linux/drivers/misc/ibmasm/remote.c
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   1/*
   2 * IBM ASM Service Processor Device Driver
   3 *
   4 * This program is free software; you can redistribute it and/or modify
   5 * it under the terms of the GNU General Public License as published by
   6 * the Free Software Foundation; either version 2 of the License, or
   7 * (at your option) any later version.
   8 *
   9 * This program is distributed in the hope that it will be useful,
  10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 * GNU General Public License for more details.
  13 *
  14 * You should have received a copy of the GNU General Public License
  15 * along with this program; if not, write to the Free Software
  16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17 *
  18 * Copyright (C) IBM Corporation, 2004
  19 *
  20 * Authors: Max Asböck <amax@us.ibm.com>
  21 *          Vernon Mauery <vernux@us.ibm.com>
  22 *
  23 */
  24
  25/* Remote mouse and keyboard event handling functions */
  26
  27#include <linux/pci.h>
  28#include "ibmasm.h"
  29#include "remote.h"
  30
  31#define MOUSE_X_MAX     1600
  32#define MOUSE_Y_MAX     1200
  33
  34static const unsigned short xlate_high[XLATE_SIZE] = {
  35        [KEY_SYM_ENTER & 0xff] = KEY_ENTER,
  36        [KEY_SYM_KPSLASH & 0xff] = KEY_KPSLASH,
  37        [KEY_SYM_KPSTAR & 0xff] = KEY_KPASTERISK,
  38        [KEY_SYM_KPMINUS & 0xff] = KEY_KPMINUS,
  39        [KEY_SYM_KPDOT & 0xff] = KEY_KPDOT,
  40        [KEY_SYM_KPPLUS & 0xff] = KEY_KPPLUS,
  41        [KEY_SYM_KP0 & 0xff] = KEY_KP0,
  42        [KEY_SYM_KP1 & 0xff] = KEY_KP1,
  43        [KEY_SYM_KP2 & 0xff] = KEY_KP2, [KEY_SYM_KPDOWN & 0xff] = KEY_KP2,
  44        [KEY_SYM_KP3 & 0xff] = KEY_KP3,
  45        [KEY_SYM_KP4 & 0xff] = KEY_KP4, [KEY_SYM_KPLEFT & 0xff] = KEY_KP4,
  46        [KEY_SYM_KP5 & 0xff] = KEY_KP5,
  47        [KEY_SYM_KP6 & 0xff] = KEY_KP6, [KEY_SYM_KPRIGHT & 0xff] = KEY_KP6,
  48        [KEY_SYM_KP7 & 0xff] = KEY_KP7,
  49        [KEY_SYM_KP8 & 0xff] = KEY_KP8, [KEY_SYM_KPUP & 0xff] = KEY_KP8,
  50        [KEY_SYM_KP9 & 0xff] = KEY_KP9,
  51        [KEY_SYM_BK_SPC & 0xff] = KEY_BACKSPACE,
  52        [KEY_SYM_TAB & 0xff] = KEY_TAB,
  53        [KEY_SYM_CTRL & 0xff] = KEY_LEFTCTRL,
  54        [KEY_SYM_ALT & 0xff] = KEY_LEFTALT,
  55        [KEY_SYM_INSERT & 0xff] = KEY_INSERT,
  56        [KEY_SYM_DELETE & 0xff] = KEY_DELETE,
  57        [KEY_SYM_SHIFT & 0xff] = KEY_LEFTSHIFT,
  58        [KEY_SYM_UARROW & 0xff] = KEY_UP,
  59        [KEY_SYM_DARROW & 0xff] = KEY_DOWN,
  60        [KEY_SYM_LARROW & 0xff] = KEY_LEFT,
  61        [KEY_SYM_RARROW & 0xff] = KEY_RIGHT,
  62        [KEY_SYM_ESCAPE & 0xff] = KEY_ESC,
  63        [KEY_SYM_PAGEUP & 0xff] = KEY_PAGEUP,
  64        [KEY_SYM_PAGEDOWN & 0xff] = KEY_PAGEDOWN,
  65        [KEY_SYM_HOME & 0xff] = KEY_HOME,
  66        [KEY_SYM_END & 0xff] = KEY_END,
  67        [KEY_SYM_F1 & 0xff] = KEY_F1,
  68        [KEY_SYM_F2 & 0xff] = KEY_F2,
  69        [KEY_SYM_F3 & 0xff] = KEY_F3,
  70        [KEY_SYM_F4 & 0xff] = KEY_F4,
  71        [KEY_SYM_F5 & 0xff] = KEY_F5,
  72        [KEY_SYM_F6 & 0xff] = KEY_F6,
  73        [KEY_SYM_F7 & 0xff] = KEY_F7,
  74        [KEY_SYM_F8 & 0xff] = KEY_F8,
  75        [KEY_SYM_F9 & 0xff] = KEY_F9,
  76        [KEY_SYM_F10 & 0xff] = KEY_F10,
  77        [KEY_SYM_F11 & 0xff] = KEY_F11,
  78        [KEY_SYM_F12 & 0xff] = KEY_F12,
  79        [KEY_SYM_CAP_LOCK & 0xff] = KEY_CAPSLOCK,
  80        [KEY_SYM_NUM_LOCK & 0xff] = KEY_NUMLOCK,
  81        [KEY_SYM_SCR_LOCK & 0xff] = KEY_SCROLLLOCK,
  82};
  83
  84static const unsigned short xlate[XLATE_SIZE] = {
  85        [NO_KEYCODE] = KEY_RESERVED,
  86        [KEY_SYM_SPACE] = KEY_SPACE,
  87        [KEY_SYM_TILDE] = KEY_GRAVE,        [KEY_SYM_BKTIC] = KEY_GRAVE,
  88        [KEY_SYM_ONE] = KEY_1,              [KEY_SYM_BANG] = KEY_1,
  89        [KEY_SYM_TWO] = KEY_2,              [KEY_SYM_AT] = KEY_2,
  90        [KEY_SYM_THREE] = KEY_3,            [KEY_SYM_POUND] = KEY_3,
  91        [KEY_SYM_FOUR] = KEY_4,             [KEY_SYM_DOLLAR] = KEY_4,
  92        [KEY_SYM_FIVE] = KEY_5,             [KEY_SYM_PERCENT] = KEY_5,
  93        [KEY_SYM_SIX] = KEY_6,              [KEY_SYM_CARAT] = KEY_6,
  94        [KEY_SYM_SEVEN] = KEY_7,            [KEY_SYM_AMPER] = KEY_7,
  95        [KEY_SYM_EIGHT] = KEY_8,            [KEY_SYM_STAR] = KEY_8,
  96        [KEY_SYM_NINE] = KEY_9,             [KEY_SYM_LPAREN] = KEY_9,
  97        [KEY_SYM_ZERO] = KEY_0,             [KEY_SYM_RPAREN] = KEY_0,
  98        [KEY_SYM_MINUS] = KEY_MINUS,        [KEY_SYM_USCORE] = KEY_MINUS,
  99        [KEY_SYM_EQUAL] = KEY_EQUAL,        [KEY_SYM_PLUS] = KEY_EQUAL,
 100        [KEY_SYM_LBRKT] = KEY_LEFTBRACE,    [KEY_SYM_LCURLY] = KEY_LEFTBRACE,
 101        [KEY_SYM_RBRKT] = KEY_RIGHTBRACE,   [KEY_SYM_RCURLY] = KEY_RIGHTBRACE,
 102        [KEY_SYM_SLASH] = KEY_BACKSLASH,    [KEY_SYM_PIPE] = KEY_BACKSLASH,
 103        [KEY_SYM_TIC] = KEY_APOSTROPHE,     [KEY_SYM_QUOTE] = KEY_APOSTROPHE,
 104        [KEY_SYM_SEMIC] = KEY_SEMICOLON,    [KEY_SYM_COLON] = KEY_SEMICOLON,
 105        [KEY_SYM_COMMA] = KEY_COMMA,        [KEY_SYM_LT] = KEY_COMMA,
 106        [KEY_SYM_PERIOD] = KEY_DOT,         [KEY_SYM_GT] = KEY_DOT,
 107        [KEY_SYM_BSLASH] = KEY_SLASH,       [KEY_SYM_QMARK] = KEY_SLASH,
 108        [KEY_SYM_A] = KEY_A,                [KEY_SYM_a] = KEY_A,
 109        [KEY_SYM_B] = KEY_B,                [KEY_SYM_b] = KEY_B,
 110        [KEY_SYM_C] = KEY_C,                [KEY_SYM_c] = KEY_C,
 111        [KEY_SYM_D] = KEY_D,                [KEY_SYM_d] = KEY_D,
 112        [KEY_SYM_E] = KEY_E,                [KEY_SYM_e] = KEY_E,
 113        [KEY_SYM_F] = KEY_F,                [KEY_SYM_f] = KEY_F,
 114        [KEY_SYM_G] = KEY_G,                [KEY_SYM_g] = KEY_G,
 115        [KEY_SYM_H] = KEY_H,                [KEY_SYM_h] = KEY_H,
 116        [KEY_SYM_I] = KEY_I,                [KEY_SYM_i] = KEY_I,
 117        [KEY_SYM_J] = KEY_J,                [KEY_SYM_j] = KEY_J,
 118        [KEY_SYM_K] = KEY_K,                [KEY_SYM_k] = KEY_K,
 119        [KEY_SYM_L] = KEY_L,                [KEY_SYM_l] = KEY_L,
 120        [KEY_SYM_M] = KEY_M,                [KEY_SYM_m] = KEY_M,
 121        [KEY_SYM_N] = KEY_N,                [KEY_SYM_n] = KEY_N,
 122        [KEY_SYM_O] = KEY_O,                [KEY_SYM_o] = KEY_O,
 123        [KEY_SYM_P] = KEY_P,                [KEY_SYM_p] = KEY_P,
 124        [KEY_SYM_Q] = KEY_Q,                [KEY_SYM_q] = KEY_Q,
 125        [KEY_SYM_R] = KEY_R,                [KEY_SYM_r] = KEY_R,
 126        [KEY_SYM_S] = KEY_S,                [KEY_SYM_s] = KEY_S,
 127        [KEY_SYM_T] = KEY_T,                [KEY_SYM_t] = KEY_T,
 128        [KEY_SYM_U] = KEY_U,                [KEY_SYM_u] = KEY_U,
 129        [KEY_SYM_V] = KEY_V,                [KEY_SYM_v] = KEY_V,
 130        [KEY_SYM_W] = KEY_W,                [KEY_SYM_w] = KEY_W,
 131        [KEY_SYM_X] = KEY_X,                [KEY_SYM_x] = KEY_X,
 132        [KEY_SYM_Y] = KEY_Y,                [KEY_SYM_y] = KEY_Y,
 133        [KEY_SYM_Z] = KEY_Z,                [KEY_SYM_z] = KEY_Z,
 134};
 135
 136static void print_input(struct remote_input *input)
 137{
 138        if (input->type == INPUT_TYPE_MOUSE) {
 139                unsigned char buttons = input->mouse_buttons;
 140                dbg("remote mouse movement: (x,y)=(%d,%d)%s%s%s%s\n",
 141                        input->data.mouse.x, input->data.mouse.y,
 142                        (buttons) ? " -- buttons:" : "",
 143                        (buttons & REMOTE_BUTTON_LEFT) ? "left " : "",
 144                        (buttons & REMOTE_BUTTON_MIDDLE) ? "middle " : "",
 145                        (buttons & REMOTE_BUTTON_RIGHT) ? "right" : ""
 146                      );
 147        } else {
 148                dbg("remote keypress (code, flag, down):"
 149                           "%d (0x%x) [0x%x] [0x%x]\n",
 150                                input->data.keyboard.key_code,
 151                                input->data.keyboard.key_code,
 152                                input->data.keyboard.key_flag,
 153                                input->data.keyboard.key_down
 154                      );
 155        }
 156}
 157
 158static void send_mouse_event(struct input_dev *dev, struct remote_input *input)
 159{
 160        unsigned char buttons = input->mouse_buttons;
 161
 162        input_report_abs(dev, ABS_X, input->data.mouse.x);
 163        input_report_abs(dev, ABS_Y, input->data.mouse.y);
 164        input_report_key(dev, BTN_LEFT, buttons & REMOTE_BUTTON_LEFT);
 165        input_report_key(dev, BTN_MIDDLE, buttons & REMOTE_BUTTON_MIDDLE);
 166        input_report_key(dev, BTN_RIGHT, buttons & REMOTE_BUTTON_RIGHT);
 167        input_sync(dev);
 168}
 169
 170static void send_keyboard_event(struct input_dev *dev,
 171                struct remote_input *input)
 172{
 173        unsigned int key;
 174        unsigned short code = input->data.keyboard.key_code;
 175
 176        if (code & 0xff00)
 177                key = xlate_high[code & 0xff];
 178        else
 179                key = xlate[code];
 180        input_report_key(dev, key, input->data.keyboard.key_down);
 181        input_sync(dev);
 182}
 183
 184void ibmasm_handle_mouse_interrupt(struct service_processor *sp)
 185{
 186        unsigned long reader;
 187        unsigned long writer;
 188        struct remote_input input;
 189
 190        reader = get_queue_reader(sp);
 191        writer = get_queue_writer(sp);
 192
 193        while (reader != writer) {
 194                memcpy_fromio(&input, get_queue_entry(sp, reader),
 195                                sizeof(struct remote_input));
 196
 197                print_input(&input);
 198                if (input.type == INPUT_TYPE_MOUSE) {
 199                        send_mouse_event(sp->remote.mouse_dev, &input);
 200                } else if (input.type == INPUT_TYPE_KEYBOARD) {
 201                        send_keyboard_event(sp->remote.keybd_dev, &input);
 202                } else
 203                        break;
 204
 205                reader = advance_queue_reader(sp, reader);
 206                writer = get_queue_writer(sp);
 207        }
 208}
 209
 210int ibmasm_init_remote_input_dev(struct service_processor *sp)
 211{
 212        /* set up the mouse input device */
 213        struct input_dev *mouse_dev, *keybd_dev;
 214        struct pci_dev *pdev = to_pci_dev(sp->dev);
 215        int error = -ENOMEM;
 216        int i;
 217
 218        sp->remote.mouse_dev = mouse_dev = input_allocate_device();
 219        sp->remote.keybd_dev = keybd_dev = input_allocate_device();
 220
 221        if (!mouse_dev || !keybd_dev)
 222                goto err_free_devices;
 223
 224        mouse_dev->id.bustype = BUS_PCI;
 225        mouse_dev->id.vendor = pdev->vendor;
 226        mouse_dev->id.product = pdev->device;
 227        mouse_dev->id.version = 1;
 228        mouse_dev->dev.parent = sp->dev;
 229        mouse_dev->evbit[0]  = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
 230        mouse_dev->keybit[BIT_WORD(BTN_MOUSE)] = BIT_MASK(BTN_LEFT) |
 231                BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE);
 232        set_bit(BTN_TOUCH, mouse_dev->keybit);
 233        mouse_dev->name = "ibmasm RSA I remote mouse";
 234        input_set_abs_params(mouse_dev, ABS_X, 0, MOUSE_X_MAX, 0, 0);
 235        input_set_abs_params(mouse_dev, ABS_Y, 0, MOUSE_Y_MAX, 0, 0);
 236
 237        keybd_dev->id.bustype = BUS_PCI;
 238        keybd_dev->id.vendor = pdev->vendor;
 239        keybd_dev->id.product = pdev->device;
 240        keybd_dev->id.version = 2;
 241        keybd_dev->dev.parent = sp->dev;
 242        keybd_dev->evbit[0]  = BIT_MASK(EV_KEY);
 243        keybd_dev->name = "ibmasm RSA I remote keyboard";
 244
 245        for (i = 0; i < XLATE_SIZE; i++) {
 246                if (xlate_high[i])
 247                        set_bit(xlate_high[i], keybd_dev->keybit);
 248                if (xlate[i])
 249                        set_bit(xlate[i], keybd_dev->keybit);
 250        }
 251
 252        error = input_register_device(mouse_dev);
 253        if (error)
 254                goto err_free_devices;
 255
 256        error = input_register_device(keybd_dev);
 257        if (error)
 258                goto err_unregister_mouse_dev;
 259
 260        enable_mouse_interrupts(sp);
 261
 262        printk(KERN_INFO "ibmasm remote responding to events on RSA card %d\n", sp->number);
 263
 264        return 0;
 265
 266 err_unregister_mouse_dev:
 267        input_unregister_device(mouse_dev);
 268        mouse_dev = NULL; /* so we don't try to free it again below */
 269 err_free_devices:
 270        input_free_device(mouse_dev);
 271        input_free_device(keybd_dev);
 272
 273        return error;
 274}
 275
 276void ibmasm_free_remote_input_dev(struct service_processor *sp)
 277{
 278        disable_mouse_interrupts(sp);
 279        input_unregister_device(sp->remote.mouse_dev);
 280        input_unregister_device(sp->remote.keybd_dev);
 281}
 282
 283