* [Qemu-devel] synaptic touchpad emulation
@ 2004-05-18 15:46 Jim C. Brown
0 siblings, 0 replies; only message in thread
From: Jim C. Brown @ 2004-05-18 15:46 UTC (permalink / raw)
To: qemu-devel
[-- Attachment #1: Type: text/plain, Size: 481 bytes --]
I have a patch for this against 0.5.4. It doesn't appear to break anything.
I haven't tested the actual touchpad emulation yet, and I doubt it will work
due to my poor bitwise manipulation skills. Good luck.
P.S. In case the patch doesn't apply, I've attached my modified file. You can
just plug that in directly. I'll make a patch on 0.5.5 asap, and the CVS
if thats too different.
--
Infinite complexity begets infinite beauty.
Infinite precision begets infinite perfection.
[-- Attachment #2: pckbd.c.diff --]
[-- Type: text/plain, Size: 8445 bytes --]
--- pckbd.c Tue May 18 10:45:09 2004
+++ pckbd.c.new Tue May 18 11:35:46 2004
@@ -91,6 +91,7 @@
#define AUX_SET_SCALE21 0xE7 /* Set 2:1 scaling */
#define AUX_SET_RES 0xE8 /* Set resolution */
#define AUX_GET_SCALE 0xE9 /* Get scaling factor */
+/* according to Synaptic docs this $E9 is really 3-byte status */
#define AUX_SET_STREAM 0xEA /* Set stream mode */
#define AUX_POLL 0xEB /* Poll */
#define AUX_RESET_WRAP 0xEC /* Reset wrap mode */
@@ -115,6 +116,11 @@
int rptr, wptr, count;
} KBDQueue;
+typedef struct {
+ int absolute;
+ int high;
+} TouchPad;
+
typedef struct KBDState {
KBDQueue queues[2];
uint8_t write_cmd; /* if non zero, write data to port 60 is expected */
@@ -135,6 +141,7 @@
int mouse_dy;
int mouse_dz;
uint8_t mouse_buttons;
+ TouchPad touchpad;
} KBDState;
KBDState kbd_state;
@@ -394,6 +401,51 @@
dx1 = s->mouse_dx;
dy1 = s->mouse_dy;
dz1 = s->mouse_dz;
+ if (s->touchpad.absolute)
+ {
+ int dz2, dleftnright, dg, df;
+ if (dx1 > 6143)
+ dx1 = 6143;
+ else if (dx1 < 0)
+ dx1 = 0;
+ if (dy1 > 6143)
+ dy1 = 6143;
+ else if (dy1 < 0)
+ dy1 = 0;
+ dz2 = 80; /* normal finger pressure */
+ dg = 0; /* guesture not supported */
+ df = 0; /* finger not supported */
+ dleftnright = (s->mouse_buttons & 0x07);
+ /*
+ X: 13 bits --return absolute x ord
+ Y: 13 bits --return absolute y ord
+ Z: 8 bits --return constant 80 since we don't know how hard the user
+ is pressing on the mouse button ;) 80 is the default for pen
+ pressure, as touchpads cant sense what pressure a pen makes.
+ W: 4 bits --return 0, we don't support finger width (should we?)
+ left: 1 bit --is left button pressed
+ right: 1 bit --is right button pressed
+ guesture: 1 bit --we dont support, return 0
+ finger: 1 bit --ditto
+ total: 42 bits in 6 bytes
+ note that Synaptics drivers ignore the finger and guesture bits and
+ consider them redundant
+ */
+ /*
+ note: the packet setup is different when Wmode = 1, but
+ this doesn't apply since we don't support Wmode capability
+ format of packet is as follows:
+ */
+ // 1 0 finger reserved 0 gesture right left
+ kbd_queue(s, (0x80 | (df ? 0x20 : 0) | (dg ? 0x04 : 0) | dleftnright), 1);
+ kbd_queue(s, ((dy1 & 0xF) * 256) + (dx1 & 0xF), 1);
+ kbd_queue(s, 80, 1); //byte 3
+ // 1 1 y-12 x-12 0 gesture right left
+ kbd_queue(s, (0xC0 | ((dy1 & 1000) ? 0x20 : 0) | ((dx1 & 1000) ? 0x10 : 0) | (dg ? 0x04 : 0) | dleftnright), 1);
+ kbd_queue(s, dx1 & 0xFF, 1);
+ kbd_queue(s, dy1 & 0xFF, 1);
+ return;
+ }
/* XXX: increase range to 8 bits ? */
if (dx1 > 127)
dx1 = 127;
@@ -465,6 +517,9 @@
static void kbd_write_mouse(KBDState *s, int val)
{
+/* variables needed to store synaptics command info */
+static int rr = 0, ss = 0, tt = 0, uu = 0, res_count = 0, last_com = 0;
+int spare;
#ifdef DEBUG_MOUSE
printf("kbd: write mouse 0x%02x\n", val);
#endif
@@ -483,6 +538,7 @@
return;
}
}
+ last_com = val;
switch(val) {
case AUX_SET_SCALE11:
s->mouse_status &= ~MOUSE_STATUS_SCALE21;
@@ -514,10 +570,126 @@
kbd_queue(s, AUX_ACK, 1);
break;
case AUX_GET_SCALE:
- kbd_queue(s, AUX_ACK, 1);
- kbd_queue(s, s->mouse_status, 1);
- kbd_queue(s, s->mouse_resolution, 1);
- kbd_queue(s, s->mouse_sample_rate, 1);
+ if (res_count == 4)
+ {
+ /* time for the special stuff */
+ kbd_queue(s, AUX_ACK, 1);
+ /* below is how we get the real synaptic command */
+ val = (rr*64) + (ss*16) + (tt*4) + uu;
+ switch(val)
+ {
+ /* id touchpad */
+ case 0x00:
+ /* info Minor */
+ kbd_queue(s, 0x00, 1);
+ /* special verification byte */
+ kbd_queue(s, 0x47, 1);
+ /* info Major * 0x10 + Info ModelCode*/
+ kbd_queue(s, 4 * 0x10 + 0, 1);
+ break;
+ /* read touchpad modes */
+ case 0x01:
+ /* special verification byte */
+ kbd_queue(s, 0x3B, 1);
+ /* mode */
+ /*
+ bit 7 - absolute or relative position
+ bit 6 - 0 for 40 packets/sec, 1 for 80 pack/sec
+ bit 3 - 1 for sleep mode, 0 for normal
+ bit 2 - 1 to detect tap/drag, 0 to disable
+ bit 1 - packet size, only valid for serial protocol
+ bit 0 - 0 for normal packets, 1 for enhanced packets
+ (absolute mode packets which have finger width)
+ */
+ if (s->touchpad.absolute && s->touchpad.high)
+ {
+ spare = 0xC0;
+ }
+ else if (s->touchpad.absolute)
+ {
+ spare = 0x80;
+ }
+ else if (s->touchpad.high)
+ {
+ spare = 0x40;
+ }
+ else
+ {
+ spare = 0x00;
+ }
+ kbd_queue(s, spare, 1);
+ /* special verification byte */
+ kbd_queue(s, 0x47, 1);
+ break;
+ /* read touchpad capabilites */
+ case 0x02:
+ /* extended capability first 8 bits */
+ kbd_queue(s, 0x00, 1);
+ /* special verification byte */
+ kbd_queue(s, 0x47, 1);
+ /* extended capability last 8 bits */
+ kbd_queue(s, 0x00, 1);
+ /* basicly, we don't have any capabilites ;0 */
+ break;
+ /* read model id */
+ case 0x03:
+ /*
+ bit 23 = 0 (1 for upsidedownpad)
+ bit 22 = 0 (1 for 90 degree rotated pad)
+ bits 21-16 = 1 (standard model)
+ bits 15-9 = ??? (reserved for synaptics use)
+ bit 7 = 1
+ bit 6 = 0 (1 for sensing pens)
+ bit 5 = 1
+ bits 3-0 = 1 (rectangular geometery)
+ */
+ kbd_queue(s, 0xFC, 1);
+ kbd_queue(s, 0x00, 1);
+ kbd_queue(s, 0xF5, 1); //F7 for sensing pens
+ break;
+ /* read serial number prefix */
+ case 0x06:
+ /* strange how they have this query even though
+ no touchpad actually has serial numbers */
+ /* return serial prefix of 0 if we dont have one */
+ kbd_queue(s, 0x00, 1);
+ kbd_queue(s, 0x00, 1);
+ kbd_queue(s, 0x00, 1);
+ break;
+ /* read serial number suffix */
+ case 0x07:
+ /* undefined if we dont have a valid serial prefix */
+ kbd_queue(s, 0x00, 1);
+ kbd_queue(s, 0x00, 1);
+ kbd_queue(s, 0x00, 1);
+ break;
+ /* read resolutions */
+ case 0x08:
+ /* going to go with infoSensor = 1 (Standard model) here */
+ /* absolute X in abolute units per mm */
+ kbd_queue(s, 85, 1);
+ /* undefined but first bit 7 will be set to 1...
+ hell I'm going to set them all to 1 */
+ kbd_queue(s, 0xFF, 1);
+ /* absolute Y in abolute units per mm */
+ kbd_queue(s, 94, 1);
+ break;
+ default:
+ /* invalid commands return undefined data */
+ kbd_queue(s, 0x00, 1);
+ kbd_queue(s, 0x00, 1);
+ kbd_queue(s, 0x00, 1);
+ break;
+ }
+ }
+ else
+ {
+ /* not a special command, just do the regular stuff */
+ kbd_queue(s, AUX_ACK, 1);
+ kbd_queue(s, s->mouse_status, 1);
+ kbd_queue(s, s->mouse_resolution, 1);
+ kbd_queue(s, s->mouse_sample_rate, 1);
+ }
break;
case AUX_POLL:
kbd_queue(s, AUX_ACK, 1);
@@ -535,12 +707,14 @@
s->mouse_sample_rate = 100;
s->mouse_resolution = 2;
s->mouse_status = 0;
+ s->touchpad.absolute = 0;
kbd_queue(s, AUX_ACK, 1);
break;
case AUX_RESET:
s->mouse_sample_rate = 100;
s->mouse_resolution = 2;
s->mouse_status = 0;
+ s->touchpad.absolute = 0;
kbd_queue(s, AUX_ACK, 1);
kbd_queue(s, 0xaa, 1);
kbd_queue(s, s->mouse_type, 1);
@@ -550,6 +724,13 @@
}
break;
case AUX_SET_SAMPLE:
+ if (res_count == 4 && val == 0x14)
+ {
+ /* time for the special stuff */
+ /* below is how we get the real synaptic command */
+ val = (rr*64) + (ss*16) + (tt*4) + uu;
+ /* TODO: set the mode byte */
+ } else
s->mouse_sample_rate = val;
#if 0
/* detect IMPS/2 or IMEX */
@@ -583,6 +764,34 @@
s->mouse_write_cmd = -1;
break;
case AUX_SET_RES:
+ if (last_com != AUX_SET_RES)
+ {
+ /* if its not 4 in a row, its not a command */
+ /* FIXME: if we are set 8 of these in a row, or 12, or 16,
+ or etc ... or 4^n commands, then the nth'd mode byte sent might
+ still work. not sure if this is how things are suppose to be
+ or not. */
+ res_count = 0;
+ }
+ res_count++;
+ if (res_count > 4) res_count = 4;
+ switch(res_count)
+ /* we need to save the val in the right spots to get the
+ real command later */
+ {
+ case 1:
+ break;
+ rr = val;
+ case 2:
+ ss = val;
+ break;
+ case 3:
+ tt = val;
+ break;
+ case 4:
+ uu = val;
+ break;
+ }
s->mouse_resolution = val;
kbd_queue(s, AUX_ACK, 1);
s->mouse_write_cmd = -1;
[-- Attachment #3: pckbd.c.new --]
[-- Type: text/plain, Size: 23959 bytes --]
/*
* QEMU PC keyboard emulation
*
* Copyright (c) 2003 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "vl.h"
/* debug PC keyboard */
//#define DEBUG_KBD
/* debug PC keyboard : only mouse */
//#define DEBUG_MOUSE
/* Keyboard Controller Commands */
#define KBD_CCMD_READ_MODE 0x20 /* Read mode bits */
#define KBD_CCMD_WRITE_MODE 0x60 /* Write mode bits */
#define KBD_CCMD_GET_VERSION 0xA1 /* Get controller version */
#define KBD_CCMD_MOUSE_DISABLE 0xA7 /* Disable mouse interface */
#define KBD_CCMD_MOUSE_ENABLE 0xA8 /* Enable mouse interface */
#define KBD_CCMD_TEST_MOUSE 0xA9 /* Mouse interface test */
#define KBD_CCMD_SELF_TEST 0xAA /* Controller self test */
#define KBD_CCMD_KBD_TEST 0xAB /* Keyboard interface test */
#define KBD_CCMD_KBD_DISABLE 0xAD /* Keyboard interface disable */
#define KBD_CCMD_KBD_ENABLE 0xAE /* Keyboard interface enable */
#define KBD_CCMD_READ_INPORT 0xC0 /* read input port */
#define KBD_CCMD_READ_OUTPORT 0xD0 /* read output port */
#define KBD_CCMD_WRITE_OUTPORT 0xD1 /* write output port */
#define KBD_CCMD_WRITE_OBUF 0xD2
#define KBD_CCMD_WRITE_AUX_OBUF 0xD3 /* Write to output buffer as if
initiated by the auxiliary device */
#define KBD_CCMD_WRITE_MOUSE 0xD4 /* Write the following byte to the mouse */
#define KBD_CCMD_DISABLE_A20 0xDD /* HP vectra only ? */
#define KBD_CCMD_ENABLE_A20 0xDF /* HP vectra only ? */
#define KBD_CCMD_RESET 0xFE
/* Keyboard Commands */
#define KBD_CMD_SET_LEDS 0xED /* Set keyboard leds */
#define KBD_CMD_ECHO 0xEE
#define KBD_CMD_GET_ID 0xF2 /* get keyboard ID */
#define KBD_CMD_SET_RATE 0xF3 /* Set typematic rate */
#define KBD_CMD_ENABLE 0xF4 /* Enable scanning */
#define KBD_CMD_RESET_DISABLE 0xF5 /* reset and disable scanning */
#define KBD_CMD_RESET_ENABLE 0xF6 /* reset and enable scanning */
#define KBD_CMD_RESET 0xFF /* Reset */
/* Keyboard Replies */
#define KBD_REPLY_POR 0xAA /* Power on reset */
#define KBD_REPLY_ACK 0xFA /* Command ACK */
#define KBD_REPLY_RESEND 0xFE /* Command NACK, send the cmd again */
/* Status Register Bits */
#define KBD_STAT_OBF 0x01 /* Keyboard output buffer full */
#define KBD_STAT_IBF 0x02 /* Keyboard input buffer full */
#define KBD_STAT_SELFTEST 0x04 /* Self test successful */
#define KBD_STAT_CMD 0x08 /* Last write was a command write (0=data) */
#define KBD_STAT_UNLOCKED 0x10 /* Zero if keyboard locked */
#define KBD_STAT_MOUSE_OBF 0x20 /* Mouse output buffer full */
#define KBD_STAT_GTO 0x40 /* General receive/xmit timeout */
#define KBD_STAT_PERR 0x80 /* Parity error */
/* Controller Mode Register Bits */
#define KBD_MODE_KBD_INT 0x01 /* Keyboard data generate IRQ1 */
#define KBD_MODE_MOUSE_INT 0x02 /* Mouse data generate IRQ12 */
#define KBD_MODE_SYS 0x04 /* The system flag (?) */
#define KBD_MODE_NO_KEYLOCK 0x08 /* The keylock doesn't affect the keyboard if set */
#define KBD_MODE_DISABLE_KBD 0x10 /* Disable keyboard interface */
#define KBD_MODE_DISABLE_MOUSE 0x20 /* Disable mouse interface */
#define KBD_MODE_KCC 0x40 /* Scan code conversion to PC format */
#define KBD_MODE_RFU 0x80
/* Mouse Commands */
#define AUX_SET_SCALE11 0xE6 /* Set 1:1 scaling */
#define AUX_SET_SCALE21 0xE7 /* Set 2:1 scaling */
#define AUX_SET_RES 0xE8 /* Set resolution */
#define AUX_GET_SCALE 0xE9 /* Get scaling factor */
/* according to Synaptic docs this $E9 is really 3-byte status */
#define AUX_SET_STREAM 0xEA /* Set stream mode */
#define AUX_POLL 0xEB /* Poll */
#define AUX_RESET_WRAP 0xEC /* Reset wrap mode */
#define AUX_SET_WRAP 0xEE /* Set wrap mode */
#define AUX_SET_REMOTE 0xF0 /* Set remote mode */
#define AUX_GET_TYPE 0xF2 /* Get type */
#define AUX_SET_SAMPLE 0xF3 /* Set sample rate */
#define AUX_ENABLE_DEV 0xF4 /* Enable aux device */
#define AUX_DISABLE_DEV 0xF5 /* Disable aux device */
#define AUX_SET_DEFAULT 0xF6
#define AUX_RESET 0xFF /* Reset aux device */
#define AUX_ACK 0xFA /* Command byte ACK. */
#define MOUSE_STATUS_REMOTE 0x40
#define MOUSE_STATUS_ENABLED 0x20
#define MOUSE_STATUS_SCALE21 0x10
#define KBD_QUEUE_SIZE 256
typedef struct {
uint8_t data[KBD_QUEUE_SIZE];
int rptr, wptr, count;
} KBDQueue;
typedef struct {
int absolute;
int high;
} TouchPad;
typedef struct KBDState {
KBDQueue queues[2];
uint8_t write_cmd; /* if non zero, write data to port 60 is expected */
uint8_t status;
uint8_t mode;
/* keyboard state */
int kbd_write_cmd;
int scan_enabled;
/* mouse state */
int mouse_write_cmd;
uint8_t mouse_status;
uint8_t mouse_resolution;
uint8_t mouse_sample_rate;
uint8_t mouse_wrap;
uint8_t mouse_type; /* 0 = PS2, 3 = IMPS/2, 4 = IMEX */
uint8_t mouse_detect_state;
int mouse_dx; /* current values, needed for 'poll' mode */
int mouse_dy;
int mouse_dz;
uint8_t mouse_buttons;
TouchPad touchpad;
} KBDState;
KBDState kbd_state;
int reset_requested;
/* update irq and KBD_STAT_[MOUSE_]OBF */
/* XXX: not generating the irqs if KBD_MODE_DISABLE_KBD is set may be
incorrect, but it avoids having to simulate exact delays */
static void kbd_update_irq(KBDState *s)
{
int irq12_level, irq1_level;
irq1_level = 0;
irq12_level = 0;
s->status &= ~(KBD_STAT_OBF | KBD_STAT_MOUSE_OBF);
if (s->queues[0].count != 0 ||
s->queues[1].count != 0) {
s->status |= KBD_STAT_OBF;
if (s->queues[1].count != 0) {
s->status |= KBD_STAT_MOUSE_OBF;
if (s->mode & KBD_MODE_MOUSE_INT)
irq12_level = 1;
} else {
if ((s->mode & KBD_MODE_KBD_INT) &&
!(s->mode & KBD_MODE_DISABLE_KBD))
irq1_level = 1;
}
}
pic_set_irq(1, irq1_level);
pic_set_irq(12, irq12_level);
}
static void kbd_queue(KBDState *s, int b, int aux)
{
KBDQueue *q = &s->queues[aux];
#if defined(DEBUG_MOUSE) || defined(DEBUG_KBD)
if (aux)
printf("mouse event: 0x%02x\n", b);
#ifdef DEBUG_KBD
else
printf("kbd event: 0x%02x\n", b);
#endif
#endif
if (q->count >= KBD_QUEUE_SIZE)
return;
q->data[q->wptr] = b;
if (++q->wptr == KBD_QUEUE_SIZE)
q->wptr = 0;
q->count++;
kbd_update_irq(s);
}
void kbd_put_keycode(int keycode)
{
KBDState *s = &kbd_state;
kbd_queue(s, keycode, 0);
}
static uint32_t kbd_read_status(void *opaque, uint32_t addr)
{
KBDState *s = opaque;
int val;
val = s->status;
#if defined(DEBUG_KBD)
printf("kbd: read status=0x%02x\n", val);
#endif
return val;
}
static void kbd_write_command(void *opaque, uint32_t addr, uint32_t val)
{
KBDState *s = opaque;
#ifdef DEBUG_KBD
printf("kbd: write cmd=0x%02x\n", val);
#endif
switch(val) {
case KBD_CCMD_READ_MODE:
kbd_queue(s, s->mode, 0);
break;
case KBD_CCMD_WRITE_MODE:
case KBD_CCMD_WRITE_OBUF:
case KBD_CCMD_WRITE_AUX_OBUF:
case KBD_CCMD_WRITE_MOUSE:
case KBD_CCMD_WRITE_OUTPORT:
s->write_cmd = val;
break;
case KBD_CCMD_MOUSE_DISABLE:
s->mode |= KBD_MODE_DISABLE_MOUSE;
break;
case KBD_CCMD_MOUSE_ENABLE:
s->mode &= ~KBD_MODE_DISABLE_MOUSE;
break;
case KBD_CCMD_TEST_MOUSE:
kbd_queue(s, 0x00, 0);
break;
case KBD_CCMD_SELF_TEST:
s->status |= KBD_STAT_SELFTEST;
kbd_queue(s, 0x55, 0);
break;
case KBD_CCMD_KBD_TEST:
kbd_queue(s, 0x00, 0);
break;
case KBD_CCMD_KBD_DISABLE:
s->mode |= KBD_MODE_DISABLE_KBD;
kbd_update_irq(s);
break;
case KBD_CCMD_KBD_ENABLE:
s->mode &= ~KBD_MODE_DISABLE_KBD;
kbd_update_irq(s);
break;
case KBD_CCMD_READ_INPORT:
kbd_queue(s, 0x00, 0);
break;
case KBD_CCMD_READ_OUTPORT:
/* XXX: check that */
#ifdef TARGET_I386
val = 0x01 | (((cpu_single_env->a20_mask >> 20) & 1) << 1);
#else
val = 0x01;
#endif
if (s->status & KBD_STAT_OBF)
val |= 0x10;
if (s->status & KBD_STAT_MOUSE_OBF)
val |= 0x20;
kbd_queue(s, val, 0);
break;
#ifdef TARGET_I386
case KBD_CCMD_ENABLE_A20:
cpu_x86_set_a20(cpu_single_env, 1);
break;
case KBD_CCMD_DISABLE_A20:
cpu_x86_set_a20(cpu_single_env, 0);
break;
#endif
case KBD_CCMD_RESET:
reset_requested = 1;
cpu_interrupt(cpu_single_env, CPU_INTERRUPT_EXIT);
break;
case 0xff:
/* ignore that - I don't know what is its use */
break;
default:
fprintf(stderr, "qemu: unsupported keyboard cmd=0x%02x\n", val);
break;
}
}
static uint32_t kbd_read_data(void *opaque, uint32_t addr)
{
KBDState *s = opaque;
KBDQueue *q;
int val, index;
q = &s->queues[1]; /* first check AUX data */
if (q->count == 0)
q = &s->queues[0]; /* then check KBD data */
if (q->count == 0) {
/* NOTE: if no data left, we return the last keyboard one
(needed for EMM386) */
/* XXX: need a timer to do things correctly */
q = &s->queues[0];
index = q->rptr - 1;
if (index < 0)
index = KBD_QUEUE_SIZE - 1;
val = q->data[index];
} else {
val = q->data[q->rptr];
if (++q->rptr == KBD_QUEUE_SIZE)
q->rptr = 0;
q->count--;
/* reading deasserts IRQ */
if (q == &s->queues[0])
pic_set_irq(1, 0);
else
pic_set_irq(12, 0);
}
/* reassert IRQs if data left */
kbd_update_irq(s);
#ifdef DEBUG_KBD
printf("kbd: read data=0x%02x\n", val);
#endif
return val;
}
static void kbd_reset_keyboard(KBDState *s)
{
s->scan_enabled = 1;
}
static void kbd_write_keyboard(KBDState *s, int val)
{
switch(s->kbd_write_cmd) {
default:
case -1:
switch(val) {
case 0x00:
kbd_queue(s, KBD_REPLY_ACK, 0);
break;
case 0x05:
kbd_queue(s, KBD_REPLY_RESEND, 0);
break;
case KBD_CMD_GET_ID:
kbd_queue(s, KBD_REPLY_ACK, 0);
kbd_queue(s, 0xab, 0);
kbd_queue(s, 0x83, 0);
break;
case KBD_CMD_ECHO:
kbd_queue(s, KBD_CMD_ECHO, 0);
break;
case KBD_CMD_ENABLE:
s->scan_enabled = 1;
kbd_queue(s, KBD_REPLY_ACK, 0);
break;
case KBD_CMD_SET_LEDS:
case KBD_CMD_SET_RATE:
s->kbd_write_cmd = val;
kbd_queue(s, KBD_REPLY_ACK, 0);
break;
case KBD_CMD_RESET_DISABLE:
kbd_reset_keyboard(s);
s->scan_enabled = 0;
kbd_queue(s, KBD_REPLY_ACK, 0);
break;
case KBD_CMD_RESET_ENABLE:
kbd_reset_keyboard(s);
s->scan_enabled = 1;
kbd_queue(s, KBD_REPLY_ACK, 0);
break;
case KBD_CMD_RESET:
kbd_reset_keyboard(s);
kbd_queue(s, KBD_REPLY_ACK, 0);
kbd_queue(s, KBD_REPLY_POR, 0);
break;
default:
kbd_queue(s, KBD_REPLY_ACK, 0);
break;
}
break;
case KBD_CMD_SET_LEDS:
kbd_queue(s, KBD_REPLY_ACK, 0);
s->kbd_write_cmd = -1;
break;
case KBD_CMD_SET_RATE:
kbd_queue(s, KBD_REPLY_ACK, 0);
s->kbd_write_cmd = -1;
break;
}
}
static void kbd_mouse_send_packet(KBDState *s)
{
unsigned int b;
int dx1, dy1, dz1;
dx1 = s->mouse_dx;
dy1 = s->mouse_dy;
dz1 = s->mouse_dz;
if (s->touchpad.absolute)
{
int dz2, dleftnright, dg, df;
if (dx1 > 6143)
dx1 = 6143;
else if (dx1 < 0)
dx1 = 0;
if (dy1 > 6143)
dy1 = 6143;
else if (dy1 < 0)
dy1 = 0;
dz2 = 80; /* normal finger pressure */
dg = 0; /* guesture not supported */
df = 0; /* finger not supported */
dleftnright = (s->mouse_buttons & 0x07);
/*
X: 13 bits --return absolute x ord
Y: 13 bits --return absolute y ord
Z: 8 bits --return constant 80 since we don't know how hard the user
is pressing on the mouse button ;) 80 is the default for pen
pressure, as touchpads cant sense what pressure a pen makes.
W: 4 bits --return 0, we don't support finger width (should we?)
left: 1 bit --is left button pressed
right: 1 bit --is right button pressed
guesture: 1 bit --we dont support, return 0
finger: 1 bit --ditto
total: 42 bits in 6 bytes
note that Synaptics drivers ignore the finger and guesture bits and
consider them redundant
*/
/*
note: the packet setup is different when Wmode = 1, but
this doesn't apply since we don't support Wmode capability
format of packet is as follows:
*/
// 1 0 finger reserved 0 gesture right left
kbd_queue(s, (0x80 | (df ? 0x20 : 0) | (dg ? 0x04 : 0) | dleftnright), 1);
kbd_queue(s, ((dy1 & 0xF) * 256) + (dx1 & 0xF), 1);
kbd_queue(s, 80, 1); //byte 3
// 1 1 y-12 x-12 0 gesture right left
kbd_queue(s, (0xC0 | ((dy1 & 1000) ? 0x20 : 0) | ((dx1 & 1000) ? 0x10 : 0) | (dg ? 0x04 : 0) | dleftnright), 1);
kbd_queue(s, dx1 & 0xFF, 1);
kbd_queue(s, dy1 & 0xFF, 1);
return;
}
/* XXX: increase range to 8 bits ? */
if (dx1 > 127)
dx1 = 127;
else if (dx1 < -127)
dx1 = -127;
if (dy1 > 127)
dy1 = 127;
else if (dy1 < -127)
dy1 = -127;
b = 0x08 | ((dx1 < 0) << 4) | ((dy1 < 0) << 5) | (s->mouse_buttons & 0x07);
kbd_queue(s, b, 1);
kbd_queue(s, dx1 & 0xff, 1);
kbd_queue(s, dy1 & 0xff, 1);
/* extra byte for IMPS/2 or IMEX */
switch(s->mouse_type) {
default:
break;
case 3:
if (dz1 > 127)
dz1 = 127;
else if (dz1 < -127)
dz1 = -127;
kbd_queue(s, dz1 & 0xff, 1);
break;
case 4:
if (dz1 > 7)
dz1 = 7;
else if (dz1 < -7)
dz1 = -7;
b = (dz1 & 0x0f) | ((s->mouse_buttons & 0x18) << 1);
kbd_queue(s, b, 1);
break;
}
/* update deltas */
s->mouse_dx -= dx1;
s->mouse_dy -= dy1;
s->mouse_dz -= dz1;
}
void kbd_mouse_event(int dx, int dy, int dz, int buttons_state)
{
KBDState *s = &kbd_state;
/* check if deltas are recorded when disabled */
if (!(s->mouse_status & MOUSE_STATUS_ENABLED))
return;
s->mouse_dx += dx;
s->mouse_dy -= dy;
s->mouse_dz += dz;
/* XXX: SDL sometimes generates nul events: we delete them */
if (s->mouse_dx == 0 && s->mouse_dy == 0 && s->mouse_dz == 0 &&
s->mouse_buttons == buttons_state)
return;
s->mouse_buttons = buttons_state;
if (!(s->mouse_status & MOUSE_STATUS_REMOTE) &&
(s->queues[1].count < (KBD_QUEUE_SIZE - 16))) {
for(;;) {
/* if not remote, send event. Multiple events are sent if
too big deltas */
kbd_mouse_send_packet(s);
if (s->mouse_dx == 0 && s->mouse_dy == 0 && s->mouse_dz == 0)
break;
}
}
}
static void kbd_write_mouse(KBDState *s, int val)
{
/* variables needed to store synaptics command info */
static int rr = 0, ss = 0, tt = 0, uu = 0, res_count = 0, last_com = 0;
int spare;
#ifdef DEBUG_MOUSE
printf("kbd: write mouse 0x%02x\n", val);
#endif
last_com = s->mouse_write_cmd;
switch(s->mouse_write_cmd) {
default:
case -1:
/* mouse command */
if (s->mouse_wrap) {
if (val == AUX_RESET_WRAP) {
s->mouse_wrap = 0;
kbd_queue(s, AUX_ACK, 1);
return;
} else if (val != AUX_RESET) {
kbd_queue(s, val, 1);
return;
}
}
last_com = val;
switch(val) {
case AUX_SET_SCALE11:
s->mouse_status &= ~MOUSE_STATUS_SCALE21;
kbd_queue(s, AUX_ACK, 1);
break;
case AUX_SET_SCALE21:
s->mouse_status |= MOUSE_STATUS_SCALE21;
kbd_queue(s, AUX_ACK, 1);
break;
case AUX_SET_STREAM:
s->mouse_status &= ~MOUSE_STATUS_REMOTE;
kbd_queue(s, AUX_ACK, 1);
break;
case AUX_SET_WRAP:
s->mouse_wrap = 1;
kbd_queue(s, AUX_ACK, 1);
break;
case AUX_SET_REMOTE:
s->mouse_status |= MOUSE_STATUS_REMOTE;
kbd_queue(s, AUX_ACK, 1);
break;
case AUX_GET_TYPE:
kbd_queue(s, AUX_ACK, 1);
kbd_queue(s, s->mouse_type, 1);
break;
case AUX_SET_RES:
case AUX_SET_SAMPLE:
s->mouse_write_cmd = val;
kbd_queue(s, AUX_ACK, 1);
break;
case AUX_GET_SCALE:
if (res_count == 4)
{
/* time for the special stuff */
kbd_queue(s, AUX_ACK, 1);
/* below is how we get the real synaptic command */
val = (rr*64) + (ss*16) + (tt*4) + uu;
switch(val)
{
/* id touchpad */
case 0x00:
/* info Minor */
kbd_queue(s, 0x00, 1);
/* special verification byte */
kbd_queue(s, 0x47, 1);
/* info Major * 0x10 + Info ModelCode*/
kbd_queue(s, 4 * 0x10 + 0, 1);
break;
/* read touchpad modes */
case 0x01:
/* special verification byte */
kbd_queue(s, 0x3B, 1);
/* mode */
/*
bit 7 - absolute or relative position
bit 6 - 0 for 40 packets/sec, 1 for 80 pack/sec
bit 3 - 1 for sleep mode, 0 for normal
bit 2 - 1 to detect tap/drag, 0 to disable
bit 1 - packet size, only valid for serial protocol
bit 0 - 0 for normal packets, 1 for enhanced packets
(absolute mode packets which have finger width)
*/
if (s->touchpad.absolute && s->touchpad.high)
{
spare = 0xC0;
}
else if (s->touchpad.absolute)
{
spare = 0x80;
}
else if (s->touchpad.high)
{
spare = 0x40;
}
else
{
spare = 0x00;
}
kbd_queue(s, spare, 1);
/* special verification byte */
kbd_queue(s, 0x47, 1);
break;
/* read touchpad capabilites */
case 0x02:
/* extended capability first 8 bits */
kbd_queue(s, 0x00, 1);
/* special verification byte */
kbd_queue(s, 0x47, 1);
/* extended capability last 8 bits */
kbd_queue(s, 0x00, 1);
/* basicly, we don't have any capabilites ;0 */
break;
/* read model id */
case 0x03:
/*
bit 23 = 0 (1 for upsidedownpad)
bit 22 = 0 (1 for 90 degree rotated pad)
bits 21-16 = 1 (standard model)
bits 15-9 = ??? (reserved for synaptics use)
bit 7 = 1
bit 6 = 0 (1 for sensing pens)
bit 5 = 1
bits 3-0 = 1 (rectangular geometery)
*/
kbd_queue(s, 0xFC, 1);
kbd_queue(s, 0x00, 1);
kbd_queue(s, 0xF5, 1); //F7 for sensing pens
break;
/* read serial number prefix */
case 0x06:
/* strange how they have this query even though
no touchpad actually has serial numbers */
/* return serial prefix of 0 if we dont have one */
kbd_queue(s, 0x00, 1);
kbd_queue(s, 0x00, 1);
kbd_queue(s, 0x00, 1);
break;
/* read serial number suffix */
case 0x07:
/* undefined if we dont have a valid serial prefix */
kbd_queue(s, 0x00, 1);
kbd_queue(s, 0x00, 1);
kbd_queue(s, 0x00, 1);
break;
/* read resolutions */
case 0x08:
/* going to go with infoSensor = 1 (Standard model) here */
/* absolute X in abolute units per mm */
kbd_queue(s, 85, 1);
/* undefined but first bit 7 will be set to 1...
hell I'm going to set them all to 1 */
kbd_queue(s, 0xFF, 1);
/* absolute Y in abolute units per mm */
kbd_queue(s, 94, 1);
break;
default:
/* invalid commands return undefined data */
kbd_queue(s, 0x00, 1);
kbd_queue(s, 0x00, 1);
kbd_queue(s, 0x00, 1);
break;
}
}
else
{
/* not a special command, just do the regular stuff */
kbd_queue(s, AUX_ACK, 1);
kbd_queue(s, s->mouse_status, 1);
kbd_queue(s, s->mouse_resolution, 1);
kbd_queue(s, s->mouse_sample_rate, 1);
}
break;
case AUX_POLL:
kbd_queue(s, AUX_ACK, 1);
kbd_mouse_send_packet(s);
break;
case AUX_ENABLE_DEV:
s->mouse_status |= MOUSE_STATUS_ENABLED;
kbd_queue(s, AUX_ACK, 1);
break;
case AUX_DISABLE_DEV:
s->mouse_status &= ~MOUSE_STATUS_ENABLED;
kbd_queue(s, AUX_ACK, 1);
break;
case AUX_SET_DEFAULT:
s->mouse_sample_rate = 100;
s->mouse_resolution = 2;
s->mouse_status = 0;
s->touchpad.absolute = 0;
kbd_queue(s, AUX_ACK, 1);
break;
case AUX_RESET:
s->mouse_sample_rate = 100;
s->mouse_resolution = 2;
s->mouse_status = 0;
s->touchpad.absolute = 0;
kbd_queue(s, AUX_ACK, 1);
kbd_queue(s, 0xaa, 1);
kbd_queue(s, s->mouse_type, 1);
break;
default:
break;
}
break;
case AUX_SET_SAMPLE:
if (res_count == 4 && val == 0x14)
{
/* time for the special stuff */
/* below is how we get the real synaptic command */
val = (rr*64) + (ss*16) + (tt*4) + uu;
/* TODO: set the mode byte */
} else
s->mouse_sample_rate = val;
#if 0
/* detect IMPS/2 or IMEX */
switch(s->mouse_detect_state) {
default:
case 0:
if (val == 200)
s->mouse_detect_state = 1;
break;
case 1:
if (val == 100)
s->mouse_detect_state = 2;
else if (val == 200)
s->mouse_detect_state = 3;
else
s->mouse_detect_state = 0;
break;
case 2:
if (val == 80)
s->mouse_type = 3; /* IMPS/2 */
s->mouse_detect_state = 0;
break;
case 3:
if (val == 80)
s->mouse_type = 4; /* IMEX */
s->mouse_detect_state = 0;
break;
}
#endif
kbd_queue(s, AUX_ACK, 1);
s->mouse_write_cmd = -1;
break;
case AUX_SET_RES:
if (last_com != AUX_SET_RES)
{
/* if its not 4 in a row, its not a command */
/* FIXME: if we are set 8 of these in a row, or 12, or 16,
or etc ... or 4^n commands, then the nth'd mode byte sent might
still work. not sure if this is how things are suppose to be
or not. */
res_count = 0;
}
res_count++;
if (res_count > 4) res_count = 4;
switch(res_count)
/* we need to save the val in the right spots to get the
real command later */
{
case 1:
break;
rr = val;
case 2:
ss = val;
break;
case 3:
tt = val;
break;
case 4:
uu = val;
break;
}
s->mouse_resolution = val;
kbd_queue(s, AUX_ACK, 1);
s->mouse_write_cmd = -1;
break;
}
}
void kbd_write_data(void *opaque, uint32_t addr, uint32_t val)
{
KBDState *s = opaque;
#ifdef DEBUG_KBD
printf("kbd: write data=0x%02x\n", val);
#endif
switch(s->write_cmd) {
case 0:
kbd_write_keyboard(s, val);
break;
case KBD_CCMD_WRITE_MODE:
s->mode = val;
kbd_update_irq(s);
break;
case KBD_CCMD_WRITE_OBUF:
kbd_queue(s, val, 0);
break;
case KBD_CCMD_WRITE_AUX_OBUF:
kbd_queue(s, val, 1);
break;
case KBD_CCMD_WRITE_OUTPORT:
#ifdef TARGET_I386
cpu_x86_set_a20(cpu_single_env, (val >> 1) & 1);
#endif
if (!(val & 1)) {
reset_requested = 1;
cpu_interrupt(cpu_single_env, CPU_INTERRUPT_EXIT);
}
break;
case KBD_CCMD_WRITE_MOUSE:
kbd_write_mouse(s, val);
break;
default:
break;
}
s->write_cmd = 0;
}
void kbd_reset(KBDState *s)
{
KBDQueue *q;
int i;
s->kbd_write_cmd = -1;
s->mouse_write_cmd = -1;
s->mode = KBD_MODE_KBD_INT | KBD_MODE_MOUSE_INT;
s->status = KBD_STAT_CMD | KBD_STAT_UNLOCKED;
for(i = 0; i < 2; i++) {
q = &s->queues[i];
q->rptr = 0;
q->wptr = 0;
q->count = 0;
}
}
void kbd_init(void)
{
KBDState *s = &kbd_state;
kbd_reset(s);
register_ioport_read(0x60, 1, 1, kbd_read_data, s);
register_ioport_write(0x60, 1, 1, kbd_write_data, s);
register_ioport_read(0x64, 1, 1, kbd_read_status, s);
register_ioport_write(0x64, 1, 1, kbd_write_command, s);
}
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2004-05-18 15:46 [Qemu-devel] synaptic touchpad emulation Jim C. Brown
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