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/drivers/misc/ibmasm/remote.c

https://bitbucket.org/slukk/jb-tsm-kernel-4.2
C | 282 lines | 227 code | 30 blank | 25 comment | 18 complexity | 4dd2f34cf68f6d0bd9939863e9eae063 MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
  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