent {
u8 modifiers;
u8 reserved;
u8 keys[6];
};
+// Translate data from KeyToScanCode[] to calls to process_key().
static void
prockeys(u16 keys)
{
if (key == 0xe1) {
// Pause key
process_key(0xe1);
- process_key(0x1d | (keys & 0x80));
- process_key(0x45 | (keys & 0x80));
+ process_key(0x1d | (keys & RELEASEBIT));
+ process_key(0x45 | (keys & RELEASEBIT));
return;
}
process_key(key);
process_key(keys);
}
+// Handle a USB key press/release event.
+static void
+procscankey(u8 key, u8 flags)
+{
+ if (key >= ARRAY_SIZE(KeyToScanCode))
+ return;
+ u16 keys = GET_GLOBAL(KeyToScanCode[key]);
+ if (keys)
+ prockeys(keys | flags);
+}
+
+// Handle a USB modifier press/release event.
static void
+procmodkey(u8 mods, u8 flags)
+{
+ int i;
+ for (i=0; mods; i++)
+ if (mods & (1<<i)) {
+ // Modifier key change.
+ prockeys(GET_GLOBAL(ModifierToScanCode[i]) | flags);
+ mods &= ~(1<<i);
+ }
+}
+
+// Process USB keyboard data.
+static void noinline
handle_key(struct keyevent *data)
{
- dprintf(5, "Got key %x %x\n", data->modifiers, data->keys[0]);
- // XXX
+ dprintf(9, "Got key %x %x\n", data->modifiers, data->keys[0]);
+
+ // Load old keys.
+ u16 ebda_seg = get_ebda_seg();
+ struct usbkeyinfo old;
+ old.data = GET_EBDA2(ebda_seg, usbkey_last.data);
+
+ // Check for keys no longer pressed.
+ int addpos = 0;
int i;
- for (i=0; i<8; i++)
- if (data->modifiers & (1<<i))
- prockeys(GET_GLOBAL(ModifierToScanCode[i]));
+ for (i=0; i<ARRAY_SIZE(old.keys); i++) {
+ u8 key = old.keys[i];
+ if (!key)
+ break;
+ int j;
+ for (j=0;; j++) {
+ if (j>=ARRAY_SIZE(data->keys)) {
+ // Key released.
+ procscankey(key, RELEASEBIT);
+ if (i+1 >= ARRAY_SIZE(old.keys) || !old.keys[i+1])
+ // Last pressed key released - disable repeat.
+ old.repeatcount = 0xff;
+ break;
+ }
+ if (data->keys[j] == key) {
+ // Key still pressed.
+ data->keys[j] = 0;
+ old.keys[addpos++] = key;
+ break;
+ }
+ }
+ }
+ procmodkey(old.modifiers & ~data->modifiers, RELEASEBIT);
+
+ // Process new keys
+ procmodkey(data->modifiers & ~old.modifiers, 0);
+ old.modifiers = data->modifiers;
for (i=0; i<ARRAY_SIZE(data->keys); i++) {
u8 key = data->keys[i];
- if (key >= ARRAY_SIZE(KeyToScanCode))
- continue;
- key = GET_GLOBAL(KeyToScanCode[key]);
if (!key)
continue;
- prockeys(key);
+ // New key pressed.
+ procscankey(key, 0);
+ old.keys[addpos++] = key;
+ old.repeatcount = KEYREPEATWAITMS / KEYREPEATMS + 1;
}
- for (i=0; i<8; i++)
- if (data->modifiers & (1<<i))
- prockeys(GET_GLOBAL(ModifierToScanCode[i]) | 0x80);
+ if (addpos < ARRAY_SIZE(old.keys))
+ old.keys[addpos] = 0;
+
+ // Check for key repeat event.
+ if (addpos) {
+ if (!old.repeatcount)
+ procscankey(old.keys[addpos-1], 0);
+ else if (old.repeatcount != 0xff)
+ old.repeatcount--;
+ }
+
+ // Update old keys
+ SET_EBDA2(ebda_seg, usbkey_last.data, old.data);
}
-void
-usb_check_key()
+// Check if a USB keyboard event is pending and process it if so.
+static void
+usb_check_key(void)
{
if (! CONFIG_USB_KEYBOARD)
return;
handle_key(&data);
}
}
+
+// Test if USB keyboard is active.
+inline int
+usb_kbd_active(void)
+{
+ if (! CONFIG_USB_KEYBOARD)
+ return 0;
+ return GET_GLOBAL(keyboard_pipe) != NULL;
+}
+
+// Handle a ps2 style keyboard command.
+inline int
+usb_kbd_command(int command, u8 *param)
+{
+ if (! CONFIG_USB_KEYBOARD)
+ return -1;
+ dprintf(9, "usb keyboard cmd=%x\n", command);
+ switch (command) {
+ case ATKBD_CMD_GETID:
+ // Return the id of a standard AT keyboard.
+ param[0] = 0xab;
+ param[1] = 0x83;
+ return 0;
+ default:
+ return -1;
+ }
+}
+
+
+/****************************************************************
+ * Mouse events
+ ****************************************************************/
+
+// Format of USB mouse event data
+struct mouseevent {
+ u8 buttons;
+ u8 x, y;
+ u8 reserved[5];
+};
+
+// Process USB mouse data.
+static void
+handle_mouse(struct mouseevent *data)
+{
+ dprintf(9, "Got mouse b=%x x=%x y=%x\n", data->buttons, data->x, data->y);
+
+ s8 x = data->x, y = -data->y;
+ u8 flag = ((data->buttons & 0x7) | (1<<3)
+ | (x & 0x80 ? (1<<4) : 0) | (y & 0x80 ? (1<<5) : 0));
+ process_mouse(flag);
+ process_mouse(x);
+ process_mouse(y);
+}
+
+// Check if a USB mouse event is pending and process it if so.
+static void
+usb_check_mouse(void)
+{
+ if (! CONFIG_USB_MOUSE)
+ return;
+ struct usb_pipe *pipe = GET_GLOBAL(mouse_pipe);
+ if (!pipe)
+ return;
+
+ for (;;) {
+ struct mouseevent data;
+ int ret = usb_poll_intr(pipe, &data);
+ if (ret)
+ break;
+ handle_mouse(&data);
+ }
+}
+
+// Test if USB mouse is active.
+inline int
+usb_mouse_active(void)
+{
+ if (! CONFIG_USB_MOUSE)
+ return 0;
+ return GET_GLOBAL(mouse_pipe) != NULL;
+}
+
+// Handle a ps2 style mouse command.
+inline int
+usb_mouse_command(int command, u8 *param)
+{
+ if (! CONFIG_USB_MOUSE)
+ return -1;
+ dprintf(9, "usb mouse cmd=%x\n", command);
+ switch (command) {
+ case PSMOUSE_CMD_ENABLE:
+ case PSMOUSE_CMD_DISABLE:
+ case PSMOUSE_CMD_SETSCALE11:
+ return 0;
+ case PSMOUSE_CMD_SETSCALE21:
+ case PSMOUSE_CMD_SETRATE:
+ case PSMOUSE_CMD_SETRES:
+ // XXX
+ return 0;
+ case PSMOUSE_CMD_RESET_BAT:
+ case PSMOUSE_CMD_GETID:
+ // Return the id of a standard AT mouse.
+ param[0] = 0xaa;
+ param[1] = 0x00;
+ return 0;
+
+ case PSMOUSE_CMD_GETINFO:
+ param[0] = 0x00;
+ param[1] = 4;
+ param[2] = 100;
+ return 0;
+
+ default:
+ return -1;
+ }
+}
+
+// Check for USB events pending - called periodically from timer interrupt.
+void
+usb_check_event(void)
+{
+ usb_check_key();
+ usb_check_mouse();
+}
projects / seabios.git / blobdiff