From: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
Analogously to the APIC, we will reuse some parts of the user space
i8259 model for KVM. In this case it is the PicState, vmstate
description, a reset core and some init bits.
Signed-off-by: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
---
Makefile.objs | 2 +-
hw/i8259.c | 78 +-------------------------------------
hw/i8259_common.c | 103 +++++++++++++++++++++++++++++++++++++++++++++++++++
hw/i8259_internal.h | 67 +++++++++++++++++++++++++++++++++
4 files changed, 174 insertions(+), 76 deletions(-)
create mode 100644 hw/i8259_common.c
create mode 100644 hw/i8259_internal.h
diff --git a/Makefile.objs b/Makefile.objs
index 01587c8..5372eec 100644
--- a/Makefile.objs
+++ b/Makefile.objs
@@ -220,7 +220,7 @@ hw-obj-$(CONFIG_APPLESMC) += applesmc.o
hw-obj-$(CONFIG_SMARTCARD) += usb-ccid.o ccid-card-passthru.o
hw-obj-$(CONFIG_SMARTCARD_NSS) += ccid-card-emulated.o
hw-obj-$(CONFIG_USB_REDIR) += usb-redir.o
-hw-obj-$(CONFIG_I8259) += i8259.o
+hw-obj-$(CONFIG_I8259) += i8259_common.o i8259.o
# PPC devices
hw-obj-$(CONFIG_PREP_PCI) += prep_pci.o
diff --git a/hw/i8259.c b/hw/i8259.c
index ab519de..e8a6a9a 100644
--- a/hw/i8259.c
+++ b/hw/i8259.c
@@ -26,6 +26,7 @@
#include "isa.h"
#include "monitor.h"
#include "qemu-timer.h"
+#include "i8259_internal.h"
/* debug PIC */
//#define DEBUG_PIC
@@ -40,33 +41,6 @@
//#define DEBUG_IRQ_LATENCY
//#define DEBUG_IRQ_COUNT
-struct PicState {
- ISADevice dev;
- uint8_t last_irr; /* edge detection */
- uint8_t irr; /* interrupt request register */
- uint8_t imr; /* interrupt mask register */
- uint8_t isr; /* interrupt service register */
- uint8_t priority_add; /* highest irq priority */
- uint8_t irq_base;
- uint8_t read_reg_select;
- uint8_t poll;
- uint8_t special_mask;
- uint8_t init_state;
- uint8_t auto_eoi;
- uint8_t rotate_on_auto_eoi;
- uint8_t special_fully_nested_mode;
- uint8_t init4; /* true if 4 byte init */
- uint8_t single_mode; /* true if slave pic is not initialized */
- uint8_t elcr; /* PIIX edge/trigger selection*/
- uint8_t elcr_mask;
- qemu_irq int_out[1];
- uint32_t master; /* reflects /SP input pin */
- uint32_t iobase;
- uint32_t elcr_addr;
- MemoryRegion base_io;
- MemoryRegion elcr_io;
-};
-
#if defined(DEBUG_PIC) || defined(DEBUG_IRQ_COUNT)
static int irq_level[16];
#endif
@@ -248,22 +222,7 @@ int pic_read_irq(PicState *s)
static void pic_init_reset(PicState *s)
{
- s->last_irr = 0;
- s->irr = 0;
- s->imr = 0;
- s->isr = 0;
- s->priority_add = 0;
- s->irq_base = 0;
- s->read_reg_select = 0;
- s->poll = 0;
- s->special_mask = 0;
- s->init_state = 0;
- s->auto_eoi = 0;
- s->rotate_on_auto_eoi = 0;
- s->special_fully_nested_mode = 0;
- s->init4 = 0;
- s->single_mode = 0;
- /* Note: ELCR is not reset */
+ pic_reset_internal(s);
pic_update_irq(s);
}
@@ -418,32 +377,6 @@ static uint64_t elcr_ioport_read(void *opaque, target_phys_addr_t addr,
return s->elcr;
}
-static const VMStateDescription vmstate_pic = {
- .name = "i8259",
- .version_id = 1,
- .minimum_version_id = 1,
- .minimum_version_id_old = 1,
- .fields = (VMStateField[]) {
- VMSTATE_UINT8(last_irr, PicState),
- VMSTATE_UINT8(irr, PicState),
- VMSTATE_UINT8(imr, PicState),
- VMSTATE_UINT8(isr, PicState),
- VMSTATE_UINT8(priority_add, PicState),
- VMSTATE_UINT8(irq_base, PicState),
- VMSTATE_UINT8(read_reg_select, PicState),
- VMSTATE_UINT8(poll, PicState),
- VMSTATE_UINT8(special_mask, PicState),
- VMSTATE_UINT8(init_state, PicState),
- VMSTATE_UINT8(auto_eoi, PicState),
- VMSTATE_UINT8(rotate_on_auto_eoi, PicState),
- VMSTATE_UINT8(special_fully_nested_mode, PicState),
- VMSTATE_UINT8(init4, PicState),
- VMSTATE_UINT8(single_mode, PicState),
- VMSTATE_UINT8(elcr, PicState),
- VMSTATE_END_OF_LIST()
- }
-};
-
static const MemoryRegionOps pic_base_ioport_ops = {
.read = pic_ioport_read,
.write = pic_ioport_write,
@@ -469,16 +402,11 @@ static int pic_initfn(ISADevice *dev)
memory_region_init_io(&s->base_io, &pic_base_ioport_ops, s, "pic", 2);
memory_region_init_io(&s->elcr_io, &pic_elcr_ioport_ops, s, "elcr", 1);
- isa_register_ioport(NULL, &s->base_io, s->iobase);
- if (s->elcr_addr != -1) {
- isa_register_ioport(NULL, &s->elcr_io, s->elcr_addr);
- }
+ pic_init_common(s);
qdev_init_gpio_out(&dev->qdev, s->int_out, ARRAY_SIZE(s->int_out));
qdev_init_gpio_in(&dev->qdev, pic_set_irq, 8);
- qdev_set_legacy_instance_id(&dev->qdev, s->iobase, 1);
-
return 0;
}
diff --git a/hw/i8259_common.c b/hw/i8259_common.c
new file mode 100644
index 0000000..9d2fbc3
--- /dev/null
+++ b/hw/i8259_common.c
@@ -0,0 +1,103 @@
+/*
+ * QEMU 8259 - common bits of emulated and KVM kernel model
+ *
+ * Copyright (c) 2003-2004 Fabrice Bellard
+ * Copyright (c) 2011 Jan Kiszka, Siemens AG
+ *
+ * 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 "pc.h"
+#include "i8259_internal.h"
+
+void pic_reset_internal(PicState *s)
+{
+ s->last_irr = 0;
+ s->irr = 0;
+ s->imr = 0;
+ s->isr = 0;
+ s->priority_add = 0;
+ s->irq_base = 0;
+ s->read_reg_select = 0;
+ s->poll = 0;
+ s->special_mask = 0;
+ s->init_state = 0;
+ s->auto_eoi = 0;
+ s->rotate_on_auto_eoi = 0;
+ s->special_fully_nested_mode = 0;
+ s->init4 = 0;
+ s->single_mode = 0;
+ /* Note: ELCR is not reset */
+}
+
+static void pic_dispatch_pre_save(void *opaque)
+{
+ PicState *s = opaque;
+
+ if (s->pre_save) {
+ s->pre_save(s);
+ }
+}
+
+static int pic_dispatch_post_load(void *opaque, int version_id)
+{
+ PicState *s = opaque;
+
+ if (s->post_load) {
+ s->post_load(s);
+ }
+ return 0;
+}
+
+const VMStateDescription vmstate_pic = {
+ .name = "i8259",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .pre_save = pic_dispatch_pre_save,
+ .post_load = pic_dispatch_post_load,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT8(last_irr, PicState),
+ VMSTATE_UINT8(irr, PicState),
+ VMSTATE_UINT8(imr, PicState),
+ VMSTATE_UINT8(isr, PicState),
+ VMSTATE_UINT8(priority_add, PicState),
+ VMSTATE_UINT8(irq_base, PicState),
+ VMSTATE_UINT8(read_reg_select, PicState),
+ VMSTATE_UINT8(poll, PicState),
+ VMSTATE_UINT8(special_mask, PicState),
+ VMSTATE_UINT8(init_state, PicState),
+ VMSTATE_UINT8(auto_eoi, PicState),
+ VMSTATE_UINT8(rotate_on_auto_eoi, PicState),
+ VMSTATE_UINT8(special_fully_nested_mode, PicState),
+ VMSTATE_UINT8(init4, PicState),
+ VMSTATE_UINT8(single_mode, PicState),
+ VMSTATE_UINT8(elcr, PicState),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+void pic_init_common(PicState *s)
+{
+ isa_register_ioport(NULL, &s->base_io, s->iobase);
+ if (s->elcr_addr != -1) {
+ isa_register_ioport(NULL, &s->elcr_io, s->elcr_addr);
+ }
+
+ qdev_set_legacy_instance_id(&s->dev.qdev, s->iobase, 1);
+}
diff --git a/hw/i8259_internal.h b/hw/i8259_internal.h
new file mode 100644
index 0000000..49e8bbd
--- /dev/null
+++ b/hw/i8259_internal.h
@@ -0,0 +1,67 @@
+/*
+ * QEMU 8259 - internal interfaces
+ *
+ * Copyright (c) 2011 Jan Kiszka, Siemens AG
+ *
+ * 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.
+ */
+
+#ifndef QEMU_I8259_INTERNAL_H
+#define QEMU_I8259_INTERNAL_H
+
+#include "hw.h"
+#include "pc.h"
+#include "isa.h"
+
+struct PicState {
+ ISADevice dev;
+ uint8_t last_irr; /* edge detection */
+ uint8_t irr; /* interrupt request register */
+ uint8_t imr; /* interrupt mask register */
+ uint8_t isr; /* interrupt service register */
+ uint8_t priority_add; /* highest irq priority */
+ uint8_t irq_base;
+ uint8_t read_reg_select;
+ uint8_t poll;
+ uint8_t special_mask;
+ uint8_t init_state;
+ uint8_t auto_eoi;
+ uint8_t rotate_on_auto_eoi;
+ uint8_t special_fully_nested_mode;
+ uint8_t init4; /* true if 4 byte init */
+ uint8_t single_mode; /* true if slave pic is not initialized */
+ uint8_t elcr; /* PIIX edge/trigger selection*/
+ uint8_t elcr_mask;
+ qemu_irq int_out[1];
+ uint32_t master; /* reflects /SP input pin */
+ uint32_t iobase;
+ uint32_t elcr_addr;
+ MemoryRegion base_io;
+ MemoryRegion elcr_io;
+
+ void (*pre_save)(PicState *s);
+ void (*post_load)(PicState *s);
+};
+
+extern const VMStateDescription vmstate_pic;
+
+void pic_init_common(PicState *s);
+void pic_reset_internal(PicState *s);
+
+#endif /* !QEMU_I8259_INTERNAL_H */
--
1.7.3.4
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
