GNU Linux-libre 4.4.284-gnu1
[releases.git] / 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