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Commit c7fd018d authored by Dmitry Torokhov's avatar Dmitry Torokhov
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Input: gamecon - fix crash when accessing device 

Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
parent 07cf779c
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Showing with 194 additions and 149 deletions
drivers/input/joystick/gamecon.c
View file @ c7fd018d
......@@ -159,6 +159,48 @@ static void gc_n64_read_packet(struct gc *gc, unsigned char *data)
}
static void gc_n64_process_packet(struct gc *gc)
{
unsigned char data[GC_N64_LENGTH];
signed char axes[2];
struct input_dev *dev;
int i, j, s;
gc_n64_read_packet(gc, data);
for (i = 0; i < GC_MAX_DEVICES; i++) {
dev = gc->dev[i];
if (!dev)
continue;
s = gc_status_bit[i];
if (s & gc->pads[GC_N64] & ~(data[8] | data[9])) {
axes[0] = axes[1] = 0;
for (j = 0; j < 8; j++) {
if (data[23 - j] & s)
axes[0] |= 1 << j;
if (data[31 - j] & s)
axes[1] |= 1 << j;
}
input_report_abs(dev, ABS_X, axes[0]);
input_report_abs(dev, ABS_Y, -axes[1]);
input_report_abs(dev, ABS_HAT0X, !(s & data[6]) - !(s & data[7]));
input_report_abs(dev, ABS_HAT0Y, !(s & data[4]) - !(s & data[5]));
for (j = 0; j < 10; j++)
input_report_key(dev, gc_n64_btn[j], s & data[gc_n64_bytes[j]]);
input_sync(dev);
}
}
}
/*
* NES/SNES support.
*/
......@@ -198,6 +240,39 @@ static void gc_nes_read_packet(struct gc *gc, int length, unsigned char *data)
}
}
static void gc_nes_process_packet(struct gc *gc)
{
unsigned char data[GC_SNES_LENGTH];
struct input_dev *dev;
int i, j, s;
gc_nes_read_packet(gc, gc->pads[GC_SNES] ? GC_SNES_LENGTH : GC_NES_LENGTH, data);
for (i = 0; i < GC_MAX_DEVICES; i++) {
dev = gc->dev[i];
if (!dev)
continue;
s = gc_status_bit[i];
if (s & (gc->pads[GC_NES] | gc->pads[GC_SNES])) {
input_report_abs(dev, ABS_X, !(s & data[6]) - !(s & data[7]));
input_report_abs(dev, ABS_Y, !(s & data[4]) - !(s & data[5]));
}
if (s & gc->pads[GC_NES])
for (j = 0; j < 4; j++)
input_report_key(dev, gc_snes_btn[j], s & data[gc_nes_bytes[j]]);
if (s & gc->pads[GC_SNES])
for (j = 0; j < 8; j++)
input_report_key(dev, gc_snes_btn[j], s & data[gc_snes_bytes[j]]);
input_sync(dev);
}
}
/*
* Multisystem joystick support
*/
......@@ -219,6 +294,35 @@ static void gc_multi_read_packet(struct gc *gc, int length, unsigned char *data)
}
}
static void gc_multi_process_packet(struct gc *gc)
{
unsigned char data[GC_MULTI2_LENGTH];
struct input_dev *dev;
int i, s;
gc_multi_read_packet(gc, gc->pads[GC_MULTI2] ? GC_MULTI2_LENGTH : GC_MULTI_LENGTH, data);
for (i = 0; i < GC_MAX_DEVICES; i++) {
dev = gc->dev[i];
if (!dev)
continue;
s = gc_status_bit[i];
if (s & (gc->pads[GC_MULTI] | gc->pads[GC_MULTI2])) {
input_report_abs(dev, ABS_X, !(s & data[2]) - !(s & data[3]));
input_report_abs(dev, ABS_Y, !(s & data[0]) - !(s & data[1]));
input_report_key(dev, BTN_TRIGGER, s & data[4]);
}
if (s & gc->pads[GC_MULTI2])
input_report_key(dev, BTN_THUMB, s & data[5]);
input_sync(dev);
}
}
/*
* PSX support
*
......@@ -263,10 +367,11 @@ static short gc_psx_ddr_btn[] = { BTN_0, BTN_1, BTN_2, BTN_3 };
* the psx pad.
*/
static void gc_psx_command(struct gc *gc, int b, unsigned char data[5])
static void gc_psx_command(struct gc *gc, int b, unsigned char data[GC_MAX_DEVICES])
{
int i, j, cmd, read;
for (i = 0; i < 5; i++)
for (i = 0; i < GC_MAX_DEVICES; i++)
data[i] = 0;
for (i = 0; i < GC_PSX_LENGTH; i++, b >>= 1) {
......@@ -274,7 +379,7 @@ static void gc_psx_command(struct gc *gc, int b, unsigned char data[5])
parport_write_data(gc->pd->port, cmd | GC_PSX_POWER);
udelay(gc_psx_delay);
read = parport_read_status(gc->pd->port) ^ 0x80;
for (j = 0; j < 5; j++)
for (j = 0; j < GC_MAX_DEVICES; j++)
data[j] |= (read & gc_status_bit[j] & (gc->pads[GC_PSX] | gc->pads[GC_DDR])) ? (1 << i) : 0;
parport_write_data(gc->pd->port, cmd | GC_PSX_CLOCK | GC_PSX_POWER);
udelay(gc_psx_delay);
......@@ -286,11 +391,12 @@ static void gc_psx_command(struct gc *gc, int b, unsigned char data[5])
* device identifier code.
*/
static void gc_psx_read_packet(struct gc *gc, unsigned char data[5][GC_PSX_BYTES], unsigned char id[5])
static void gc_psx_read_packet(struct gc *gc, unsigned char data[GC_MAX_DEVICES][GC_PSX_BYTES],
unsigned char id[GC_MAX_DEVICES])
{
int i, j, max_len = 0;
unsigned long flags;
unsigned char data2[5];
unsigned char data2[GC_MAX_DEVICES];
parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_SELECT | GC_PSX_POWER); /* Select pad */
udelay(gc_psx_delay);
......@@ -303,7 +409,7 @@ static void gc_psx_read_packet(struct gc *gc, unsigned char data[5][GC_PSX_BYTES
gc_psx_command(gc, 0x42, id); /* Get device ids */
gc_psx_command(gc, 0, data2); /* Dump status */
for (i =0; i < 5; i++) /* Find the longest pad */
for (i =0; i < GC_MAX_DEVICES; i++) /* Find the longest pad */
if((gc_status_bit[i] & (gc->pads[GC_PSX] | gc->pads[GC_DDR]))
&& (GC_PSX_LEN(id[i]) > max_len)
&& (GC_PSX_LEN(id[i]) <= GC_PSX_BYTES))
......@@ -311,7 +417,7 @@ static void gc_psx_read_packet(struct gc *gc, unsigned char data[5][GC_PSX_BYTES
for (i = 0; i < max_len; i++) { /* Read in all the data */
gc_psx_command(gc, 0, data2);
for (j = 0; j < 5; j++)
for (j = 0; j < GC_MAX_DEVICES; j++)
data[j][i] = data2[j];
}
......@@ -319,185 +425,124 @@ static void gc_psx_read_packet(struct gc *gc, unsigned char data[5][GC_PSX_BYTES
parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_SELECT | GC_PSX_POWER);
for(i = 0; i < 5; i++) /* Set id's to the real value */
for(i = 0; i < GC_MAX_DEVICES; i++) /* Set id's to the real value */
id[i] = GC_PSX_ID(id[i]);
}
/*
* gc_timer() reads and analyzes console pads data.
*/
static void gc_psx_process_packet(struct gc *gc)
{
unsigned char data[GC_MAX_DEVICES][GC_PSX_BYTES];
unsigned char id[GC_MAX_DEVICES];
struct input_dev *dev;
int i, j;
#define GC_MAX_LENGTH GC_N64_LENGTH
gc_psx_read_packet(gc, data, id);
static void gc_timer(unsigned long private)
{
struct gc *gc = (void *) private;
unsigned char data[GC_MAX_LENGTH];
unsigned char data_psx[5][GC_PSX_BYTES];
int i, j, s;
for (i = 0; i < GC_MAX_DEVICES; i++) {
/*
* N64 pads - must be read first, any read confuses them for 200 us
*/
dev = gc->dev[i];
if (!dev)
continue;
if (gc->pads[GC_N64]) {
switch (id[i]) {
gc_n64_read_packet(gc, data);
case GC_PSX_RUMBLE:
for (i = 0; i < 5; i++) {
input_report_key(dev, BTN_THUMBL, ~data[i][0] & 0x04);
input_report_key(dev, BTN_THUMBR, ~data[i][0] & 0x02);
s = gc_status_bit[i];
case GC_PSX_NEGCON:
case GC_PSX_ANALOG:
if (s & gc->pads[GC_N64] & ~(data[8] | data[9])) {
if (gc->pads[GC_DDR] & gc_status_bit[i]) {
for(j = 0; j < 4; j++)
input_report_key(dev, gc_psx_ddr_btn[j], ~data[i][0] & (0x10 << j));
} else {
for (j = 0; j < 4; j++)
input_report_abs(dev, gc_psx_abs[j + 2], data[i][j + 2]);
signed char axes[2];
axes[0] = axes[1] = 0;
input_report_abs(dev, ABS_X, 128 + !(data[i][0] & 0x20) * 127 - !(data[i][0] & 0x80) * 128);
input_report_abs(dev, ABS_Y, 128 + !(data[i][0] & 0x40) * 127 - !(data[i][0] & 0x10) * 128);
}
for (j = 0; j < 8; j++) {
if (data[23 - j] & s) axes[0] |= 1 << j;
if (data[31 - j] & s) axes[1] |= 1 << j;
for (j = 0; j < 8; j++)
input_report_key(dev, gc_psx_btn[j], ~data[i][1] & (1 << j));
input_report_key(dev, BTN_START, ~data[i][0] & 0x08);
input_report_key(dev, BTN_SELECT, ~data[i][0] & 0x01);
input_sync(dev);
break;
case GC_PSX_NORMAL:
if (gc->pads[GC_DDR] & gc_status_bit[i]) {
for(j = 0; j < 4; j++)
input_report_key(dev, gc_psx_ddr_btn[j], ~data[i][0] & (0x10 << j));
} else {
input_report_abs(dev, ABS_X, 128 + !(data[i][0] & 0x20) * 127 - !(data[i][0] & 0x80) * 128);
input_report_abs(dev, ABS_Y, 128 + !(data[i][0] & 0x40) * 127 - !(data[i][0] & 0x10) * 128);
/* for some reason if the extra axes are left unset they drift */
/* for (j = 0; j < 4; j++)
input_report_abs(dev, gc_psx_abs[j + 2], 128);
* This needs to be debugged properly,
* maybe fuzz processing needs to be done in input_sync()
* --vojtech
*/
}
input_report_abs(gc->dev[i], ABS_X, axes[0]);
input_report_abs(gc->dev[i], ABS_Y, -axes[1]);
for (j = 0; j < 8; j++)
input_report_key(dev, gc_psx_btn[j], ~data[i][1] & (1 << j));
input_report_abs(gc->dev[i], ABS_HAT0X, !(s & data[6]) - !(s & data[7]));
input_report_abs(gc->dev[i], ABS_HAT0Y, !(s & data[4]) - !(s & data[5]));
input_report_key(dev, BTN_START, ~data[i][0] & 0x08);
input_report_key(dev, BTN_SELECT, ~data[i][0] & 0x01);
for (j = 0; j < 10; j++)
input_report_key(gc->dev[i], gc_n64_btn[j], s & data[gc_n64_bytes[j]]);
input_sync(dev);
input_sync(gc->dev[i]);
}
break;
case 0: /* not a pad, ignore */
break;
}
}
}
/*
* NES and SNES pads
* gc_timer() initiates reads of console pads data.
*/
if (gc->pads[GC_NES] || gc->pads[GC_SNES]) {
gc_nes_read_packet(gc, gc->pads[GC_SNES] ? GC_SNES_LENGTH : GC_NES_LENGTH, data);
for (i = 0; i < 5; i++) {
s = gc_status_bit[i];
static void gc_timer(unsigned long private)
{
struct gc *gc = (void *) private;
if (s & (gc->pads[GC_NES] | gc->pads[GC_SNES])) {
input_report_abs(gc->dev[i], ABS_X, !(s & data[6]) - !(s & data[7]));
input_report_abs(gc->dev[i], ABS_Y, !(s & data[4]) - !(s & data[5]));
}
/*
* N64 pads - must be read first, any read confuses them for 200 us
*/
if (s & gc->pads[GC_NES])
for (j = 0; j < 4; j++)
input_report_key(gc->dev[i], gc_snes_btn[j], s & data[gc_nes_bytes[j]]);
if (gc->pads[GC_N64])
gc_n64_process_packet(gc);
if (s & gc->pads[GC_SNES])
for (j = 0; j < 8; j++)
input_report_key(gc->dev[i], gc_snes_btn[j], s & data[gc_snes_bytes[j]]);
/*
* NES and SNES pads
*/
input_sync(gc->dev[i]);
}
}
if (gc->pads[GC_NES] || gc->pads[GC_SNES])
gc_nes_process_packet(gc);
/*
* Multi and Multi2 joysticks
*/
if (gc->pads[GC_MULTI] || gc->pads[GC_MULTI2]) {
gc_multi_read_packet(gc, gc->pads[GC_MULTI2] ? GC_MULTI2_LENGTH : GC_MULTI_LENGTH, data);
for (i = 0; i < 5; i++) {
s = gc_status_bit[i];
if (s & (gc->pads[GC_MULTI] | gc->pads[GC_MULTI2])) {
input_report_abs(gc->dev[i], ABS_X, !(s & data[2]) - !(s & data[3]));
input_report_abs(gc->dev[i], ABS_Y, !(s & data[0]) - !(s & data[1]));
input_report_key(gc->dev[i], BTN_TRIGGER, s & data[4]);
}
if (s & gc->pads[GC_MULTI2])
input_report_key(gc->dev[i], BTN_THUMB, s & data[5]);
input_sync(gc->dev[i]);
}
}
if (gc->pads[GC_MULTI] || gc->pads[GC_MULTI2])
gc_multi_process_packet(gc);
/*
* PSX controllers
*/
if (gc->pads[GC_PSX] || gc->pads[GC_DDR]) {
gc_psx_read_packet(gc, data_psx, data);
for (i = 0; i < 5; i++) {
switch (data[i]) {
case GC_PSX_RUMBLE:
input_report_key(gc->dev[i], BTN_THUMBL, ~data_psx[i][0] & 0x04);
input_report_key(gc->dev[i], BTN_THUMBR, ~data_psx[i][0] & 0x02);
case GC_PSX_NEGCON:
case GC_PSX_ANALOG:
if (gc->pads[GC_DDR] & gc_status_bit[i]) {
for(j = 0; j < 4; j++)
input_report_key(gc->dev[i], gc_psx_ddr_btn[j], ~data_psx[i][0] & (0x10 << j));
} else {
for (j = 0; j < 4; j++)
input_report_abs(gc->dev[i], gc_psx_abs[j+2], data_psx[i][j + 2]);
input_report_abs(gc->dev[i], ABS_X, 128 + !(data_psx[i][0] & 0x20) * 127 - !(data_psx[i][0] & 0x80) * 128);
input_report_abs(gc->dev[i], ABS_Y, 128 + !(data_psx[i][0] & 0x40) * 127 - !(data_psx[i][0] & 0x10) * 128);
}
for (j = 0; j < 8; j++)
input_report_key(gc->dev[i], gc_psx_btn[j], ~data_psx[i][1] & (1 << j));
input_report_key(gc->dev[i], BTN_START, ~data_psx[i][0] & 0x08);
input_report_key(gc->dev[i], BTN_SELECT, ~data_psx[i][0] & 0x01);
input_sync(gc->dev[i]);
break;
case GC_PSX_NORMAL:
if (gc->pads[GC_DDR] & gc_status_bit[i]) {
for(j = 0; j < 4; j++)
input_report_key(gc->dev[i], gc_psx_ddr_btn[j], ~data_psx[i][0] & (0x10 << j));
} else {
input_report_abs(gc->dev[i], ABS_X, 128 + !(data_psx[i][0] & 0x20) * 127 - !(data_psx[i][0] & 0x80) * 128);
input_report_abs(gc->dev[i], ABS_Y, 128 + !(data_psx[i][0] & 0x40) * 127 - !(data_psx[i][0] & 0x10) * 128);
/* for some reason if the extra axes are left unset they drift */
/* for (j = 0; j < 4; j++)
input_report_abs(gc->dev[i], gc_psx_abs[j+2], 128);
* This needs to be debugged properly,
* maybe fuzz processing needs to be done in input_sync()
* --vojtech
*/
}
for (j = 0; j < 8; j++)
input_report_key(gc->dev[i], gc_psx_btn[j], ~data_psx[i][1] & (1 << j));
input_report_key(gc->dev[i], BTN_START, ~data_psx[i][0] & 0x08);
input_report_key(gc->dev[i], BTN_SELECT, ~data_psx[i][0] & 0x01);
input_sync(gc->dev[i]);
break;
case 0: /* not a pad, ignore */
break;
}
}
}
if (gc->pads[GC_PSX] || gc->pads[GC_DDR])
gc_psx_process_packet(gc);
mod_timer(&gc->timer, jiffies + GC_REFRESH_TIME);
}
......@@ -654,7 +699,7 @@ static struct gc __init *gc_probe(int parport, int *pads, int n_pads)
gc->timer.data = (long) gc;
gc->timer.function = gc_timer;
for (i = 0; i < n_pads; i++) {
for (i = 0; i < n_pads && i < GC_MAX_DEVICES; i++) {
if (!pads[i])
continue;
......
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