^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Driver for Virtual PS/2 Mouse on VMware and QEMU hypervisors.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2014, VMware, Inc. All Rights Reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Twin device code is hugely inspired by the ALPS driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Authors:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Dmitry Torokhov <dmitry.torokhov@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Thomas Hellstrom <thellstrom@vmware.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/serio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/libps2.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <asm/hypervisor.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <asm/vmware.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include "psmouse.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include "vmmouse.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define VMMOUSE_PROTO_MAGIC 0x564D5868U
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * Main commands supported by the vmmouse hypervisor port.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define VMMOUSE_PROTO_CMD_GETVERSION 10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define VMMOUSE_PROTO_CMD_ABSPOINTER_DATA 39
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define VMMOUSE_PROTO_CMD_ABSPOINTER_STATUS 40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define VMMOUSE_PROTO_CMD_ABSPOINTER_COMMAND 41
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define VMMOUSE_PROTO_CMD_ABSPOINTER_RESTRICT 86
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * Subcommands for VMMOUSE_PROTO_CMD_ABSPOINTER_COMMAND
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define VMMOUSE_CMD_ENABLE 0x45414552U
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define VMMOUSE_CMD_DISABLE 0x000000f5U
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define VMMOUSE_CMD_REQUEST_RELATIVE 0x4c455252U
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define VMMOUSE_CMD_REQUEST_ABSOLUTE 0x53424152U
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define VMMOUSE_ERROR 0xffff0000U
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define VMMOUSE_VERSION_ID 0x3442554aU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #define VMMOUSE_RELATIVE_PACKET 0x00010000U
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define VMMOUSE_LEFT_BUTTON 0x20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #define VMMOUSE_RIGHT_BUTTON 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define VMMOUSE_MIDDLE_BUTTON 0x08
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * VMMouse Restrict command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #define VMMOUSE_RESTRICT_ANY 0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #define VMMOUSE_RESTRICT_CPL0 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #define VMMOUSE_RESTRICT_IOPL 0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #define VMMOUSE_MAX_X 0xFFFF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) #define VMMOUSE_MAX_Y 0xFFFF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #define VMMOUSE_VENDOR "VMware"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #define VMMOUSE_NAME "VMMouse"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) * struct vmmouse_data - private data structure for the vmmouse driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * @abs_dev: "Absolute" device used to report absolute mouse movement.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) * @phys: Physical path for the absolute device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) * @dev_name: Name attribute name for the absolute device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) struct vmmouse_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) struct input_dev *abs_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) char phys[32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) char dev_name[128];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) * Hypervisor-specific bi-directional communication channel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * implementing the vmmouse protocol. Should never execute on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * bare metal hardware.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) #define VMMOUSE_CMD(cmd, in1, out1, out2, out3, out4) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) ({ \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) unsigned long __dummy1, __dummy2; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) __asm__ __volatile__ (VMWARE_HYPERCALL : \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) "=a"(out1), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) "=b"(out2), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) "=c"(out3), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) "=d"(out4), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) "=S"(__dummy1), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) "=D"(__dummy2) : \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) "a"(VMMOUSE_PROTO_MAGIC), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) "b"(in1), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) "c"(VMMOUSE_PROTO_CMD_##cmd), \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) "d"(0) : \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) "memory"); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) })
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * vmmouse_report_button - report button state on the correct input device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) * @psmouse: Pointer to the psmouse struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) * @abs_dev: The absolute input device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) * @rel_dev: The relative input device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) * @pref_dev: The preferred device for reporting
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) * @code: Button code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) * @value: Button value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) * Report @value and @code on @pref_dev, unless the button is already
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) * pressed on the other device, in which case the state is reported on that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) * device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) static void vmmouse_report_button(struct psmouse *psmouse,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) struct input_dev *abs_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) struct input_dev *rel_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) struct input_dev *pref_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) unsigned int code, int value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) if (test_bit(code, abs_dev->key))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) pref_dev = abs_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) else if (test_bit(code, rel_dev->key))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) pref_dev = rel_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) input_report_key(pref_dev, code, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) * vmmouse_report_events - process events on the vmmouse communications channel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) * @psmouse: Pointer to the psmouse struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) * This function pulls events from the vmmouse communications channel and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * reports them on the correct (absolute or relative) input device. When the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) * communications channel is drained, or if we've processed more than 255
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) * psmouse commands, the function returns PSMOUSE_FULL_PACKET. If there is a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) * host- or synchronization error, the function returns PSMOUSE_BAD_DATA in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) * the hope that the caller will reset the communications channel.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) static psmouse_ret_t vmmouse_report_events(struct psmouse *psmouse)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) struct input_dev *rel_dev = psmouse->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) struct vmmouse_data *priv = psmouse->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) struct input_dev *abs_dev = priv->abs_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) struct input_dev *pref_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) u32 status, x, y, z;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) u32 dummy1, dummy2, dummy3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) unsigned int queue_length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) unsigned int count = 255;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) while (count--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) /* See if we have motion data. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) VMMOUSE_CMD(ABSPOINTER_STATUS, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) status, dummy1, dummy2, dummy3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) if ((status & VMMOUSE_ERROR) == VMMOUSE_ERROR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) psmouse_err(psmouse, "failed to fetch status data\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) * After a few attempts this will result in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) * reconnect.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) return PSMOUSE_BAD_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) queue_length = status & 0xffff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) if (queue_length == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) if (queue_length % 4) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) psmouse_err(psmouse, "invalid queue length\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) return PSMOUSE_BAD_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) /* Now get it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) VMMOUSE_CMD(ABSPOINTER_DATA, 4, status, x, y, z);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) * And report what we've got. Prefer to report button
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) * events on the same device where we report motion events.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) * This doesn't work well with the mouse wheel, though. See
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) * below. Ideally we would want to report that on the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) * preferred device as well.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) if (status & VMMOUSE_RELATIVE_PACKET) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) pref_dev = rel_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) input_report_rel(rel_dev, REL_X, (s32)x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) input_report_rel(rel_dev, REL_Y, -(s32)y);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) pref_dev = abs_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) input_report_abs(abs_dev, ABS_X, x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) input_report_abs(abs_dev, ABS_Y, y);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) /* Xorg seems to ignore wheel events on absolute devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) input_report_rel(rel_dev, REL_WHEEL, -(s8)((u8) z));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) vmmouse_report_button(psmouse, abs_dev, rel_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) pref_dev, BTN_LEFT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) status & VMMOUSE_LEFT_BUTTON);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) vmmouse_report_button(psmouse, abs_dev, rel_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) pref_dev, BTN_RIGHT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) status & VMMOUSE_RIGHT_BUTTON);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) vmmouse_report_button(psmouse, abs_dev, rel_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) pref_dev, BTN_MIDDLE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) status & VMMOUSE_MIDDLE_BUTTON);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) input_sync(abs_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) input_sync(rel_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) return PSMOUSE_FULL_PACKET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) * vmmouse_process_byte - process data on the ps/2 channel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) * @psmouse: Pointer to the psmouse struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) * When the ps/2 channel indicates that there is vmmouse data available,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) * call vmmouse channel processing. Otherwise, continue to accept bytes. If
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) * there is a synchronization or communication data error, return
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) * PSMOUSE_BAD_DATA in the hope that the caller will reset the mouse.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) static psmouse_ret_t vmmouse_process_byte(struct psmouse *psmouse)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) unsigned char *packet = psmouse->packet;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) switch (psmouse->pktcnt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) return (packet[0] & 0x8) == 0x8 ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) case 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) return PSMOUSE_GOOD_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) return vmmouse_report_events(psmouse);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) * vmmouse_disable - Disable vmmouse
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) * @psmouse: Pointer to the psmouse struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) * Tries to disable vmmouse mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) static void vmmouse_disable(struct psmouse *psmouse)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) u32 status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) u32 dummy1, dummy2, dummy3, dummy4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) VMMOUSE_CMD(ABSPOINTER_COMMAND, VMMOUSE_CMD_DISABLE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) dummy1, dummy2, dummy3, dummy4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) VMMOUSE_CMD(ABSPOINTER_STATUS, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) status, dummy1, dummy2, dummy3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) if ((status & VMMOUSE_ERROR) != VMMOUSE_ERROR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) psmouse_warn(psmouse, "failed to disable vmmouse device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) * vmmouse_enable - Enable vmmouse and request absolute mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) * @psmouse: Pointer to the psmouse struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) * Tries to enable vmmouse mode. Performs basic checks and requests
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) * absolute vmmouse mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) * Returns 0 on success, -ENODEV on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) static int vmmouse_enable(struct psmouse *psmouse)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) u32 status, version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) u32 dummy1, dummy2, dummy3, dummy4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) * Try enabling the device. If successful, we should be able to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) * read valid version ID back from it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) VMMOUSE_CMD(ABSPOINTER_COMMAND, VMMOUSE_CMD_ENABLE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) dummy1, dummy2, dummy3, dummy4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) * See if version ID can be retrieved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) VMMOUSE_CMD(ABSPOINTER_STATUS, 0, status, dummy1, dummy2, dummy3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) if ((status & 0x0000ffff) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) psmouse_dbg(psmouse, "empty flags - assuming no device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) VMMOUSE_CMD(ABSPOINTER_DATA, 1 /* single item */,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) version, dummy1, dummy2, dummy3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) if (version != VMMOUSE_VERSION_ID) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) psmouse_dbg(psmouse, "Unexpected version value: %u vs %u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) (unsigned) version, VMMOUSE_VERSION_ID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) vmmouse_disable(psmouse);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) * Restrict ioport access, if possible.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) VMMOUSE_CMD(ABSPOINTER_RESTRICT, VMMOUSE_RESTRICT_CPL0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) dummy1, dummy2, dummy3, dummy4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) VMMOUSE_CMD(ABSPOINTER_COMMAND, VMMOUSE_CMD_REQUEST_ABSOLUTE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) dummy1, dummy2, dummy3, dummy4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) * Array of supported hypervisors.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) static enum x86_hypervisor_type vmmouse_supported_hypervisors[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) X86_HYPER_VMWARE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) X86_HYPER_KVM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) * vmmouse_check_hypervisor - Check if we're running on a supported hypervisor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) static bool vmmouse_check_hypervisor(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) for (i = 0; i < ARRAY_SIZE(vmmouse_supported_hypervisors); i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) if (vmmouse_supported_hypervisors[i] == x86_hyper_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) * vmmouse_detect - Probe whether vmmouse is available
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) * @psmouse: Pointer to the psmouse struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) * @set_properties: Whether to set psmouse name and vendor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) * Returns 0 if vmmouse channel is available. Negative error code if not.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) int vmmouse_detect(struct psmouse *psmouse, bool set_properties)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) u32 response, version, dummy1, dummy2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) if (!vmmouse_check_hypervisor()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) psmouse_dbg(psmouse,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) "VMMouse not running on supported hypervisor.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) /* Check if the device is present */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) response = ~VMMOUSE_PROTO_MAGIC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) VMMOUSE_CMD(GETVERSION, 0, version, response, dummy1, dummy2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) if (response != VMMOUSE_PROTO_MAGIC || version == 0xffffffffU)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) if (set_properties) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) psmouse->vendor = VMMOUSE_VENDOR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) psmouse->name = VMMOUSE_NAME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) psmouse->model = version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) * vmmouse_disconnect - Take down vmmouse driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) * @psmouse: Pointer to the psmouse struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) * Takes down vmmouse driver and frees resources set up in vmmouse_init().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) static void vmmouse_disconnect(struct psmouse *psmouse)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) struct vmmouse_data *priv = psmouse->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) vmmouse_disable(psmouse);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) psmouse_reset(psmouse);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) input_unregister_device(priv->abs_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) kfree(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) * vmmouse_reconnect - Reset the ps/2 - and vmmouse connections
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) * @psmouse: Pointer to the psmouse struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) * Attempts to reset the mouse connections. Returns 0 on success and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) * -1 on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) static int vmmouse_reconnect(struct psmouse *psmouse)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) psmouse_reset(psmouse);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) vmmouse_disable(psmouse);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) error = vmmouse_enable(psmouse);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) psmouse_err(psmouse,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) "Unable to re-enable mouse when reconnecting, err: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) * vmmouse_init - Initialize the vmmouse driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) * @psmouse: Pointer to the psmouse struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) * Requests the device and tries to enable vmmouse mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) * If successful, sets up the input device for relative movement events.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) * It also allocates another input device and sets it up for absolute motion
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) * events. Returns 0 on success and -1 on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) int vmmouse_init(struct psmouse *psmouse)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) struct vmmouse_data *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) struct input_dev *rel_dev = psmouse->dev, *abs_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) psmouse_reset(psmouse);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) error = vmmouse_enable(psmouse);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) priv = kzalloc(sizeof(*priv), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) abs_dev = input_allocate_device();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) if (!priv || !abs_dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) error = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) goto init_fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) priv->abs_dev = abs_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) psmouse->private = priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) /* Set up and register absolute device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) snprintf(priv->phys, sizeof(priv->phys), "%s/input1",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) psmouse->ps2dev.serio->phys);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) /* Mimic name setup for relative device in psmouse-base.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) snprintf(priv->dev_name, sizeof(priv->dev_name), "%s %s %s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) VMMOUSE_PSNAME, VMMOUSE_VENDOR, VMMOUSE_NAME);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) abs_dev->phys = priv->phys;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) abs_dev->name = priv->dev_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) abs_dev->id.bustype = BUS_I8042;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) abs_dev->id.vendor = 0x0002;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) abs_dev->id.product = PSMOUSE_VMMOUSE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) abs_dev->id.version = psmouse->model;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) abs_dev->dev.parent = &psmouse->ps2dev.serio->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) /* Set absolute device capabilities */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) input_set_capability(abs_dev, EV_KEY, BTN_LEFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) input_set_capability(abs_dev, EV_KEY, BTN_RIGHT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) input_set_capability(abs_dev, EV_KEY, BTN_MIDDLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) input_set_capability(abs_dev, EV_ABS, ABS_X);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) input_set_capability(abs_dev, EV_ABS, ABS_Y);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) input_set_abs_params(abs_dev, ABS_X, 0, VMMOUSE_MAX_X, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) input_set_abs_params(abs_dev, ABS_Y, 0, VMMOUSE_MAX_Y, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) error = input_register_device(priv->abs_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) goto init_fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) /* Add wheel capability to the relative device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) input_set_capability(rel_dev, EV_REL, REL_WHEEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) psmouse->protocol_handler = vmmouse_process_byte;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) psmouse->disconnect = vmmouse_disconnect;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) psmouse->reconnect = vmmouse_reconnect;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) init_fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) vmmouse_disable(psmouse);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) psmouse_reset(psmouse);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) input_free_device(abs_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) kfree(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) psmouse->private = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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