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 static int xmax = 1600;
  32 static int ymax = 1200;
  33
  34
  35 static unsigned short xlate_high[XLATE_SIZE] = {
  36         [KEY_SYM_ENTER & 0xff] = KEY_ENTER,
  37         [KEY_SYM_KPSLASH & 0xff] = KEY_KPSLASH,
  38         [KEY_SYM_KPSTAR & 0xff] = KEY_KPASTERISK,
  39         [KEY_SYM_KPMINUS & 0xff] = KEY_KPMINUS,
  40         [KEY_SYM_KPDOT & 0xff] = KEY_KPDOT,
  41         [KEY_SYM_KPPLUS & 0xff] = KEY_KPPLUS,
  42         [KEY_SYM_KP0 & 0xff] = KEY_KP0,
  43         [KEY_SYM_KP1 & 0xff] = KEY_KP1,
  44         [KEY_SYM_KP2 & 0xff] = KEY_KP2, [KEY_SYM_KPDOWN & 0xff] = KEY_KP2,
  45         [KEY_SYM_KP3 & 0xff] = KEY_KP3,
  46         [KEY_SYM_KP4 & 0xff] = KEY_KP4, [KEY_SYM_KPLEFT & 0xff] = KEY_KP4,
  47         [KEY_SYM_KP5 & 0xff] = KEY_KP5,
  48         [KEY_SYM_KP6 & 0xff] = KEY_KP6, [KEY_SYM_KPRIGHT & 0xff] = KEY_KP6,
  49         [KEY_SYM_KP7 & 0xff] = KEY_KP7,
  50         [KEY_SYM_KP8 & 0xff] = KEY_KP8, [KEY_SYM_KPUP & 0xff] = KEY_KP8,
  51         [KEY_SYM_KP9 & 0xff] = KEY_KP9,
  52         [KEY_SYM_BK_SPC & 0xff] = KEY_BACKSPACE,
  53         [KEY_SYM_TAB & 0xff] = KEY_TAB,
  54         [KEY_SYM_CTRL & 0xff] = KEY_LEFTCTRL,
  55         [KEY_SYM_ALT & 0xff] = KEY_LEFTALT,
  56         [KEY_SYM_INSERT & 0xff] = KEY_INSERT,
  57         [KEY_SYM_DELETE & 0xff] = KEY_DELETE,
  58         [KEY_SYM_SHIFT & 0xff] = KEY_LEFTSHIFT,
  59         [KEY_SYM_UARROW & 0xff] = KEY_UP,
  60         [KEY_SYM_DARROW & 0xff] = KEY_DOWN,
  61         [KEY_SYM_LARROW & 0xff] = KEY_LEFT,
  62         [KEY_SYM_RARROW & 0xff] = KEY_RIGHT,
  63         [KEY_SYM_ESCAPE & 0xff] = KEY_ESC,
  64         [KEY_SYM_PAGEUP & 0xff] = KEY_PAGEUP,
  65         [KEY_SYM_PAGEDOWN & 0xff] = KEY_PAGEDOWN,
  66         [KEY_SYM_HOME & 0xff] = KEY_HOME,
  67         [KEY_SYM_END & 0xff] = KEY_END,
  68         [KEY_SYM_F1 & 0xff] = KEY_F1,
  69         [KEY_SYM_F2 & 0xff] = KEY_F2,
  70         [KEY_SYM_F3 & 0xff] = KEY_F3,
  71         [KEY_SYM_F4 & 0xff] = KEY_F4,
  72         [KEY_SYM_F5 & 0xff] = KEY_F5,
  73         [KEY_SYM_F6 & 0xff] = KEY_F6,
  74         [KEY_SYM_F7 & 0xff] = KEY_F7,
  75         [KEY_SYM_F8 & 0xff] = KEY_F8,
  76         [KEY_SYM_F9 & 0xff] = KEY_F9,
  77         [KEY_SYM_F10 & 0xff] = KEY_F10,
  78         [KEY_SYM_F11 & 0xff] = KEY_F11,
  79         [KEY_SYM_F12 & 0xff] = KEY_F12,
  80         [KEY_SYM_CAP_LOCK & 0xff] = KEY_CAPSLOCK,
  81         [KEY_SYM_NUM_LOCK & 0xff] = KEY_NUMLOCK,
  82         [KEY_SYM_SCR_LOCK & 0xff] = KEY_SCROLLLOCK,
  83 };
  84 static 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 char remote_mouse_name[] = "ibmasm RSA I remote mouse";
 137 static char remote_keybd_name[] = "ibmasm RSA I remote keyboard";
 138
 139 static void print_input(struct remote_input *input)
 140 {
 141         if (input->type == INPUT_TYPE_MOUSE) {
 142                 unsigned char buttons = input->mouse_buttons;
 143                 dbg("remote mouse movement: (x,y)=(%d,%d)%s%s%s%s\n",
 144                         input->data.mouse.x, input->data.mouse.y,
 145                         (buttons)?" -- buttons:":"",
 146                         (buttons & REMOTE_BUTTON_LEFT)?"left ":"",
 147                         (buttons & REMOTE_BUTTON_MIDDLE)?"middle ":"",
 148                         (buttons & REMOTE_BUTTON_RIGHT)?"right":""
 149                       );
 150         } else {
 151                 dbg("remote keypress (code, flag, down):"
 152                            "%d (0x%x) [0x%x] [0x%x]\n",
 153                                 input->data.keyboard.key_code,
 154                                 input->data.keyboard.key_code,
 155                                 input->data.keyboard.key_flag,
 156                                 input->data.keyboard.key_down
 157                       );
 158         }
 159 }
 160
 161 static void send_mouse_event(struct input_dev *dev, struct pt_regs *regs,
 162                 struct remote_input *input)
 163 {
 164         unsigned char buttons = input->mouse_buttons;
 165
 166         input_regs(dev, regs);
 167         input_report_abs(dev, ABS_X, input->data.mouse.x);
 168         input_report_abs(dev, ABS_Y, input->data.mouse.y);
 169         input_report_key(dev, BTN_LEFT, buttons & REMOTE_BUTTON_LEFT);
 170         input_report_key(dev, BTN_MIDDLE, buttons & REMOTE_BUTTON_MIDDLE);
 171         input_report_key(dev, BTN_RIGHT, buttons & REMOTE_BUTTON_RIGHT);
 172         input_sync(dev);
 173 }
 174
 175 static void send_keyboard_event(struct input_dev *dev, struct pt_regs *regs,
 176                 struct remote_input *input)
 177 {
 178         unsigned int key;
 179         unsigned short code = input->data.keyboard.key_code;
 180
 181         if (code & 0xff00)
 182                 key = xlate_high[code & 0xff];
 183         else
 184                 key = xlate[code];
 185         input_regs(dev, regs);
 186         input_report_key(dev, key, (input->data.keyboard.key_down) ? 1 : 0);
 187         input_sync(dev);
 188 }
 189
 190 void ibmasm_handle_mouse_interrupt(struct service_processor *sp,
 191                 struct pt_regs *regs)
 192 {
 193         unsigned long reader;
 194         unsigned long writer;
 195         struct remote_input input;
 196
 197         reader = get_queue_reader(sp);
 198         writer = get_queue_writer(sp);
 199
 200         while (reader != writer) {
 201                 memcpy_fromio(&input, get_queue_entry(sp, reader),
 202                                 sizeof(struct remote_input));
 203
 204                 print_input(&input);
 205                 if (input.type == INPUT_TYPE_MOUSE) {
 206                         send_mouse_event(sp->remote.mouse_dev, regs, &input);
 207                 } else if (input.type == INPUT_TYPE_KEYBOARD) {
 208                         send_keyboard_event(sp->remote.keybd_dev, regs, &input);
 209                 } else
 210                         break;
 211
 212                 reader = advance_queue_reader(sp, reader);
 213                 writer = get_queue_writer(sp);
 214         }
 215 }
 216
 217 int ibmasm_init_remote_input_dev(struct service_processor *sp)
 218 {
 219         /* set up the mouse input device */
 220         struct input_dev *mouse_dev, *keybd_dev;
 221         struct pci_dev *pdev = to_pci_dev(sp->dev);
 222         int error = -ENOMEM;
 223         int i;
 224
 225         sp->remote.mouse_dev = mouse_dev = input_allocate_device();
 226         sp->remote.keybd_dev = keybd_dev = input_allocate_device();
 227
 228         if (!mouse_dev || !keybd_dev)
 229                 goto err_free_devices;
 230
 231         mouse_dev->id.bustype = BUS_PCI;
 232         mouse_dev->id.vendor = pdev->vendor;
 233         mouse_dev->id.product = pdev->device;
 234         mouse_dev->id.version = 1;
 235         mouse_dev->evbit[0]  = BIT(EV_KEY) | BIT(EV_ABS);
 236         mouse_dev->keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) |
 237                 BIT(BTN_RIGHT) | BIT(BTN_MIDDLE);
 238         set_bit(BTN_TOUCH, mouse_dev->keybit);
 239         mouse_dev->name = remote_mouse_name;
 240         input_set_abs_params(mouse_dev, ABS_X, 0, xmax, 0, 0);
 241         input_set_abs_params(mouse_dev, ABS_Y, 0, ymax, 0, 0);
 242
 243         mouse_dev->id.bustype = BUS_PCI;
 244         keybd_dev->id.vendor = pdev->vendor;
 245         keybd_dev->id.product = pdev->device;
 246         mouse_dev->id.version = 2;
 247         keybd_dev->evbit[0]  = BIT(EV_KEY);
 248         keybd_dev->name = remote_keybd_name;
 249
 250         for (i = 0; i < XLATE_SIZE; i++) {
 251                 if (xlate_high[i])
 252                         set_bit(xlate_high[i], keybd_dev->keybit);
 253                 if (xlate[i])
 254                         set_bit(xlate[i], keybd_dev->keybit);
 255         }
 256
 257         error = input_register_device(mouse_dev);
 258         if (error)
 259                 goto err_free_devices;
 260
 261         error = input_register_device(keybd_dev);
 262         if (error)
 263                 goto err_unregister_mouse_dev;
 264
 265         enable_mouse_interrupts(sp);
 266
 267         printk(KERN_INFO "ibmasm remote responding to events on RSA card %d\n", sp->number);
 268
 269         return 0;
 270
 271  err_unregister_mouse_dev:
 272         input_unregister_device(mouse_dev);
 273         mouse_dev = NULL; /* so we don't try to free it again below */
 274  err_free_devices:
 275         input_free_device(mouse_dev);
 276         input_free_device(keybd_dev);
 277
 278         return error;
 279 }
 280
 281 void ibmasm_free_remote_input_dev(struct service_processor *sp)
 282 {
 283         disable_mouse_interrupts(sp);
 284         input_unregister_device(sp->remote.mouse_dev);
 285         input_unregister_device(sp->remote.keybd_dev);
 286 }
 287