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authorbellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>2005-01-15 12:02:56 +0000
committerbellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>2005-01-15 12:02:56 +0000
commit6508fe59e07b263a8f9afd0f5f13e6240651f42c (patch)
tree64b4fbd1509c38a88e385549617fd36dbe10f495
parente5843bc81619d62e95ac714e0d3b403944cfb978 (diff)
downloadqemu-arm-6508fe59e07b263a8f9afd0f5f13e6240651f42c.tar.gz
PC parallel port support (Mark Jonckheere)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1221 c046a42c-6fe2-441c-8c8c-71466251a162
-rw-r--r--Changelog1
-rw-r--r--Makefile.target2
-rw-r--r--hw/parallel.c188
-rw-r--r--hw/pc.c9
-rw-r--r--vl.c34
-rw-r--r--vl.h11
6 files changed, 244 insertions, 1 deletions
diff --git a/Changelog b/Changelog
index 539e3ec962..c1e5fff7de 100644
--- a/Changelog
+++ b/Changelog
@@ -12,6 +12,7 @@ version 0.6.2:
- initial x86_64 target support
- initial APIC support
- MMX/SSE/SSE2/PNI support
+ - PC parallel port support (Mark Jonckheere)
version 0.6.1:
diff --git a/Makefile.target b/Makefile.target
index 942a105ea6..6c49acfb24 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -316,7 +316,7 @@ ifeq ($(TARGET_BASE_ARCH), i386)
# Hardware support
VL_OBJS+= ide.o ne2000.o pckbd.o vga.o $(SOUND_HW) dma.o $(AUDIODRV)
VL_OBJS+= fdc.o mc146818rtc.o serial.o i8259.o i8254.o pc.o
-VL_OBJS+= cirrus_vga.o mixeng.o apic.o
+VL_OBJS+= cirrus_vga.o mixeng.o apic.o parallel.o
endif
ifeq ($(TARGET_ARCH), ppc)
VL_OBJS+= ppc.o ide.o ne2000.o pckbd.o vga.o $(SOUND_HW) dma.o $(AUDIODRV)
diff --git a/hw/parallel.c b/hw/parallel.c
new file mode 100644
index 0000000000..1b9fe7cef5
--- /dev/null
+++ b/hw/parallel.c
@@ -0,0 +1,188 @@
+/*
+ * QEMU Parallel PORT emulation
+ *
+ * Copyright (c) 2003-2004 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"
+
+//#define DEBUG_PARALLEL
+
+/*
+ * These are the definitions for the Printer Status Register
+ */
+#define PARA_STS_BUSY 0x80 /* Busy complement */
+#define PARA_STS_ACK 0x40 /* Acknowledge */
+#define PARA_STS_PAPER 0x20 /* Out of paper */
+#define PARA_STS_ONLINE 0x10 /* Online */
+#define PARA_STS_ERROR 0x08 /* Error complement */
+
+/*
+ * These are the definitions for the Printer Control Register
+ */
+#define PARA_CTR_INTEN 0x10 /* IRQ Enable */
+#define PARA_CTR_SELECT 0x08 /* Select In complement */
+#define PARA_CTR_INIT 0x04 /* Initialize Printer complement */
+#define PARA_CTR_AUTOLF 0x02 /* Auto linefeed complement */
+#define PARA_CTR_STROBE 0x01 /* Strobe complement */
+
+struct ParallelState {
+ uint8_t data;
+ uint8_t status; /* read only register */
+ uint8_t control;
+ int irq;
+ int irq_pending;
+ CharDriverState *chr;
+};
+
+static void parallel_update_irq(ParallelState *s)
+{
+ if (s->irq_pending)
+ pic_set_irq(s->irq, 1);
+ else
+ pic_set_irq(s->irq, 0);
+}
+
+static void parallel_ioport_write(void *opaque, uint32_t addr, uint32_t val)
+{
+ ParallelState *s = opaque;
+
+ addr &= 7;
+#ifdef DEBUG_PARALLEL
+ printf("parallel: write addr=0x%02x val=0x%02x\n", addr, val);
+#endif
+ switch(addr) {
+ case 0:
+ s->data = val;
+ parallel_update_irq(s);
+ break;
+ case 2:
+ if ((val & PARA_CTR_INIT) == 0 ) {
+ s->status = PARA_STS_BUSY;
+ s->status |= PARA_STS_ACK;
+ s->status |= PARA_STS_ONLINE;
+ s->status |= PARA_STS_ERROR;
+ }
+ else if (val & PARA_CTR_SELECT) {
+ if (val & PARA_CTR_STROBE) {
+ s->status &= ~PARA_STS_BUSY;
+ if ((s->control & PARA_CTR_STROBE) == 0)
+ qemu_chr_write(s->chr, &s->data, 1);
+ } else {
+ if (s->control & PARA_CTR_INTEN) {
+ s->irq_pending = 1;
+ }
+ }
+ }
+ parallel_update_irq(s);
+ s->control = val;
+ break;
+ }
+}
+
+static uint32_t parallel_ioport_read(void *opaque, uint32_t addr)
+{
+ ParallelState *s = opaque;
+ uint32_t ret = 0xff;
+
+ addr &= 7;
+ switch(addr) {
+ case 0:
+ ret = s->data;
+ break;
+ case 1:
+ ret = s->status;
+ s->irq_pending = 0;
+ if ((s->status & PARA_STS_BUSY) == 0 && (s->control & PARA_CTR_STROBE) == 0) {
+ /* XXX Fixme: wait 5 microseconds */
+ if (s->status & PARA_STS_ACK)
+ s->status &= ~PARA_STS_ACK;
+ else {
+ /* XXX Fixme: wait 5 microseconds */
+ s->status |= PARA_STS_ACK;
+ s->status |= PARA_STS_BUSY;
+ }
+ }
+ parallel_update_irq(s);
+ break;
+ case 2:
+ ret = s->control;
+ break;
+ }
+#ifdef DEBUG_PARALLEL
+ printf("parallel: read addr=0x%02x val=0x%02x\n", addr, ret);
+#endif
+ return ret;
+}
+
+static int parallel_can_receive(ParallelState *s)
+{
+ return 0;
+}
+
+static void parallel_receive_byte(ParallelState *s, int ch)
+{
+}
+
+static void parallel_receive_break(ParallelState *s)
+{
+}
+
+static int parallel_can_receive1(void *opaque)
+{
+ ParallelState *s = opaque;
+ return parallel_can_receive(s);
+}
+
+static void parallel_receive1(void *opaque, const uint8_t *buf, int size)
+{
+ ParallelState *s = opaque;
+ parallel_receive_byte(s, buf[0]);
+}
+
+static void parallel_event(void *opaque, int event)
+{
+ ParallelState *s = opaque;
+}
+
+/* If fd is zero, it means that the parallel device uses the console */
+ParallelState *parallel_init(int base, int irq, CharDriverState *chr)
+{
+ ParallelState *s;
+
+ s = qemu_mallocz(sizeof(ParallelState));
+ if (!s)
+ return NULL;
+ s->irq = irq;
+ s->data = 0;
+ s->status = PARA_STS_BUSY;
+ s->status |= PARA_STS_ACK;
+ s->status |= PARA_STS_ONLINE;
+ s->status |= PARA_STS_ERROR;
+ s->control = PARA_CTR_SELECT;
+ s->control |= PARA_CTR_INIT;
+
+ register_ioport_write(base, 8, 1, parallel_ioport_write, s);
+ register_ioport_read(base, 8, 1, parallel_ioport_read, s);
+ s->chr = chr;
+ qemu_chr_add_read_handler(chr, parallel_can_receive1, parallel_receive1, s);
+ qemu_chr_add_event_handler(chr, parallel_event);
+ return s;
+}
diff --git a/hw/pc.c b/hw/pc.c
index 7b6c8946fa..5deb445a3c 100644
--- a/hw/pc.c
+++ b/hw/pc.c
@@ -376,6 +376,9 @@ static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
static int serial_io[MAX_SERIAL_PORTS] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 };
static int serial_irq[MAX_SERIAL_PORTS] = { 4, 3, 4, 3 };
+static int parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc };
+static int parallel_irq[MAX_PARALLEL_PORTS] = { 7, 7, 7 };
+
/* PC hardware initialisation */
void pc_init(int ram_size, int vga_ram_size, int boot_device,
DisplayState *ds, const char **fd_filename, int snapshot,
@@ -538,6 +541,12 @@ void pc_init(int ram_size, int vga_ram_size, int boot_device,
}
}
+ for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
+ if (parallel_hds[i]) {
+ parallel_init(parallel_io[i], parallel_irq[i], parallel_hds[i]);
+ }
+ }
+
if (pci_enabled) {
for(i = 0; i < nb_nics; i++) {
pci_ne2000_init(pci_bus, &nd_table[i]);
diff --git a/vl.c b/vl.c
index f478f9b23b..468032fb5f 100644
--- a/vl.c
+++ b/vl.c
@@ -136,6 +136,7 @@ int graphic_depth = 15;
int full_screen = 0;
TextConsole *vga_console;
CharDriverState *serial_hds[MAX_SERIAL_PORTS];
+CharDriverState *parallel_hds[MAX_PARALLEL_PORTS];
/***********************************************************/
/* x86 ISA bus support */
@@ -2750,6 +2751,7 @@ void help(void)
"Debug/Expert options:\n"
"-monitor dev redirect the monitor to char device 'dev'\n"
"-serial dev redirect the serial port to char device 'dev'\n"
+ "-parallel dev redirect the parallel port to char device 'dev'\n"
"-pidfile file Write PID to 'file'\n"
"-S freeze CPU at startup (use 'c' to start execution)\n"
"-s wait gdb connection to port %d\n"
@@ -2842,6 +2844,7 @@ enum {
QEMU_OPTION_std_vga,
QEMU_OPTION_monitor,
QEMU_OPTION_serial,
+ QEMU_OPTION_parallel,
QEMU_OPTION_loadvm,
QEMU_OPTION_full_screen,
QEMU_OPTION_pidfile,
@@ -2904,6 +2907,7 @@ const QEMUOption qemu_options[] = {
{ "std-vga", 0, QEMU_OPTION_std_vga },
{ "monitor", 1, QEMU_OPTION_monitor },
{ "serial", 1, QEMU_OPTION_serial },
+ { "parallel", 1, QEMU_OPTION_parallel },
{ "loadvm", HAS_ARG, QEMU_OPTION_loadvm },
{ "full-screen", 0, QEMU_OPTION_full_screen },
{ "pidfile", HAS_ARG, QEMU_OPTION_pidfile },
@@ -2986,6 +2990,8 @@ int main(int argc, char **argv)
char monitor_device[128];
char serial_devices[MAX_SERIAL_PORTS][128];
int serial_device_index;
+ char parallel_devices[MAX_PARALLEL_PORTS][128];
+ int parallel_device_index;
const char *loadvm = NULL;
#if !defined(CONFIG_SOFTMMU)
@@ -3019,6 +3025,11 @@ int main(int argc, char **argv)
serial_devices[i][0] = '\0';
serial_device_index = 0;
+ pstrcpy(parallel_devices[0], sizeof(parallel_devices[0]), "vc");
+ for(i = 1; i < MAX_PARALLEL_PORTS; i++)
+ parallel_devices[i][0] = '\0';
+ parallel_device_index = 0;
+
nb_tun_fds = 0;
net_if_type = -1;
nb_nics = 1;
@@ -3115,6 +3126,7 @@ int main(int argc, char **argv)
case QEMU_OPTION_nographic:
pstrcpy(monitor_device, sizeof(monitor_device), "stdio");
pstrcpy(serial_devices[0], sizeof(serial_devices[0]), "stdio");
+ pstrcpy(parallel_devices[0], sizeof(parallel_devices[0]), "stdio");
nographic = 1;
break;
case QEMU_OPTION_kernel:
@@ -3329,6 +3341,15 @@ int main(int argc, char **argv)
sizeof(serial_devices[0]), optarg);
serial_device_index++;
break;
+ case QEMU_OPTION_parallel:
+ if (parallel_device_index >= MAX_PARALLEL_PORTS) {
+ fprintf(stderr, "qemu: too many parallel ports\n");
+ exit(1);
+ }
+ pstrcpy(parallel_devices[parallel_device_index],
+ sizeof(parallel_devices[0]), optarg);
+ parallel_device_index++;
+ break;
case QEMU_OPTION_loadvm:
loadvm = optarg;
break;
@@ -3552,6 +3573,19 @@ int main(int argc, char **argv)
}
}
+ for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
+ if (parallel_devices[i][0] != '\0') {
+ parallel_hds[i] = qemu_chr_open(parallel_devices[i]);
+ if (!parallel_hds[i]) {
+ fprintf(stderr, "qemu: could not open parallel device '%s'\n",
+ parallel_devices[i]);
+ exit(1);
+ }
+ if (!strcmp(parallel_devices[i], "vc"))
+ qemu_chr_printf(parallel_hds[i], "parallel%d console\n", i);
+ }
+ }
+
/* setup cpu signal handlers for MMU / self modifying code handling */
#if !defined(CONFIG_SOFTMMU)
diff --git a/vl.h b/vl.h
index a80d9057b3..39ea6550b0 100644
--- a/vl.h
+++ b/vl.h
@@ -224,6 +224,12 @@ void console_select(unsigned int index);
extern CharDriverState *serial_hds[MAX_SERIAL_PORTS];
+/* parallel ports */
+
+#define MAX_PARALLEL_PORTS 3
+
+extern CharDriverState *parallel_hds[MAX_PARALLEL_PORTS];
+
/* network redirectors support */
#define MAX_NICS 8
@@ -632,6 +638,11 @@ void rtc_set_date(RTCState *s, const struct tm *tm);
typedef struct SerialState SerialState;
SerialState *serial_init(int base, int irq, CharDriverState *chr);
+/* parallel.c */
+
+typedef struct ParallelState ParallelState;
+ParallelState *parallel_init(int base, int irq, CharDriverState *chr);
+
/* i8259.c */
void pic_set_irq(int irq, int level);