kernel/drivers/misc/ibmasm/remote.c

   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
  34 static 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
  84 static 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
 136 static 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
 158 static 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
 170 static 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
 184 void 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
 210 int 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
 276 void 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