Qemu-0.8.0-openstep-busmouse-2.diff
From Computer History Wiki
This diff adds busmouse support to Qemu 0.8.0
Caveat
There may be some wordwrap issues as I just copied this out of a terminal... But this diff is too important to lose!
Credit
Full credit goes to Michael Engel who uploaded this diff onto the Qemu-devel list
Dr. rer. nat. Michael Engel - [EMAIL PROTECTED] University of Marburg - Dept. of Mathematics and Computer Science Hans-Meerwein-Str. - D-35032 Marburg, Germany Phone: +49 6421 / 28 21562 - Fax: +49 6421 / 28 21573
diff
diff -urN qemu-0.8.0/Makefile.target qemu-0.8.0-openstep/Makefile.target
--- qemu-0.8.0/Makefile.target 2005-12-19 23:51:53.000000000 +0100
+++ qemu-0.8.0-openstep/Makefile.target 2005-12-30 20:19:21.000000000 +0100
@@ -308,7 +308,7 @@
# Hardware support
VL_OBJS+= ide.o ne2000.o pckbd.o ps2.o vga.o $(SOUND_HW) dma.o $(AUDIODRV)
VL_OBJS+= fdc.o mc146818rtc.o serial.o i8259.o i8254.o pc.o
-VL_OBJS+= cirrus_vga.o mixeng.o apic.o parallel.o
+VL_OBJS+= cirrus_vga.o mixeng.o apic.o parallel.o busmouse.o
DEFINES += -DHAS_AUDIO
endif
ifeq ($(TARGET_BASE_ARCH), ppc)
diff -urN qemu-0.8.0/hw/busmouse.c qemu-0.8.0-openstep/hw/busmouse.c
--- qemu-0.8.0/hw/busmouse.c 1970-01-01 01:00:00.000000000 +0100
+++ qemu-0.8.0-openstep/hw/busmouse.c 2006-01-01 19:33:33.000000000 +0100
@@ -0,0 +1,160 @@
+/*
+ * QEMU Busmouse emulation
+ *
+ * Copyright (c) 2005 Michael Engel (engel-at-informatik.uni-marburg.de)
+ * using hints from parallel.c and ps2.c
+ *
+ * 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"
+
+/*
+ * These are the definitions for the busmouse controller registers
+ * and internal state
+ */
+
+struct BusmouseState {
+ uint8_t data;
+ uint8_t signature;
+ uint8_t control;
+ uint8_t interrupt;
+ uint8_t config;
+ uint8_t command;
+ int irq;
+ int irq_pending;
+ CharDriverState *chr;
+ int hw_driver;
+ uint16_t mouse_dx;
+ uint16_t mouse_dy;
+ uint16_t mouse_dz;
+ uint16_t mouse_buttons;
+};
+
+static void busmouse_update_irq(BusmouseState *s);
+
+static void busmouse_event(void *opaque,
+ int dx, int dy, int dz, int buttons_state)
+{
+ BusmouseState *s = opaque;
+
+ 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;
+
+ s->irq_pending = 1;
+ busmouse_update_irq(s);
+}
+
+static void busmouse_update_irq(BusmouseState *s)
+{
+ if (s->irq_pending)
+ pic_set_irq(s->irq, 1);
+ else
+ pic_set_irq(s->irq, 0);
+}
+
+static void busmouse_ioport_write(void *opaque, uint32_t addr, uint32_t val)
+{
+ BusmouseState *s = opaque;
+
+ addr &= 0xf;
+ switch(addr) {
+ case 0xc: /* data port */
+ break;
+ case 0xd: /* signature port */
+ break;
+ case 0xe: /* control/interrupt port */
+ s->command = val;
+ break;
+ case 0xf: /* config port */
+ break;
+ }
+}
+
+static uint32_t busmouse_ioport_read(void *opaque, uint32_t addr)
+{
+ BusmouseState *s = opaque;
+ uint32_t ret = 0x00;
+ static int interrupt_val = 0x01;
+
+ addr &= 0xf;
+ switch(addr) {
+ case 0xc: /* data port */
+ s->irq_pending = 0;
+ switch (s->command) {
+ case 0x00: /* no op? */
+ break;
+ case 0x80: /* x low */
+ ret = s->mouse_dx & 0xf;
+ ret += (7 - s->mouse_buttons) << 5; /* button state */
+ break;
+ case 0xa0: /* x high */
+ ret = (s->mouse_dx >> 4) & 0xf;
+ s->mouse_dx = 0;
+ break;
+ case 0xc0: /* y low */
+ ret = s->mouse_dy & 0xf;
+ break;
+ case 0xe0: /* y high */
+ ret = (s->mouse_dy >> 4) & 0xf;
+ s->mouse_dy = 0;
+ break;
+ }
+ busmouse_update_irq(s);
+ break;
+ case 0xd: /* signature port */
+ ret = 0xa5; /* return signature byte */
+ busmouse_update_irq(s);
+ break;
+ case 0xe: /* control/interrupt port */
+ ret = interrupt_val;
+ interrupt_val = (interrupt_val << 1) & 0xff;
+ if (interrupt_val == 0) interrupt_val = 1;
+
+ break;
+ case 0xf: /* config port */
+ break;
+ }
+ return ret;
+}
+
+/* If fd is zero, it means that the busmouse device uses the console */
+BusmouseState *busmouse_init(int base, int irq, CharDriverState *chr)
+{
+ BusmouseState *s;
+
+ s = qemu_mallocz(sizeof(BusmouseState));
+ if (!s)
+ return NULL;
+ s->chr = chr;
+ s->hw_driver = 0;
+ s->irq = irq;
+ s->data = 0;
+ s->mouse_buttons = 0x0;
+ register_ioport_write(base, 8, 1, busmouse_ioport_write, s);
+ register_ioport_read(base, 8, 1, busmouse_ioport_read, s);
+ qemu_add_mouse_event_handler(busmouse_event, s);
+
+ return s;
+}
diff -urN qemu-0.8.0/hw/pc.c qemu-0.8.0-openstep/hw/pc.c
--- qemu-0.8.0/hw/pc.c 2005-12-19 23:51:53.000000000 +0100
+++ qemu-0.8.0-openstep/hw/pc.c 2006-01-01 18:22:58.000000000 +0100
@@ -574,6 +574,9 @@
static int parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc };
static int parallel_irq[MAX_PARALLEL_PORTS] = { 7, 7, 7 };
+static int busmouse_io[MAX_BUSMOUSE_PORTS] = { 0x238 };
+static int busmouse_irq[MAX_BUSMOUSE_PORTS] = { 5 };
+
#ifdef HAS_AUDIO
static void audio_init (PCIBus *pci_bus)
{
@@ -800,6 +803,10 @@
}
}
+ for(i = 0; i < 1; i++) {
+ busmouse_init(busmouse_io[i], busmouse_irq[i], 0);
+ }
+
if (pci_enabled) {
for(i = 0; i < nb_nics; i++) {
pci_ne2000_init(pci_bus, &nd_table[i]);
diff -urN qemu-0.8.0/hw/ps2.c qemu-0.8.0-openstep/hw/ps2.c
--- qemu-0.8.0/hw/ps2.c 2005-12-19 23:51:53.000000000 +0100
+++ qemu-0.8.0-openstep/hw/ps2.c 2006-01-01 18:25:49.000000000 +0100
@@ -506,7 +506,9 @@
s->common.update_arg = update_arg;
ps2_reset(&s->common);
register_savevm("ps2mouse", 0, 1, ps2_mouse_save, ps2_mouse_load, s);
- qemu_add_mouse_event_handler(ps2_mouse_event, s);
+
+ /* disabled for busmouse emulation (req'd for running OpenStep) */
+ /* qemu_add_mouse_event_handler(ps2_mouse_event, s); */
qemu_register_reset(ps2_reset, &s->common);
return s;
}
diff -urN qemu-0.8.0/vl.h qemu-0.8.0-openstep/vl.h
--- qemu-0.8.0/vl.h 2005-12-19 23:51:53.000000000 +0100
+++ qemu-0.8.0-openstep/vl.h 2006-01-01 18:14:28.000000000 +0100
@@ -271,6 +271,10 @@
#define MAX_PARALLEL_PORTS 3
+/* busmouse ports */
+
+#define MAX_BUSMOUSE_PORTS 1
+
extern CharDriverState *parallel_hds[MAX_PARALLEL_PORTS];
/* VLANs support */
@@ -755,6 +759,11 @@
typedef struct ParallelState ParallelState;
ParallelState *parallel_init(int base, int irq, CharDriverState *chr);
+/* busmouse.c */
+
+typedef struct BusmouseState BusmouseState;
+BusmouseState *busmouse_init(int base, int irq, CharDriverState *chr);
+
/* i8259.c */
typedef struct PicState2 PicState2;
