xenfb: Use Input Handlers directly
Avoid the unneccessary calls through the input-legacy.c file by using the qemu_input_handler_*() calls directly. This did require reworking the event and sync handlers to use the reverse mapping from qcode to linux using qemu_input_qcode_to_linux(). Removes the scancode2linux mapping, and supporting documention. Signed-off-by: Owen Smith <owen.smith@citrix.com> Reviewed-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Stefano Stabellini <sstabellini@kernel.org> Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
This commit is contained in:
Owen Smith
Stefano Stabellini
parent
de80d78594
commit
a1ccbafded
@ -27,6 +27,7 @@
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#include "qemu/osdep.h"
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#include "hw/hw.h"
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#include "ui/input.h"
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#include "ui/console.h"
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#include "hw/xen/xen_backend.h"
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@ -51,9 +52,10 @@ struct common {
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struct XenInput {
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struct common c;
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int abs_pointer_wanted; /* Whether guest supports absolute pointer */
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int button_state; /* Last seen pointer button state */
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int extended;
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QEMUPutMouseEntry *qmouse;
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QemuInputHandlerState *qkbd;
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QemuInputHandlerState *qmou;
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int axis[INPUT_AXIS__MAX];
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int wheel;
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};
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#define UP_QUEUE 8
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@ -119,79 +121,6 @@ static void common_unbind(struct common *c)
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}
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/* -------------------------------------------------------------------- */
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#if 0
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/*
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* These two tables are not needed any more, but left in here
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* intentionally as documentation, to show how scancode2linux[]
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* was generated.
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*
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* Tables to map from scancode to Linux input layer keycode.
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* Scancodes are hardware-specific. These maps assumes a
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* standard AT or PS/2 keyboard which is what QEMU feeds us.
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*/
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const unsigned char atkbd_set2_keycode[512] = {
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0, 67, 65, 63, 61, 59, 60, 88, 0, 68, 66, 64, 62, 15, 41,117,
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0, 56, 42, 93, 29, 16, 2, 0, 0, 0, 44, 31, 30, 17, 3, 0,
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0, 46, 45, 32, 18, 5, 4, 95, 0, 57, 47, 33, 20, 19, 6,183,
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0, 49, 48, 35, 34, 21, 7,184, 0, 0, 50, 36, 22, 8, 9,185,
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0, 51, 37, 23, 24, 11, 10, 0, 0, 52, 53, 38, 39, 25, 12, 0,
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0, 89, 40, 0, 26, 13, 0, 0, 58, 54, 28, 27, 0, 43, 0, 85,
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0, 86, 91, 90, 92, 0, 14, 94, 0, 79,124, 75, 71,121, 0, 0,
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82, 83, 80, 76, 77, 72, 1, 69, 87, 78, 81, 74, 55, 73, 70, 99,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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217,100,255, 0, 97,165, 0, 0,156, 0, 0, 0, 0, 0, 0,125,
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173,114, 0,113, 0, 0, 0,126,128, 0, 0,140, 0, 0, 0,127,
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159, 0,115, 0,164, 0, 0,116,158, 0,150,166, 0, 0, 0,142,
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157, 0, 0, 0, 0, 0, 0, 0,155, 0, 98, 0, 0,163, 0, 0,
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226, 0, 0, 0, 0, 0, 0, 0, 0,255, 96, 0, 0, 0,143, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0,107, 0,105,102, 0, 0,112,
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110,111,108,112,106,103, 0,119, 0,118,109, 0, 99,104,119, 0,
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};
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const unsigned char atkbd_unxlate_table[128] = {
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0,118, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85,102, 13,
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21, 29, 36, 45, 44, 53, 60, 67, 68, 77, 84, 91, 90, 20, 28, 27,
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35, 43, 52, 51, 59, 66, 75, 76, 82, 14, 18, 93, 26, 34, 33, 42,
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50, 49, 58, 65, 73, 74, 89,124, 17, 41, 88, 5, 6, 4, 12, 3,
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11, 2, 10, 1, 9,119,126,108,117,125,123,107,115,116,121,105,
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114,122,112,113,127, 96, 97,120, 7, 15, 23, 31, 39, 47, 55, 63,
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71, 79, 86, 94, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 87,111,
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19, 25, 57, 81, 83, 92, 95, 98, 99,100,101,103,104,106,109,110
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};
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#endif
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/*
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* for (i = 0; i < 128; i++) {
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* scancode2linux[i] = atkbd_set2_keycode[atkbd_unxlate_table[i]];
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* scancode2linux[i | 0x80] = atkbd_set2_keycode[atkbd_unxlate_table[i] | 0x80];
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* }
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*/
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static const unsigned char scancode2linux[512] = {
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
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16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
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32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
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48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
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64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
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80, 81, 82, 83, 99, 0, 86, 87, 88,117, 0, 0, 95,183,184,185,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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93, 0, 0, 89, 0, 0, 85, 91, 90, 92, 0, 94, 0,124,121, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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165, 0, 0, 0, 0, 0, 0, 0, 0,163, 0, 0, 96, 97, 0, 0,
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113,140,164, 0,166, 0, 0, 0, 0, 0,255, 0, 0, 0,114, 0,
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115, 0,150, 0, 0, 98,255, 99,100, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0,119,119,102,103,104, 0,105,112,106,118,107,
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108,109,110,111, 0, 0, 0, 0, 0, 0, 0,125,126,127,116,142,
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0, 0, 0,143, 0,217,156,173,128,159,158,157,155,226, 0,112,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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};
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/* Send an event to the keyboard frontend driver */
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static int xenfb_kbd_event(struct XenInput *xenfb,
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union xenkbd_in_event *event)
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@ -262,36 +191,28 @@ static int xenfb_send_position(struct XenInput *xenfb,
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/*
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* Send a key event from the client to the guest OS
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* QEMU gives us a raw scancode from an AT / PS/2 style keyboard.
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* QEMU gives us a QCode.
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* We have to turn this into a Linux Input layer keycode.
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*
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* Extra complexity from the fact that with extended scancodes
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* (like those produced by arrow keys) this method gets called
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* twice, but we only want to send a single event. So we have to
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* track the '0xe0' scancode state & collapse the extended keys
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* as needed.
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*
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* Wish we could just send scancodes straight to the guest which
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* already has code for dealing with this...
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*/
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static void xenfb_key_event(void *opaque, int scancode)
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static void xenfb_key_event(DeviceState *dev, QemuConsole *src,
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InputEvent *evt)
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{
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struct XenInput *xenfb = opaque;
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int down = 1;
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struct XenInput *xenfb = (struct XenInput *)dev;
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InputKeyEvent *key = evt->u.key.data;
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int qcode = qemu_input_key_value_to_qcode(key->key);
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int lnx;
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if (scancode == 0xe0) {
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xenfb->extended = 1;
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return;
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} else if (scancode & 0x80) {
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scancode &= 0x7f;
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down = 0;
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if (qcode < qemu_input_map_qcode_to_linux_len) {
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lnx = qemu_input_map_qcode_to_linux[qcode];
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if (lnx) {
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trace_xenfb_key_event(xenfb, lnx, key->down);
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xenfb_send_key(xenfb, key->down, lnx);
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}
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}
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if (xenfb->extended) {
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scancode |= 0x80;
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xenfb->extended = 0;
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}
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trace_xenfb_key_event(opaque, scancode2linux[scancode], down);
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xenfb_send_key(xenfb, down, scancode2linux[scancode]);
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}
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/*
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@ -303,45 +224,118 @@ static void xenfb_key_event(void *opaque, int scancode)
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* given any button up/down events, so have to track changes in
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* the button state.
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*/
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static void xenfb_mouse_event(void *opaque,
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int dx, int dy, int dz, int button_state)
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static void xenfb_mouse_event(DeviceState *dev, QemuConsole *src,
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InputEvent *evt)
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{
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struct XenInput *xenfb = opaque;
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QemuConsole *con = qemu_console_lookup_by_index(0);
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struct XenInput *xenfb = (struct XenInput *)dev;
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InputBtnEvent *btn;
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InputMoveEvent *move;
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QemuConsole *con;
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DisplaySurface *surface;
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int dw, dh, i;
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int scale;
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if (!con) {
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xen_pv_printf(&xenfb->c.xendev, 0, "No QEMU console available");
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return;
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switch (evt->type) {
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case INPUT_EVENT_KIND_BTN:
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btn = evt->u.btn.data;
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switch (btn->button) {
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case INPUT_BUTTON_LEFT:
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xenfb_send_key(xenfb, btn->down, BTN_LEFT);
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break;
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case INPUT_BUTTON_RIGHT:
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xenfb_send_key(xenfb, btn->down, BTN_LEFT + 1);
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break;
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case INPUT_BUTTON_MIDDLE:
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xenfb_send_key(xenfb, btn->down, BTN_LEFT + 2);
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break;
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case INPUT_BUTTON_WHEEL_UP:
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if (btn->down) {
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xenfb->wheel--;
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}
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break;
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case INPUT_BUTTON_WHEEL_DOWN:
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if (btn->down) {
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xenfb->wheel++;
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}
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break;
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default:
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break;
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}
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break;
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case INPUT_EVENT_KIND_ABS:
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move = evt->u.abs.data;
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con = qemu_console_lookup_by_index(0);
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if (!con) {
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xen_pv_printf(&xenfb->c.xendev, 0, "No QEMU console available");
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return;
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}
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surface = qemu_console_surface(con);
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switch (move->axis) {
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case INPUT_AXIS_X:
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scale = surface_width(surface) - 1;
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break;
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case INPUT_AXIS_Y:
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scale = surface_height(surface) - 1;
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break;
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default:
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scale = 0x8000;
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break;
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}
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xenfb->axis[move->axis] = move->value * scale / 0x7fff;
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break;
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case INPUT_EVENT_KIND_REL:
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move = evt->u.rel.data;
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xenfb->axis[move->axis] += move->value;
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break;
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default:
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break;
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}
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surface = qemu_console_surface(con);
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dw = surface_width(surface);
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dh = surface_height(surface);
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trace_xenfb_mouse_event(opaque, dx, dy, dz, button_state,
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xenfb->abs_pointer_wanted);
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if (xenfb->abs_pointer_wanted)
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xenfb_send_position(xenfb,
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dx * (dw - 1) / 0x7fff,
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dy * (dh - 1) / 0x7fff,
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dz);
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else
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xenfb_send_motion(xenfb, dx, dy, dz);
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for (i = 0 ; i < 8 ; i++) {
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int lastDown = xenfb->button_state & (1 << i);
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int down = button_state & (1 << i);
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if (down == lastDown)
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continue;
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if (xenfb_send_key(xenfb, down, BTN_LEFT+i) < 0)
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return;
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}
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xenfb->button_state = button_state;
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}
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static void xenfb_mouse_sync(DeviceState *dev)
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{
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struct XenInput *xenfb = (struct XenInput *)dev;
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trace_xenfb_mouse_event(xenfb, xenfb->axis[INPUT_AXIS_X],
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xenfb->axis[INPUT_AXIS_Y],
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xenfb->wheel, 0,
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xenfb->abs_pointer_wanted);
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if (xenfb->abs_pointer_wanted) {
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xenfb_send_position(xenfb, xenfb->axis[INPUT_AXIS_X],
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xenfb->axis[INPUT_AXIS_Y],
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xenfb->wheel);
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} else {
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xenfb_send_motion(xenfb, xenfb->axis[INPUT_AXIS_X],
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xenfb->axis[INPUT_AXIS_Y],
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xenfb->wheel);
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xenfb->axis[INPUT_AXIS_X] = 0;
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xenfb->axis[INPUT_AXIS_Y] = 0;
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}
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xenfb->wheel = 0;
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}
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static QemuInputHandler xenfb_keyboard = {
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.name = "Xen PV Keyboard",
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.mask = INPUT_EVENT_MASK_KEY,
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.event = xenfb_key_event,
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};
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static QemuInputHandler xenfb_abs_mouse = {
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.name = "Xen PV Mouse",
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.mask = INPUT_EVENT_MASK_BTN | INPUT_EVENT_MASK_ABS,
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.event = xenfb_mouse_event,
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.sync = xenfb_mouse_sync,
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};
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static QemuInputHandler xenfb_rel_mouse = {
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.name = "Xen PV Mouse",
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.mask = INPUT_EVENT_MASK_BTN | INPUT_EVENT_MASK_REL,
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.event = xenfb_mouse_event,
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.sync = xenfb_mouse_sync,
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};
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static int input_init(struct XenDevice *xendev)
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{
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xenstore_write_be_int(xendev, "feature-abs-pointer", 1);
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@ -357,7 +351,6 @@ static int input_initialise(struct XenDevice *xendev)
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if (rc != 0)
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return rc;
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qemu_add_kbd_event_handler(xenfb_key_event, in);
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return 0;
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}
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@ -370,24 +363,31 @@ static void input_connected(struct XenDevice *xendev)
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in->abs_pointer_wanted = 0;
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}
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if (in->qmouse) {
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qemu_remove_mouse_event_handler(in->qmouse);
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if (in->qkbd) {
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qemu_input_handler_unregister(in->qkbd);
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}
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if (in->qmou) {
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qemu_input_handler_unregister(in->qmou);
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}
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trace_xenfb_input_connected(xendev, in->abs_pointer_wanted);
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in->qmouse = qemu_add_mouse_event_handler(xenfb_mouse_event, in,
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in->abs_pointer_wanted,
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"Xen PVFB Mouse");
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in->qkbd = qemu_input_handler_register((DeviceState *)in, &xenfb_keyboard);
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in->qmou = qemu_input_handler_register((DeviceState *)in,
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in->abs_pointer_wanted ? &xenfb_abs_mouse : &xenfb_rel_mouse);
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}
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static void input_disconnect(struct XenDevice *xendev)
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{
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struct XenInput *in = container_of(xendev, struct XenInput, c.xendev);
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if (in->qmouse) {
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qemu_remove_mouse_event_handler(in->qmouse);
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in->qmouse = NULL;
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if (in->qkbd) {
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qemu_input_handler_unregister(in->qkbd);
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in->qkbd = NULL;
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}
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if (in->qmou) {
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qemu_input_handler_unregister(in->qmou);
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in->qmou = NULL;
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}
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qemu_add_kbd_event_handler(NULL, NULL);
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common_unbind(&in->c);
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}
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