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-rw-r--r--xorg-server/hw/kdrive/linux/mouse.c1027
1 files changed, 1027 insertions, 0 deletions
diff --git a/xorg-server/hw/kdrive/linux/mouse.c b/xorg-server/hw/kdrive/linux/mouse.c
new file mode 100644
index 000000000..1965342b8
--- /dev/null
+++ b/xorg-server/hw/kdrive/linux/mouse.c
@@ -0,0 +1,1027 @@
+/*
+ * Copyright © 2001 Keith Packard
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Keith Packard not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission. Keith Packard makes no
+ * representations about the suitability of this software for any purpose. It
+ * is provided "as is" without express or implied warranty.
+ *
+ * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <kdrive-config.h>
+#endif
+#define NEED_EVENTS
+#include <errno.h>
+#include <termios.h>
+#include <X11/X.h>
+#include <X11/Xproto.h>
+#include <X11/Xpoll.h>
+#include "inputstr.h"
+#include "scrnintstr.h"
+#include "kdrive.h"
+
+#undef DEBUG
+#undef DEBUG_BYTES
+#define KBUFIO_SIZE 256
+#define MOUSE_TIMEOUT 100
+
+typedef struct _kbufio {
+ int fd;
+ unsigned char buf[KBUFIO_SIZE];
+ int avail;
+ int used;
+} Kbufio;
+
+static Bool
+MouseWaitForReadable (int fd, int timeout)
+{
+ fd_set set;
+ struct timeval tv, *tp;
+ int n;
+ CARD32 done;
+
+ done = GetTimeInMillis () + timeout;
+ for (;;)
+ {
+ FD_ZERO (&set);
+ FD_SET (fd, &set);
+ if (timeout == -1)
+ tp = 0;
+ else
+ {
+ tv.tv_sec = timeout / 1000;
+ tv.tv_usec = (timeout % 1000) * 1000;
+ tp = &tv;
+ }
+ n = select (fd + 1, &set, 0, 0, tp);
+ if (n > 0)
+ return TRUE;
+ if (n < 0 && (errno == EAGAIN || errno == EINTR))
+ {
+ timeout = (int) (done - GetTimeInMillis ());
+ if (timeout > 0)
+ continue;
+ }
+ break;
+ }
+ return FALSE;
+}
+
+static int
+MouseReadByte (Kbufio *b, int timeout)
+{
+ int n;
+ if (b->avail <= b->used)
+ {
+ if (timeout && !MouseWaitForReadable (b->fd, timeout))
+ {
+#ifdef DEBUG_BYTES
+ ErrorF ("\tTimeout %d\n", timeout);
+#endif
+ return -1;
+ }
+ n = read (b->fd, b->buf, KBUFIO_SIZE);
+ if (n <= 0)
+ return -1;
+ b->avail = n;
+ b->used = 0;
+ }
+#ifdef DEBUG_BYTES
+ ErrorF ("\tget %02x\n", b->buf[b->used]);
+#endif
+ return b->buf[b->used++];
+}
+
+#if NOTUSED
+static int
+MouseFlush (Kbufio *b, char *buf, int size)
+{
+ CARD32 now = GetTimeInMillis ();
+ CARD32 done = now + 100;
+ int c;
+ int n = 0;
+
+ while ((c = MouseReadByte (b, done - now)) != -1)
+ {
+ if (buf)
+ {
+ if (n == size)
+ {
+ memmove (buf, buf + 1, size - 1);
+ n--;
+ }
+ buf[n++] = c;
+ }
+ now = GetTimeInMillis ();
+ if ((INT32) (now - done) >= 0)
+ break;
+ }
+ return n;
+}
+
+static int
+MousePeekByte (Kbufio *b, int timeout)
+{
+ int c;
+
+ c = MouseReadByte (b, timeout);
+ if (c != -1)
+ --b->used;
+ return c;
+}
+#endif /* NOTUSED */
+
+static Bool
+MouseWaitForWritable (int fd, int timeout)
+{
+ fd_set set;
+ struct timeval tv, *tp;
+ int n;
+
+ FD_ZERO (&set);
+ FD_SET (fd, &set);
+ if (timeout == -1)
+ tp = 0;
+ else
+ {
+ tv.tv_sec = timeout / 1000;
+ tv.tv_usec = (timeout % 1000) * 1000;
+ tp = &tv;
+ }
+ n = select (fd + 1, 0, &set, 0, tp);
+ if (n > 0)
+ return TRUE;
+ return FALSE;
+}
+
+static Bool
+MouseWriteByte (int fd, unsigned char c, int timeout)
+{
+ int ret;
+
+#ifdef DEBUG_BYTES
+ ErrorF ("\tput %02x\n", c);
+#endif
+ for (;;)
+ {
+ ret = write (fd, &c, 1);
+ if (ret == 1)
+ return TRUE;
+ if (ret == 0)
+ return FALSE;
+ if (errno != EWOULDBLOCK)
+ return FALSE;
+ if (!MouseWaitForWritable (fd, timeout))
+ return FALSE;
+ }
+}
+
+static Bool
+MouseWriteBytes (int fd, unsigned char *c, int n, int timeout)
+{
+ while (n--)
+ if (!MouseWriteByte (fd, *c++, timeout))
+ return FALSE;
+ return TRUE;
+}
+
+#define MAX_MOUSE 10 /* maximum length of mouse protocol */
+#define MAX_SKIP 16 /* number of error bytes before switching */
+#define MAX_VALID 4 /* number of valid packets before accepting */
+
+typedef struct _kmouseProt {
+ char *name;
+ Bool (*Complete) (KdPointerInfo *pi, unsigned char *ev, int ne);
+ int (*Valid) (KdPointerInfo *pi, unsigned char *ev, int ne);
+ Bool (*Parse) (KdPointerInfo *pi, unsigned char *ev, int ne);
+ Bool (*Init) (KdPointerInfo *pi);
+ unsigned char headerMask, headerValid;
+ unsigned char dataMask, dataValid;
+ Bool tty;
+ unsigned int c_iflag;
+ unsigned int c_oflag;
+ unsigned int c_lflag;
+ unsigned int c_cflag;
+ unsigned int speed;
+ unsigned char *init;
+ unsigned long state;
+} KmouseProt;
+
+typedef enum _kmouseStage {
+ MouseBroken, MouseTesting, MouseWorking
+} KmouseStage;
+
+typedef struct _kmouse {
+ Kbufio iob;
+ const KmouseProt *prot;
+ int i_prot;
+ KmouseStage stage; /* protocol verification stage */
+ Bool tty; /* mouse device is a tty */
+ int valid; /* sequential valid events */
+ int tested; /* bytes scanned during Testing phase */
+ int invalid;/* total invalid bytes for this protocol */
+ unsigned long state; /* private per protocol, init to prot->state */
+} Kmouse;
+
+static int mouseValid (KdPointerInfo *pi, unsigned char *ev, int ne)
+{
+ Kmouse *km = pi->driverPrivate;
+ const KmouseProt *prot = km->prot;
+ int i;
+
+ for (i = 0; i < ne; i++)
+ if ((ev[i] & prot->headerMask) == prot->headerValid)
+ break;
+ if (i != 0)
+ return i;
+ for (i = 1; i < ne; i++)
+ if ((ev[i] & prot->dataMask) != prot->dataValid)
+ return -1;
+ return 0;
+}
+
+static Bool threeComplete (KdPointerInfo *pi, unsigned char *ev, int ne)
+{
+ return ne == 3;
+}
+
+static Bool fourComplete (KdPointerInfo *pi, unsigned char *ev, int ne)
+{
+ return ne == 4;
+}
+
+static Bool fiveComplete (KdPointerInfo *pi, unsigned char *ev, int ne)
+{
+ return ne == 5;
+}
+
+static Bool MouseReasonable (KdPointerInfo *pi, unsigned long flags, int dx, int dy)
+{
+ Kmouse *km = pi->driverPrivate;
+
+ if (km->stage == MouseWorking)
+ return TRUE;
+ if (dx < -50 || dx > 50)
+ {
+#ifdef DEBUG
+ ErrorF ("Large X %d\n", dx);
+#endif
+ return FALSE;
+ }
+ if (dy < -50 || dy > 50)
+ {
+#ifdef DEBUG
+ ErrorF ("Large Y %d\n", dy);
+#endif
+ return FALSE;
+ }
+ return TRUE;
+}
+
+/*
+ * Standard PS/2 mouse protocol
+ */
+static Bool ps2Parse (KdPointerInfo *pi, unsigned char *ev, int ne)
+{
+ Kmouse *km = pi->driverPrivate;
+ int dx, dy, dz;
+ unsigned long flags;
+ unsigned long flagsrelease = 0;
+
+ flags = KD_MOUSE_DELTA;
+ if (ev[0] & 4)
+ flags |= KD_BUTTON_2;
+ if (ev[0] & 2)
+ flags |= KD_BUTTON_3;
+ if (ev[0] & 1)
+ flags |= KD_BUTTON_1;
+
+ if (ne > 3)
+ {
+ dz = (int) (signed char) ev[3];
+ if (dz < 0)
+ {
+ flags |= KD_BUTTON_4;
+ flagsrelease = KD_BUTTON_4;
+ }
+ else if (dz > 0)
+ {
+ flags |= KD_BUTTON_5;
+ flagsrelease = KD_BUTTON_5;
+ }
+ }
+
+ dx = ev[1];
+ if (ev[0] & 0x10)
+ dx -= 256;
+ dy = ev[2];
+ if (ev[0] & 0x20)
+ dy -= 256;
+ dy = -dy;
+ if (!MouseReasonable (pi, flags, dx, dy))
+ return FALSE;
+ if (km->stage == MouseWorking)
+ {
+ KdEnqueuePointerEvent (pi, flags, dx, dy, 0);
+ if (flagsrelease)
+ {
+ flags &= ~flagsrelease;
+ KdEnqueuePointerEvent (pi, flags, dx, dy, 0);
+ }
+ }
+ return TRUE;
+}
+
+static Bool ps2Init (KdPointerInfo *pi);
+
+static const KmouseProt ps2Prot = {
+ "ps/2",
+ threeComplete, mouseValid, ps2Parse, ps2Init,
+ 0x08, 0x08, 0x00, 0x00,
+ FALSE
+};
+
+static const KmouseProt imps2Prot = {
+ "imps/2",
+ fourComplete, mouseValid, ps2Parse, ps2Init,
+ 0x08, 0x08, 0x00, 0x00,
+ FALSE
+};
+
+static const KmouseProt exps2Prot = {
+ "exps/2",
+ fourComplete, mouseValid, ps2Parse, ps2Init,
+ 0x08, 0x08, 0x00, 0x00,
+ FALSE
+};
+
+/*
+ * Once the mouse is known to speak ps/2 protocol, go and find out
+ * what advanced capabilities it has and turn them on
+ */
+
+/* these extracted from FreeBSD 4.3 sys/dev/kbd/atkbdcreg.h */
+
+/* aux device commands (sent to KBD_DATA_PORT) */
+#define PSMC_SET_SCALING11 0x00e6
+#define PSMC_SET_SCALING21 0x00e7
+#define PSMC_SET_RESOLUTION 0x00e8
+#define PSMC_SEND_DEV_STATUS 0x00e9
+#define PSMC_SET_STREAM_MODE 0x00ea
+#define PSMC_SEND_DEV_DATA 0x00eb
+#define PSMC_SET_REMOTE_MODE 0x00f0
+#define PSMC_SEND_DEV_ID 0x00f2
+#define PSMC_SET_SAMPLING_RATE 0x00f3
+#define PSMC_ENABLE_DEV 0x00f4
+#define PSMC_DISABLE_DEV 0x00f5
+#define PSMC_SET_DEFAULTS 0x00f6
+#define PSMC_RESET_DEV 0x00ff
+
+/* PSMC_SET_RESOLUTION argument */
+#define PSMD_RES_LOW 0 /* typically 25ppi */
+#define PSMD_RES_MEDIUM_LOW 1 /* typically 50ppi */
+#define PSMD_RES_MEDIUM_HIGH 2 /* typically 100ppi (default) */
+#define PSMD_RES_HIGH 3 /* typically 200ppi */
+#define PSMD_MAX_RESOLUTION PSMD_RES_HIGH
+
+/* PSMC_SET_SAMPLING_RATE */
+#define PSMD_MAX_RATE 255 /* FIXME: not sure if it's possible */
+
+/* aux device ID */
+#define PSM_MOUSE_ID 0
+#define PSM_BALLPOINT_ID 2
+#define PSM_INTELLI_ID 3
+#define PSM_EXPLORER_ID 4
+#define PSM_4DMOUSE_ID 6
+#define PSM_4DPLUS_ID 8
+
+static unsigned char ps2_init[] = {
+ PSMC_ENABLE_DEV,
+ 0,
+};
+
+#define NINIT_PS2 1
+
+static unsigned char wheel_3button_init[] = {
+ PSMC_SET_SAMPLING_RATE, 200,
+ PSMC_SET_SAMPLING_RATE, 100,
+ PSMC_SET_SAMPLING_RATE, 80,
+ PSMC_SEND_DEV_ID,
+ 0,
+};
+
+#define NINIT_IMPS2 4
+
+static unsigned char wheel_5button_init[] = {
+ PSMC_SET_SAMPLING_RATE, 200,
+ PSMC_SET_SAMPLING_RATE, 100,
+ PSMC_SET_SAMPLING_RATE, 80,
+ PSMC_SET_SAMPLING_RATE, 200,
+ PSMC_SET_SAMPLING_RATE, 200,
+ PSMC_SET_SAMPLING_RATE, 80,
+ PSMC_SEND_DEV_ID,
+ 0
+};
+
+#define NINIT_EXPS2 7
+
+static unsigned char intelli_init[] = {
+ PSMC_SET_SAMPLING_RATE, 200,
+ PSMC_SET_SAMPLING_RATE, 100,
+ PSMC_SET_SAMPLING_RATE, 80,
+ 0
+};
+
+#define NINIT_INTELLI 3
+
+static int
+ps2SkipInit (KdPointerInfo *pi, int ninit, Bool ret_next)
+{
+ Kmouse *km = pi->driverPrivate;
+ int c = -1;
+ int skipping;
+ Bool waiting;
+
+ skipping = 0;
+ waiting = FALSE;
+ while (ninit || ret_next)
+ {
+ c = MouseReadByte (&km->iob, MOUSE_TIMEOUT);
+ if (c == -1)
+ break;
+ /* look for ACK */
+ if (c == 0xfa)
+ {
+ ninit--;
+ if (ret_next)
+ waiting = TRUE;
+ }
+ /* look for packet start -- not the response */
+ else if ((c & 0x08) == 0x08)
+ waiting = FALSE;
+ else if (waiting)
+ break;
+ }
+ return c;
+}
+
+static Bool
+ps2Init (KdPointerInfo *pi)
+{
+ Kmouse *km = pi->driverPrivate;
+ int skipping;
+ Bool waiting;
+ int id;
+ unsigned char *init;
+ int ninit;
+
+ /* Send Intellimouse initialization sequence */
+ MouseWriteBytes (km->iob.fd, intelli_init, strlen ((char *) intelli_init), 100);
+ /*
+ * Send ID command
+ */
+ if (!MouseWriteByte (km->iob.fd, PSMC_SEND_DEV_ID, 100))
+ return FALSE;
+ skipping = 0;
+ waiting = FALSE;
+ id = ps2SkipInit (pi, 0, TRUE);
+ switch (id) {
+ case 3:
+ init = wheel_3button_init;
+ ninit = NINIT_IMPS2;
+ km->prot = &imps2Prot;
+ break;
+ case 4:
+ init = wheel_5button_init;
+ ninit = NINIT_EXPS2;
+ km->prot = &exps2Prot;
+ break;
+ default:
+ init = ps2_init;
+ ninit = NINIT_PS2;
+ km->prot = &ps2Prot;
+ break;
+ }
+ if (init)
+ MouseWriteBytes (km->iob.fd, init, strlen ((char *) init), 100);
+ /*
+ * Flush out the available data to eliminate responses to the
+ * initialization string. Make sure any partial event is
+ * skipped
+ */
+ (void) ps2SkipInit (pi, ninit, FALSE);
+ return TRUE;
+}
+
+static Bool busParse (KdPointerInfo *pi, unsigned char *ev, int ne)
+{
+ Kmouse *km = pi->driverPrivate;
+ int dx, dy;
+ unsigned long flags;
+
+ flags = KD_MOUSE_DELTA;
+ dx = (signed char) ev[1];
+ dy = -(signed char) ev[2];
+ if ((ev[0] & 4) == 0)
+ flags |= KD_BUTTON_1;
+ if ((ev[0] & 2) == 0)
+ flags |= KD_BUTTON_2;
+ if ((ev[0] & 1) == 0)
+ flags |= KD_BUTTON_3;
+ if (!MouseReasonable (pi, flags, dx, dy))
+ return FALSE;
+ if (km->stage == MouseWorking)
+ KdEnqueuePointerEvent (pi, flags, dx, dy, 0);
+ return TRUE;
+}
+
+static const KmouseProt busProt = {
+ "bus",
+ threeComplete, mouseValid, busParse, 0,
+ 0xf8, 0x00, 0x00, 0x00,
+ FALSE
+};
+
+/*
+ * Standard MS serial protocol, three bytes
+ */
+
+static Bool msParse (KdPointerInfo *pi, unsigned char *ev, int ne)
+{
+ Kmouse *km = pi->driverPrivate;
+ int dx, dy;
+ unsigned long flags;
+
+ flags = KD_MOUSE_DELTA;
+
+ if (ev[0] & 0x20)
+ flags |= KD_BUTTON_1;
+ if (ev[0] & 0x10)
+ flags |= KD_BUTTON_3;
+
+ dx = (signed char)(((ev[0] & 0x03) << 6) | (ev[1] & 0x3F));
+ dy = (signed char)(((ev[0] & 0x0C) << 4) | (ev[2] & 0x3F));
+ if (!MouseReasonable (pi, flags, dx, dy))
+ return FALSE;
+ if (km->stage == MouseWorking)
+ KdEnqueuePointerEvent (pi, flags, dx, dy, 0);
+ return TRUE;
+}
+
+static const KmouseProt msProt = {
+ "ms",
+ threeComplete, mouseValid, msParse, 0,
+ 0xc0, 0x40, 0xc0, 0x00,
+ TRUE,
+ IGNPAR,
+ 0,
+ 0,
+ CS7 | CSTOPB | CREAD | CLOCAL,
+ B1200,
+};
+
+/*
+ * Logitech mice send 3 or 4 bytes, the only way to tell is to look at the
+ * first byte of a synchronized protocol stream and see if it's got
+ * any bits turned on that can't occur in that fourth byte
+ */
+static Bool logiComplete (KdPointerInfo *pi, unsigned char *ev, int ne)
+{
+ Kmouse *km = pi->driverPrivate;
+
+ if ((ev[0] & 0x40) == 0x40)
+ return ne == 3;
+ if (km->stage != MouseBroken && (ev[0] & ~0x23) == 0)
+ return ne == 1;
+ return FALSE;
+}
+
+static int logiValid (KdPointerInfo *pi, unsigned char *ev, int ne)
+{
+ Kmouse *km = pi->driverPrivate;
+ const KmouseProt *prot = km->prot;
+ int i;
+
+ for (i = 0; i < ne; i++)
+ {
+ if ((ev[i] & 0x40) == 0x40)
+ break;
+ if (km->stage != MouseBroken && (ev[i] & ~0x23) == 0)
+ break;
+ }
+ if (i != 0)
+ return i;
+ for (i = 1; i < ne; i++)
+ if ((ev[i] & prot->dataMask) != prot->dataValid)
+ return -1;
+ return 0;
+}
+
+static Bool logiParse (KdPointerInfo *pi, unsigned char *ev, int ne)
+{
+ Kmouse *km = pi->driverPrivate;
+ int dx, dy;
+ unsigned long flags;
+
+ flags = KD_MOUSE_DELTA;
+
+ if (ne == 3)
+ {
+ if (ev[0] & 0x20)
+ flags |= KD_BUTTON_1;
+ if (ev[0] & 0x10)
+ flags |= KD_BUTTON_3;
+
+ dx = (signed char)(((ev[0] & 0x03) << 6) | (ev[1] & 0x3F));
+ dy = (signed char)(((ev[0] & 0x0C) << 4) | (ev[2] & 0x3F));
+ flags |= km->state & KD_BUTTON_2;
+ }
+ else
+ {
+ if (ev[0] & 0x20)
+ flags |= KD_BUTTON_2;
+ dx = 0;
+ dy = 0;
+ flags |= km->state & (KD_BUTTON_1|KD_BUTTON_3);
+ }
+
+ if (!MouseReasonable (pi, flags, dx, dy))
+ return FALSE;
+ if (km->stage == MouseWorking)
+ KdEnqueuePointerEvent (pi, flags, dx, dy, 0);
+ return TRUE;
+}
+
+static const KmouseProt logiProt = {
+ "logitech",
+ logiComplete, logiValid, logiParse, 0,
+ 0xc0, 0x40, 0xc0, 0x00,
+ TRUE,
+ IGNPAR,
+ 0,
+ 0,
+ CS7 | CSTOPB | CREAD | CLOCAL,
+ B1200,
+};
+
+/*
+ * Mouse systems protocol, 5 bytes
+ */
+static Bool mscParse (KdPointerInfo *pi, unsigned char *ev, int ne)
+{
+ Kmouse *km = pi->driverPrivate;
+ int dx, dy;
+ unsigned long flags;
+
+ flags = KD_MOUSE_DELTA;
+
+ if (!(ev[0] & 0x4))
+ flags |= KD_BUTTON_1;
+ if (!(ev[0] & 0x2))
+ flags |= KD_BUTTON_2;
+ if (!(ev[0] & 0x1))
+ flags |= KD_BUTTON_3;
+ dx = (signed char)(ev[1]) + (signed char)(ev[3]);
+ dy = - ((signed char)(ev[2]) + (signed char)(ev[4]));
+
+ if (!MouseReasonable (pi, flags, dx, dy))
+ return FALSE;
+ if (km->stage == MouseWorking)
+ KdEnqueuePointerEvent (pi, flags, dx, dy, 0);
+ return TRUE;
+}
+
+static const KmouseProt mscProt = {
+ "msc",
+ fiveComplete, mouseValid, mscParse, 0,
+ 0xf8, 0x80, 0x00, 0x00,
+ TRUE,
+ IGNPAR,
+ 0,
+ 0,
+ CS8 | CSTOPB | CREAD | CLOCAL,
+ B1200,
+};
+
+/*
+ * Use logitech before ms -- they're the same except that
+ * logitech sometimes has a fourth byte
+ */
+static const KmouseProt *kmouseProts[] = {
+ &ps2Prot, &imps2Prot, &exps2Prot, &busProt, &logiProt, &msProt, &mscProt,
+};
+
+#define NUM_PROT (sizeof (kmouseProts) / sizeof (kmouseProts[0]))
+
+static void
+MouseInitProtocol (Kmouse *km)
+{
+ int ret;
+ struct termios t;
+
+ if (km->prot->tty)
+ {
+ ret = tcgetattr (km->iob.fd, &t);
+
+ if (ret >= 0)
+ {
+ t.c_iflag = km->prot->c_iflag;
+ t.c_oflag = km->prot->c_oflag;
+ t.c_lflag = km->prot->c_lflag;
+ t.c_cflag = km->prot->c_cflag;
+ cfsetispeed (&t, km->prot->speed);
+ cfsetospeed (&t, km->prot->speed);
+ ret = tcsetattr (km->iob.fd, TCSANOW, &t);
+ }
+ }
+ km->stage = MouseBroken;
+ km->valid = 0;
+ km->tested = 0;
+ km->invalid = 0;
+ km->state = km->prot->state;
+}
+
+static void
+MouseFirstProtocol (Kmouse *km, char *prot)
+{
+ if (prot)
+ {
+ for (km->i_prot = 0; km->i_prot < NUM_PROT; km->i_prot++)
+ if (!strcmp (prot, kmouseProts[km->i_prot]->name))
+ break;
+ if (km->i_prot == NUM_PROT)
+ {
+ int i;
+ ErrorF ("Unknown mouse protocol \"%s\". Pick one of:", prot);
+ for (i = 0; i < NUM_PROT; i++)
+ ErrorF (" %s", kmouseProts[i]->name);
+ ErrorF ("\n");
+ }
+ else
+ {
+ km->prot = kmouseProts[km->i_prot];
+ if (km->tty && !km->prot->tty)
+ ErrorF ("Mouse device is serial port, protocol %s is not serial protocol\n",
+ prot);
+ else if (!km->tty && km->prot->tty)
+ ErrorF ("Mouse device is not serial port, protocol %s is serial protocol\n",
+ prot);
+ }
+ }
+ if (!km->prot)
+ {
+ for (km->i_prot = 0; kmouseProts[km->i_prot]->tty != km->tty; km->i_prot++)
+ ;
+ km->prot = kmouseProts[km->i_prot];
+ }
+ MouseInitProtocol (km);
+}
+
+static void
+MouseNextProtocol (Kmouse *km)
+{
+ do
+ {
+ if (!km->prot)
+ km->i_prot = 0;
+ else
+ if (++km->i_prot == NUM_PROT) km->i_prot = 0;
+ km->prot = kmouseProts[km->i_prot];
+ } while (km->prot->tty != km->tty);
+ MouseInitProtocol (km);
+ ErrorF ("Switching to mouse protocol \"%s\"\n", km->prot->name);
+}
+
+static void
+MouseRead (int mousePort, void *closure)
+{
+ KdPointerInfo *pi = closure;
+ Kmouse *km = pi->driverPrivate;
+ unsigned char event[MAX_MOUSE];
+ int ne;
+ int c;
+ int i;
+ int timeout;
+
+ timeout = 0;
+ ne = 0;
+ for(;;)
+ {
+ c = MouseReadByte (&km->iob, timeout);
+ if (c == -1)
+ {
+ if (ne)
+ {
+ km->invalid += ne + km->tested;
+ km->valid = 0;
+ km->tested = 0;
+ km->stage = MouseBroken;
+ }
+ break;
+ }
+ event[ne++] = c;
+ i = (*km->prot->Valid) (pi, event, ne);
+ if (i != 0)
+ {
+#ifdef DEBUG
+ ErrorF ("Mouse protocol %s broken %d of %d bytes bad\n",
+ km->prot->name, i > 0 ? i : ne, ne);
+#endif
+ if (i > 0 && i < ne)
+ {
+ ne -= i;
+ memmove (event, event + i, ne);
+ }
+ else
+ {
+ i = ne;
+ ne = 0;
+ }
+ km->invalid += i + km->tested;
+ km->valid = 0;
+ km->tested = 0;
+ if (km->stage == MouseWorking)
+ km->i_prot--;
+ km->stage = MouseBroken;
+ if (km->invalid > MAX_SKIP)
+ {
+ MouseNextProtocol (km);
+ ne = 0;
+ }
+ timeout = 0;
+ }
+ else
+ {
+ if ((*km->prot->Complete) (pi, event, ne))
+ {
+ if ((*km->prot->Parse) (pi, event, ne))
+ {
+ switch (km->stage)
+ {
+ case MouseBroken:
+#ifdef DEBUG
+ ErrorF ("Mouse protocol %s seems OK\n",
+ km->prot->name);
+#endif
+ /* do not zero invalid to accumulate invalid bytes */
+ km->valid = 0;
+ km->tested = 0;
+ km->stage = MouseTesting;
+ /* fall through ... */
+ case MouseTesting:
+ km->valid++;
+ km->tested += ne;
+ if (km->valid > MAX_VALID)
+ {
+#ifdef DEBUG
+ ErrorF ("Mouse protocol %s working\n",
+ km->prot->name);
+#endif
+ km->stage = MouseWorking;
+ km->invalid = 0;
+ km->tested = 0;
+ km->valid = 0;
+ if (km->prot->Init && !(*km->prot->Init) (pi))
+ km->stage = MouseBroken;
+ }
+ break;
+ case MouseWorking:
+ break;
+ }
+ }
+ else
+ {
+ km->invalid += ne + km->tested;
+ km->valid = 0;
+ km->tested = 0;
+ km->stage = MouseBroken;
+ }
+ ne = 0;
+ timeout = 0;
+ }
+ else
+ timeout = MOUSE_TIMEOUT;
+ }
+ }
+}
+
+int MouseInputType;
+
+char *kdefaultMouse[] = {
+ "/dev/input/mice",
+ "/dev/mouse",
+ "/dev/psaux",
+ "/dev/adbmouse",
+ "/dev/ttyS0",
+ "/dev/ttyS1",
+};
+
+#define NUM_DEFAULT_MOUSE (sizeof (kdefaultMouse) / sizeof (kdefaultMouse[0]))
+
+static Status
+MouseInit (KdPointerInfo *pi)
+{
+ int i;
+ int fd;
+ Kmouse *km;
+
+ if (!pi)
+ return BadImplementation;
+
+ if (!pi->path || strcmp(pi->path, "auto") == 0) {
+ for (i = 0; i < NUM_DEFAULT_MOUSE; i++) {
+ fd = open (kdefaultMouse[i], 2);
+ if (fd >= 0) {
+ pi->path = KdSaveString (kdefaultMouse[i]);
+ break;
+ }
+ }
+ }
+ else {
+ fd = open (pi->path, 2);
+ }
+
+ if (fd < 0)
+ return BadMatch;
+
+ close(fd);
+
+ km = (Kmouse *) xalloc (sizeof (Kmouse));
+ if (km) {
+ km->iob.avail = km->iob.used = 0;
+ MouseFirstProtocol(km, "exps/2");
+ km->i_prot = 0;
+ km->tty = isatty (fd);
+ km->iob.fd = -1;
+ pi->driverPrivate = km;
+ }
+ else {
+ close (fd);
+ return BadAlloc;
+ }
+
+ return Success;
+}
+
+static Status
+MouseEnable (KdPointerInfo *pi)
+{
+ Kmouse *km;
+
+ if (!pi || !pi->driverPrivate || !pi->path)
+ return BadImplementation;
+
+ km = pi->driverPrivate;
+
+ km->iob.fd = open(pi->path, 2);
+ if (km->iob.fd < 0)
+ return BadMatch;
+
+ if (!KdRegisterFd (km->iob.fd, MouseRead, pi))
+ {
+ close(km->iob.fd);
+ return BadAlloc;
+ }
+
+ return Success;
+}
+
+static void
+MouseDisable (KdPointerInfo *pi)
+{
+ Kmouse *km;
+ if (!pi || !pi->driverPrivate)
+ return;
+
+ km = pi->driverPrivate;
+ KdUnregisterFd (pi, km->iob.fd, TRUE);
+}
+
+static void
+MouseFini (KdPointerInfo *pi)
+{
+ xfree (pi->driverPrivate);
+ pi->driverPrivate = NULL;
+}
+
+KdPointerDriver LinuxMouseDriver = {
+ "mouse",
+ MouseInit,
+ MouseEnable,
+ MouseDisable,
+ MouseFini,
+ NULL,
+};
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 19:48:25 +0000