From e11d64390ba076d8a293e422dad3027f9adb9430 Mon Sep 17 00:00:00 2001
From: Richard Henderson <rth@twiddle.net>
Date: Wed, 10 Aug 2011 15:28:10 -0700
Subject: [PATCH 01/14] pci: add pci_address_space_io()
Returns the I/O address space. Useful for implementing
PCI-ISA bridge devices.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Avi Kivity <avi@redhat.com>
---
hw/pci.c | 5 +++++
hw/pci.h | 1 +
2 files changed, 6 insertions(+)
diff --git a/hw/pci.c b/hw/pci.c
index 5c4f071d28..749e8d86ca 100644
--- a/hw/pci.c
+++ b/hw/pci.c
@@ -2124,3 +2124,8 @@ MemoryRegion *pci_address_space(PCIDevice *dev)
{
return dev->bus->address_space_mem;
}
+
+MemoryRegion *pci_address_space_io(PCIDevice *dev)
+{
+ return dev->bus->address_space_io;
+}
diff --git a/hw/pci.h b/hw/pci.h
index 7b62df16fb..86a81c8273 100644
--- a/hw/pci.h
+++ b/hw/pci.h
@@ -218,6 +218,7 @@ void pci_default_write_config(PCIDevice *d,
void pci_device_save(PCIDevice *s, QEMUFile *f);
int pci_device_load(PCIDevice *s, QEMUFile *f);
MemoryRegion *pci_address_space(PCIDevice *dev);
+MemoryRegion *pci_address_space_io(PCIDevice *dev);
typedef void (*pci_set_irq_fn)(void *opaque, int irq_num, int level);
typedef int (*pci_map_irq_fn)(PCIDevice *pci_dev, int irq_num);
From c2d0d01202e07f87bf17ec9a9f43232c982aa1c2 Mon Sep 17 00:00:00 2001
From: Richard Henderson <rth@twiddle.net>
Date: Wed, 10 Aug 2011 15:28:11 -0700
Subject: [PATCH 02/14] isa: Pass i/o address space to isa_bus_new
Not used yet, but at least we're provided with the correct region.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Avi Kivity <avi@redhat.com>
---
hw/isa-bus.c | 4 +++-
hw/isa.h | 2 +-
hw/mips_jazz.c | 17 ++++++++++-------
hw/mips_r4k.c | 2 +-
hw/pc_piix.c | 2 +-
hw/piix4.c | 2 +-
hw/piix_pci.c | 2 +-
hw/ppc_prep.c | 2 +-
hw/sun4u.c | 2 +-
hw/vt82c686.c | 2 +-
10 files changed, 21 insertions(+), 16 deletions(-)
diff --git a/hw/isa-bus.c b/hw/isa-bus.c
index 1cb497f5ca..d06750589b 100644
--- a/hw/isa-bus.c
+++ b/hw/isa-bus.c
@@ -24,6 +24,7 @@
struct ISABus {
BusState qbus;
+ MemoryRegion *address_space_io;
qemu_irq *irqs;
};
static ISABus *isabus;
@@ -39,7 +40,7 @@ static struct BusInfo isa_bus_info = {
.get_fw_dev_path = isabus_get_fw_dev_path,
};
-ISABus *isa_bus_new(DeviceState *dev)
+ISABus *isa_bus_new(DeviceState *dev, MemoryRegion *address_space_io)
{
if (isabus) {
fprintf(stderr, "Can't create a second ISA bus\n");
@@ -51,6 +52,7 @@ ISABus *isa_bus_new(DeviceState *dev)
}
isabus = FROM_QBUS(ISABus, qbus_create(&isa_bus_info, dev, NULL));
+ isabus->address_space_io = address_space_io;
return isabus;
}
diff --git a/hw/isa.h b/hw/isa.h
index f344699722..390e2d4673 100644
--- a/hw/isa.h
+++ b/hw/isa.h
@@ -25,7 +25,7 @@ struct ISADeviceInfo {
isa_qdev_initfn init;
};
-ISABus *isa_bus_new(DeviceState *dev);
+ISABus *isa_bus_new(DeviceState *dev, MemoryRegion *address_space_io);
void isa_bus_irqs(qemu_irq *irqs);
qemu_irq isa_get_irq(int isairq);
void isa_init_irq(ISADevice *dev, qemu_irq *p, int isairq);
diff --git a/hw/mips_jazz.c b/hw/mips_jazz.c
index 7cac5da920..e1ac1472a2 100644
--- a/hw/mips_jazz.c
+++ b/hw/mips_jazz.c
@@ -102,10 +102,11 @@ static void cpu_request_exit(void *opaque, int irq, int level)
}
}
-static
-void mips_jazz_init (MemoryRegion *address_space, ram_addr_t ram_size,
- const char *cpu_model,
- enum jazz_model_e jazz_model)
+static void mips_jazz_init(MemoryRegion *address_space,
+ MemoryRegion *address_space_io,
+ ram_addr_t ram_size,
+ const char *cpu_model,
+ enum jazz_model_e jazz_model)
{
char *filename;
int bios_size, n;
@@ -181,7 +182,7 @@ void mips_jazz_init (MemoryRegion *address_space, ram_addr_t ram_size,
/* ISA devices */
i8259 = i8259_init(env->irq[4]);
- isa_bus_new(NULL);
+ isa_bus_new(NULL, address_space_io);
isa_bus_irqs(i8259);
cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1);
DMA_init(0, cpu_exit_irq);
@@ -299,7 +300,8 @@ void mips_magnum_init (ram_addr_t ram_size,
const char *kernel_filename, const char *kernel_cmdline,
const char *initrd_filename, const char *cpu_model)
{
- mips_jazz_init(get_system_memory(), ram_size, cpu_model, JAZZ_MAGNUM);
+ mips_jazz_init(get_system_memory(), get_system_io(),
+ ram_size, cpu_model, JAZZ_MAGNUM);
}
static
@@ -308,7 +310,8 @@ void mips_pica61_init (ram_addr_t ram_size,
const char *kernel_filename, const char *kernel_cmdline,
const char *initrd_filename, const char *cpu_model)
{
- mips_jazz_init(get_system_memory(), ram_size, cpu_model, JAZZ_PICA61);
+ mips_jazz_init(get_system_memory(), get_system_io(),
+ ram_size, cpu_model, JAZZ_PICA61);
}
static QEMUMachine mips_magnum_machine = {
diff --git a/hw/mips_r4k.c b/hw/mips_r4k.c
index 805d02a4eb..a7dc48753a 100644
--- a/hw/mips_r4k.c
+++ b/hw/mips_r4k.c
@@ -257,7 +257,7 @@ void mips_r4k_init (ram_addr_t ram_size,
/* The PIC is attached to the MIPS CPU INT0 pin */
i8259 = i8259_init(env->irq[2]);
- isa_bus_new(NULL);
+ isa_bus_new(NULL, get_system_io());
isa_bus_irqs(i8259);
rtc_init(2000, NULL);
diff --git a/hw/pc_piix.c b/hw/pc_piix.c
index 0144534e82..1056cc79cc 100644
--- a/hw/pc_piix.c
+++ b/hw/pc_piix.c
@@ -156,7 +156,7 @@ static void pc_init1(MemoryRegion *system_memory,
} else {
pci_bus = NULL;
i440fx_state = NULL;
- isa_bus_new(NULL);
+ isa_bus_new(NULL, system_io);
no_hpet = 1;
}
isa_bus_irqs(isa_irq);
diff --git a/hw/piix4.c b/hw/piix4.c
index 9590e7b140..2fd1171328 100644
--- a/hw/piix4.c
+++ b/hw/piix4.c
@@ -87,7 +87,7 @@ static int piix4_initfn(PCIDevice *dev)
{
PIIX4State *d = DO_UPCAST(PIIX4State, dev, dev);
- isa_bus_new(&d->dev.qdev);
+ isa_bus_new(&d->dev.qdev, pci_address_space_io(dev));
piix4_dev = &d->dev;
qemu_register_reset(piix4_reset, d);
return 0;
diff --git a/hw/piix_pci.c b/hw/piix_pci.c
index 8f6ea42e2c..d183443b2f 100644
--- a/hw/piix_pci.c
+++ b/hw/piix_pci.c
@@ -504,7 +504,7 @@ static int piix3_initfn(PCIDevice *dev)
{
PIIX3State *d = DO_UPCAST(PIIX3State, dev, dev);
- isa_bus_new(&d->dev.qdev);
+ isa_bus_new(&d->dev.qdev, pci_address_space_io(dev));
qemu_register_reset(piix3_reset, d);
return 0;
}
diff --git a/hw/ppc_prep.c b/hw/ppc_prep.c
index 515de42da4..f9325bdf2c 100644
--- a/hw/ppc_prep.c
+++ b/hw/ppc_prep.c
@@ -651,7 +651,7 @@ static void ppc_prep_init (ram_addr_t ram_size,
i8259 = i8259_init(first_cpu->irq_inputs[PPC6xx_INPUT_INT]);
pci_bus = pci_prep_init(i8259, get_system_memory(), get_system_io());
/* Hmm, prep has no pci-isa bridge ??? */
- isa_bus_new(NULL);
+ isa_bus_new(NULL, get_system_io());
isa_bus_irqs(i8259);
// pci_bus = i440fx_init();
/* Register 8 MB of ISA IO space (needed for non-contiguous map) */
diff --git a/hw/sun4u.c b/hw/sun4u.c
index 6afb0e7158..fbef350a44 100644
--- a/hw/sun4u.c
+++ b/hw/sun4u.c
@@ -548,7 +548,7 @@ pci_ebus_init1(PCIDevice *pci_dev)
{
EbusState *s = DO_UPCAST(EbusState, pci_dev, pci_dev);
- isa_bus_new(&pci_dev->qdev);
+ isa_bus_new(&pci_dev->qdev, pci_address_space_io(pci_dev));
pci_dev->config[0x04] = 0x06; // command = bus master, pci mem
pci_dev->config[0x05] = 0x00;
diff --git a/hw/vt82c686.c b/hw/vt82c686.c
index b9fcc0e4ac..284595905d 100644
--- a/hw/vt82c686.c
+++ b/hw/vt82c686.c
@@ -490,7 +490,7 @@ static int vt82c686b_initfn(PCIDevice *d)
uint8_t *wmask;
int i;
- isa_bus_new(&d->qdev);
+ isa_bus_new(&d->qdev, pci_address_space_io(d));
pci_conf = d->config;
pci_config_set_prog_interface(pci_conf, 0x0);
From 78e20593527ce35c5be9d89d686ba9d8e95041b6 Mon Sep 17 00:00:00 2001
From: Richard Henderson <rth@twiddle.net>
Date: Wed, 10 Aug 2011 15:28:12 -0700
Subject: [PATCH 03/14] isa: add isa_register_ioport()
To replace isa_init_ioport and isa_init_ioport_range
as the ISA devices are converted to the memory api.
[avi: use memory_region_size()]
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Avi Kivity <avi@redhat.com>
---
hw/isa-bus.c | 10 ++++++++++
hw/isa.h | 5 ++++-
2 files changed, 14 insertions(+), 1 deletion(-)
diff --git a/hw/isa-bus.c b/hw/isa-bus.c
index d06750589b..6c15a31fe8 100644
--- a/hw/isa-bus.c
+++ b/hw/isa-bus.c
@@ -108,6 +108,16 @@ void isa_init_ioport(ISADevice *dev, uint16_t ioport)
isa_init_ioport_range(dev, ioport, 1);
}
+void isa_register_ioport(ISADevice *dev, MemoryRegion *io, uint16_t start)
+{
+ memory_region_add_subregion(isabus->address_space_io, start, io);
+ if (dev != NULL) {
+ assert(dev->nio < ARRAY_SIZE(dev->io));
+ dev->io[dev->nio++] = io;
+ isa_init_ioport_range(dev, start, memory_region_size(io));
+ }
+}
+
static int isa_qdev_init(DeviceState *qdev, DeviceInfo *base)
{
ISADevice *dev = DO_UPCAST(ISADevice, qdev, qdev);
diff --git a/hw/isa.h b/hw/isa.h
index 390e2d4673..432d17ab26 100644
--- a/hw/isa.h
+++ b/hw/isa.h
@@ -13,10 +13,12 @@ typedef struct ISADeviceInfo ISADeviceInfo;
struct ISADevice {
DeviceState qdev;
+ MemoryRegion *io[32];
uint32_t isairq[2];
- int nirqs;
uint16_t ioports[32];
+ int nirqs;
int nioports;
+ int nio;
};
typedef int (*isa_qdev_initfn)(ISADevice *dev);
@@ -29,6 +31,7 @@ ISABus *isa_bus_new(DeviceState *dev, MemoryRegion *address_space_io);
void isa_bus_irqs(qemu_irq *irqs);
qemu_irq isa_get_irq(int isairq);
void isa_init_irq(ISADevice *dev, qemu_irq *p, int isairq);
+void isa_register_ioport(ISADevice *dev, MemoryRegion *io, uint16_t start);
void isa_init_ioport(ISADevice *dev, uint16_t ioport);
void isa_init_ioport_range(ISADevice *dev, uint16_t start, uint16_t length);
void isa_qdev_register(ISADeviceInfo *info);
From 4bae1efe63a507b99cad4f8c8b8cf6fa8d203881 Mon Sep 17 00:00:00 2001
From: Richard Henderson <rth@twiddle.net>
Date: Wed, 10 Aug 2011 15:28:13 -0700
Subject: [PATCH 04/14] pc: Re-order pc_init1 to initialize the ISA bus before
ISA devices
In particular, the i8259 was being initialized before the ISA bus,
leading to a crash.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Avi Kivity <avi@redhat.com>
---
hw/pc_piix.c | 22 ++++++++++++----------
1 file changed, 12 insertions(+), 10 deletions(-)
diff --git a/hw/pc_piix.c b/hw/pc_piix.c
index 1056cc79cc..ce1c87fba9 100644
--- a/hw/pc_piix.c
+++ b/hw/pc_piix.c
@@ -130,17 +130,7 @@ static void pc_init1(MemoryRegion *system_memory,
pci_enabled ? rom_memory : system_memory, &ram_memory);
}
- if (!xen_enabled()) {
- cpu_irq = pc_allocate_cpu_irq();
- i8259 = i8259_init(cpu_irq[0]);
- } else {
- i8259 = xen_interrupt_controller_init();
- }
isa_irq_state = g_malloc0(sizeof(*isa_irq_state));
- isa_irq_state->i8259 = i8259;
- if (pci_enabled) {
- ioapic_init(isa_irq_state);
- }
isa_irq = qemu_allocate_irqs(isa_irq_handler, isa_irq_state, 24);
if (pci_enabled) {
@@ -161,6 +151,18 @@ static void pc_init1(MemoryRegion *system_memory,
}
isa_bus_irqs(isa_irq);
+ if (!xen_enabled()) {
+ cpu_irq = pc_allocate_cpu_irq();
+ i8259 = i8259_init(cpu_irq[0]);
+ } else {
+ i8259 = xen_interrupt_controller_init();
+ }
+
+ isa_irq_state->i8259 = i8259;
+ if (pci_enabled) {
+ ioapic_init(isa_irq_state);
+ }
+
pc_register_ferr_irq(isa_get_irq(13));
pc_vga_init(pci_enabled? pci_bus: NULL);
From beae3979451219e8dc288ae7d7a14e8b438cb5fb Mon Sep 17 00:00:00 2001
From: Richard Henderson <rth@twiddle.net>
Date: Wed, 10 Aug 2011 15:28:14 -0700
Subject: [PATCH 05/14] cs4231a: Convert to MemoryRegion
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Avi Kivity <avi@redhat.com>
---
hw/cs4231a.c | 38 +++++++++++++++++++-------------------
1 file changed, 19 insertions(+), 19 deletions(-)
diff --git a/hw/cs4231a.c b/hw/cs4231a.c
index 598f0322d9..e16665e196 100644
--- a/hw/cs4231a.c
+++ b/hw/cs4231a.c
@@ -59,6 +59,7 @@ static struct {
typedef struct CSState {
ISADevice dev;
QEMUSoundCard card;
+ MemoryRegion ioports;
qemu_irq pic;
uint32_t regs[CS_REGS];
uint8_t dregs[CS_DREGS];
@@ -74,14 +75,6 @@ typedef struct CSState {
int16_t *tab;
} CSState;
-#define IO_READ_PROTO(name) \
- static uint32_t name (void *opaque, uint32_t addr)
-
-#define IO_WRITE_PROTO(name) \
- static void name (void *opaque, uint32_t addr, uint32_t val)
-
-#define GET_SADDR(addr) (addr & 3)
-
#define MODE2 (1 << 6)
#define MCE (1 << 6)
#define PMCE (1 << 4)
@@ -353,12 +346,12 @@ static void cs_reset_voices (CSState *s, uint32_t val)
}
}
-IO_READ_PROTO (cs_read)
+static uint64_t cs_read(void *opaque, target_phys_addr_t addr, unsigned size)
{
CSState *s = opaque;
uint32_t saddr, iaddr, ret;
- saddr = GET_SADDR (addr);
+ saddr = addr;
iaddr = ~0U;
switch (saddr) {
@@ -390,12 +383,14 @@ IO_READ_PROTO (cs_read)
return ret;
}
-IO_WRITE_PROTO (cs_write)
+static void cs_write(void *opaque, target_phys_addr_t addr,
+ uint64_t val64, unsigned size)
{
CSState *s = opaque;
- uint32_t saddr, iaddr;
+ uint32_t saddr, iaddr, val;
- saddr = GET_SADDR (addr);
+ saddr = addr;
+ val = val64;
switch (saddr) {
case Index_Address:
@@ -637,18 +632,23 @@ static const VMStateDescription vmstate_cs4231a = {
}
};
+static const MemoryRegionOps cs_ioport_ops = {
+ .read = cs_read,
+ .write = cs_write,
+ .impl = {
+ .min_access_size = 1,
+ .max_access_size = 1,
+ }
+};
+
static int cs4231a_initfn (ISADevice *dev)
{
CSState *s = DO_UPCAST (CSState, dev, dev);
- int i;
isa_init_irq (dev, &s->pic, s->irq);
- for (i = 0; i < 4; i++) {
- isa_init_ioport(dev, i);
- register_ioport_write (s->port + i, 1, 1, cs_write, s);
- register_ioport_read (s->port + i, 1, 1, cs_read, s);
- }
+ memory_region_init_io(&s->ioports, &cs_ioport_ops, s, "cs4231a", 4);
+ isa_register_ioport(dev, &s->ioports, s->port);
DMA_register_channel (s->dma, cs_dma_read, s);
From 60ea6aa8fcf1bc678b13bf8cff5848e0c8eb8430 Mon Sep 17 00:00:00 2001
From: Richard Henderson <rth@twiddle.net>
Date: Wed, 10 Aug 2011 15:28:15 -0700
Subject: [PATCH 06/14] i8254: Convert to MemoryRegion
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Avi Kivity <avi@redhat.com>
---
hw/i8254.c | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)
diff --git a/hw/i8254.c b/hw/i8254.c
index a9ca9f6f18..12571efc2a 100644
--- a/hw/i8254.c
+++ b/hw/i8254.c
@@ -55,6 +55,7 @@ typedef struct PITChannelState {
typedef struct PITState {
ISADevice dev;
+ MemoryRegion ioports;
uint32_t irq;
uint32_t iobase;
PITChannelState channels[3];
@@ -506,6 +507,16 @@ void hpet_pit_enable(void)
pit_load_count(s, 0);
}
+static const MemoryRegionPortio pit_portio[] = {
+ { 0, 4, 1, .write = pit_ioport_write },
+ { 0, 3, 1, .read = pit_ioport_read },
+ PORTIO_END_OF_LIST()
+};
+
+static const MemoryRegionOps pit_ioport_ops = {
+ .old_portio = pit_portio
+};
+
static int pit_initfn(ISADevice *dev)
{
PITState *pit = DO_UPCAST(PITState, dev, dev);
@@ -516,9 +527,8 @@ static int pit_initfn(ISADevice *dev)
s->irq_timer = qemu_new_timer_ns(vm_clock, pit_irq_timer, s);
s->irq = isa_get_irq(pit->irq);
- register_ioport_write(pit->iobase, 4, 1, pit_ioport_write, pit);
- register_ioport_read(pit->iobase, 3, 1, pit_ioport_read, pit);
- isa_init_ioport(dev, pit->iobase);
+ memory_region_init_io(&pit->ioports, &pit_ioport_ops, pit, "pit", 4);
+ isa_register_ioport(dev, &pit->ioports, pit->iobase);
qdev_set_legacy_instance_id(&dev->qdev, pit->iobase, 2);
From 5632ae46d5bda798e971dae48ebb318ac2c3686a Mon Sep 17 00:00:00 2001
From: Avi Kivity <avi@redhat.com>
Date: Mon, 12 Sep 2011 13:00:05 +0300
Subject: [PATCH 07/14] mips_malta: move i8259 initialization after piix4
initialization
i8259 is an ISA device (or at least, depends on the ISA infrastructure to
register its ioport); and the ISA bus is supplied by piix4. Later patches
make this dependency explicit.
Use qemu_irq_proxy() to stop the cycle by adding an extra layer of
indirection.
Signed-off-by: Avi Kivity <avi@redhat.com>
---
hw/mips_malta.c | 20 +++++++++++++++-----
1 file changed, 15 insertions(+), 5 deletions(-)
diff --git a/hw/mips_malta.c b/hw/mips_malta.c
index 0110daa1a3..1ec1228b87 100644
--- a/hw/mips_malta.c
+++ b/hw/mips_malta.c
@@ -778,7 +778,7 @@ void mips_malta_init (ram_addr_t ram_size,
int64_t kernel_entry;
PCIBus *pci_bus;
CPUState *env;
- qemu_irq *i8259;
+ qemu_irq *i8259 = NULL, *isa_irq;
qemu_irq *cpu_exit_irq;
int piix4_devfn;
i2c_bus *smbus;
@@ -928,17 +928,27 @@ void mips_malta_init (ram_addr_t ram_size,
cpu_mips_irq_init_cpu(env);
cpu_mips_clock_init(env);
- /* Interrupt controller */
- /* The 8259 is attached to the MIPS CPU INT0 pin, ie interrupt 2 */
- i8259 = i8259_init(env->irq[2]);
+ /*
+ * We have a circular dependency problem: pci_bus depends on isa_irq,
+ * isa_irq is provided by i8259, i8259 depends on ISA, ISA depends
+ * on piix4, and piix4 depends on pci_bus. To stop the cycle we have
+ * qemu_irq_proxy() adds an extra bit of indirection, allowing us
+ * to resolve the isa_irq -> i8259 dependency after i8259 is initialized.
+ */
+ isa_irq = qemu_irq_proxy(&i8259, 16);
/* Northbridge */
- pci_bus = gt64120_register(i8259);
+ pci_bus = gt64120_register(isa_irq);
/* Southbridge */
ide_drive_get(hd, MAX_IDE_BUS);
piix4_devfn = piix4_init(pci_bus, 80);
+
+ /* Interrupt controller */
+ /* The 8259 is attached to the MIPS CPU INT0 pin, ie interrupt 2 */
+ i8259 = i8259_init(env->irq[2]);
+
isa_bus_irqs(i8259);
pci_piix4_ide_init(pci_bus, hd, piix4_devfn + 1);
usb_uhci_piix4_init(pci_bus, piix4_devfn + 2);
From e155c99be9439f1fdf245b0b05251f2e225cde62 Mon Sep 17 00:00:00 2001
From: Avi Kivity <avi@redhat.com>
Date: Sun, 18 Sep 2011 16:13:38 +0300
Subject: [PATCH 08/14] mips_jazz: initialize i8259 after the ISA bus
Succeeding i8259 conversion to ISA requires this.
Signed-off-by: Avi Kivity <avi@redhat.com>
---
hw/mips_jazz.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/mips_jazz.c b/hw/mips_jazz.c
index e1ac1472a2..2b911c7fcd 100644
--- a/hw/mips_jazz.c
+++ b/hw/mips_jazz.c
@@ -181,8 +181,8 @@ static void mips_jazz_init(MemoryRegion *address_space,
memory_region_add_subregion(address_space, 0x8000d000, dma_dummy);
/* ISA devices */
- i8259 = i8259_init(env->irq[4]);
isa_bus_new(NULL, address_space_io);
+ i8259 = i8259_init(env->irq[4]);
isa_bus_irqs(i8259);
cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1);
DMA_init(0, cpu_exit_irq);
From a4ac5e64de1b676e0b377792528580065a574815 Mon Sep 17 00:00:00 2001
From: Avi Kivity <avi@redhat.com>
Date: Sun, 18 Sep 2011 16:13:38 +0300
Subject: [PATCH 09/14] mips_r4k: initialize i8259 after the ISA bus
Succeeding i8259 conversion to ISA requires this.
Signed-off-by: Avi Kivity <avi@redhat.com>
---
hw/mips_r4k.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/mips_r4k.c b/hw/mips_r4k.c
index a7dc48753a..d0564d4449 100644
--- a/hw/mips_r4k.c
+++ b/hw/mips_r4k.c
@@ -256,8 +256,8 @@ void mips_r4k_init (ram_addr_t ram_size,
cpu_mips_clock_init(env);
/* The PIC is attached to the MIPS CPU INT0 pin */
- i8259 = i8259_init(env->irq[2]);
isa_bus_new(NULL, get_system_io());
+ i8259 = i8259_init(env->irq[2]);
isa_bus_irqs(i8259);
rtc_init(2000, NULL);
From bac8ad41ab22880e8318cb9ce27083ce0560000c Mon Sep 17 00:00:00 2001
From: Avi Kivity <avi@redhat.com>
Date: Sun, 18 Sep 2011 16:13:38 +0300
Subject: [PATCH 10/14] ppc_prep: initialize i8259 after the ISA bus
Succeeding i8259 conversion to ISA requires this.
Signed-off-by: Avi Kivity <avi@redhat.com>
---
hw/ppc_prep.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/hw/ppc_prep.c b/hw/ppc_prep.c
index f9325bdf2c..d26049b1d1 100644
--- a/hw/ppc_prep.c
+++ b/hw/ppc_prep.c
@@ -648,10 +648,10 @@ static void ppc_prep_init (ram_addr_t ram_size,
if (PPC_INPUT(env) != PPC_FLAGS_INPUT_6xx) {
hw_error("Only 6xx bus is supported on PREP machine\n");
}
- i8259 = i8259_init(first_cpu->irq_inputs[PPC6xx_INPUT_INT]);
- pci_bus = pci_prep_init(i8259, get_system_memory(), get_system_io());
/* Hmm, prep has no pci-isa bridge ??? */
isa_bus_new(NULL, get_system_io());
+ i8259 = i8259_init(first_cpu->irq_inputs[PPC6xx_INPUT_INT]);
+ pci_bus = pci_prep_init(i8259, get_system_memory(), get_system_io());
isa_bus_irqs(i8259);
// pci_bus = i440fx_init();
/* Register 8 MB of ISA IO space (needed for non-contiguous map) */
From 098d314a3263693ec31e227f4018646e74d439a0 Mon Sep 17 00:00:00 2001
From: Richard Henderson <rth@twiddle.net>
Date: Wed, 10 Aug 2011 15:28:16 -0700
Subject: [PATCH 11/14] i8259: Convert to MemoryRegion
The only non-obvious part is pic_poll_read which used
"addr1 >> 7" to detect whether one referred to either
the master or slave PIC. Instead, test this directly.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Avi Kivity <avi@redhat.com>
---
hw/i8259.c | 65 ++++++++++++++++++++++++++++++++++++++----------------
1 file changed, 46 insertions(+), 19 deletions(-)
diff --git a/hw/i8259.c b/hw/i8259.c
index c0b96ab5d0..e5323ffa4d 100644
--- a/hw/i8259.c
+++ b/hw/i8259.c
@@ -59,6 +59,8 @@ typedef struct PicState {
uint8_t elcr; /* PIIX edge/trigger selection*/
uint8_t elcr_mask;
PicState2 *pics_state;
+ MemoryRegion base_io;
+ MemoryRegion elcr_io;
} PicState;
struct PicState2 {
@@ -284,13 +286,15 @@ static void pic_reset(void *opaque)
/* Note: ELCR is not reset */
}
-static void pic_ioport_write(void *opaque, uint32_t addr, uint32_t val)
+static void pic_ioport_write(void *opaque, target_phys_addr_t addr64,
+ uint64_t val64, unsigned size)
{
PicState *s = opaque;
+ uint32_t addr = addr64;
+ uint32_t val = val64;
int priority, cmd, irq;
DPRINTF("write: addr=0x%02x val=0x%02x\n", addr, val);
- addr &= 1;
if (addr == 0) {
if (val & 0x10) {
/* init */
@@ -374,19 +378,21 @@ static void pic_ioport_write(void *opaque, uint32_t addr, uint32_t val)
}
}
-static uint32_t pic_poll_read (PicState *s, uint32_t addr1)
+static uint32_t pic_poll_read(PicState *s)
{
int ret;
ret = pic_get_irq(s);
if (ret >= 0) {
- if (addr1 >> 7) {
+ bool slave = (s == &isa_pic->pics[1]);
+
+ if (slave) {
s->pics_state->pics[0].isr &= ~(1 << 2);
s->pics_state->pics[0].irr &= ~(1 << 2);
}
s->irr &= ~(1 << ret);
s->isr &= ~(1 << ret);
- if (addr1 >> 7 || ret != 2)
+ if (slave || ret != 2)
pic_update_irq(s->pics_state);
} else {
ret = 0x07;
@@ -396,16 +402,15 @@ static uint32_t pic_poll_read (PicState *s, uint32_t addr1)
return ret;
}
-static uint32_t pic_ioport_read(void *opaque, uint32_t addr1)
+static uint64_t pic_ioport_read(void *opaque, target_phys_addr_t addr1,
+ unsigned size)
{
PicState *s = opaque;
- unsigned int addr;
+ unsigned int addr = addr1;
int ret;
- addr = addr1;
- addr &= 1;
if (s->poll) {
- ret = pic_poll_read(s, addr1);
+ ret = pic_poll_read(s);
s->poll = 0;
} else {
if (addr == 0) {
@@ -417,7 +422,7 @@ static uint32_t pic_ioport_read(void *opaque, uint32_t addr1)
ret = s->imr;
}
}
- DPRINTF("read: addr=0x%02x val=0x%02x\n", addr1, ret);
+ DPRINTF("read: addr=0x%02x val=0x%02x\n", addr, ret);
return ret;
}
@@ -427,22 +432,24 @@ uint32_t pic_intack_read(PicState2 *s)
{
int ret;
- ret = pic_poll_read(&s->pics[0], 0x00);
+ ret = pic_poll_read(&s->pics[0]);
if (ret == 2)
- ret = pic_poll_read(&s->pics[1], 0x80) + 8;
+ ret = pic_poll_read(&s->pics[1]) + 8;
/* Prepare for ISR read */
s->pics[0].read_reg_select = 1;
return ret;
}
-static void elcr_ioport_write(void *opaque, uint32_t addr, uint32_t val)
+static void elcr_ioport_write(void *opaque, target_phys_addr_t addr,
+ uint64_t val, unsigned size)
{
PicState *s = opaque;
s->elcr = val & s->elcr_mask;
}
-static uint32_t elcr_ioport_read(void *opaque, uint32_t addr1)
+static uint64_t elcr_ioport_read(void *opaque, target_phys_addr_t addr,
+ unsigned size)
{
PicState *s = opaque;
return s->elcr;
@@ -474,15 +481,35 @@ static const VMStateDescription vmstate_pic = {
}
};
+static const MemoryRegionOps pic_base_ioport_ops = {
+ .read = pic_ioport_read,
+ .write = pic_ioport_write,
+ .impl = {
+ .min_access_size = 1,
+ .max_access_size = 1,
+ },
+};
+
+static const MemoryRegionOps pic_elcr_ioport_ops = {
+ .read = elcr_ioport_read,
+ .write = elcr_ioport_write,
+ .impl = {
+ .min_access_size = 1,
+ .max_access_size = 1,
+ },
+};
+
/* XXX: add generic master/slave system */
static void pic_init1(int io_addr, int elcr_addr, PicState *s)
{
- register_ioport_write(io_addr, 2, 1, pic_ioport_write, s);
- register_ioport_read(io_addr, 2, 1, pic_ioport_read, s);
+ 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, io_addr);
if (elcr_addr >= 0) {
- register_ioport_write(elcr_addr, 1, 1, elcr_ioport_write, s);
- register_ioport_read(elcr_addr, 1, 1, elcr_ioport_read, s);
+ isa_register_ioport(NULL, &s->elcr_io, elcr_addr);
}
+
vmstate_register(NULL, io_addr, &vmstate_pic, s);
qemu_register_reset(pic_reset, s);
}
From dbff76ac330b61ff304f3d188391ec6824b2ed8b Mon Sep 17 00:00:00 2001
From: Richard Henderson <rth@twiddle.net>
Date: Wed, 10 Aug 2011 15:28:17 -0700
Subject: [PATCH 12/14] pckbd: Convert to MemoryRegion
Slightly non-obvious with mips_jazz passing in the region
structure to populate.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Avi Kivity <avi@redhat.com>
---
hw/mips_jazz.c | 4 +++-
hw/pc.h | 2 +-
hw/pckbd.c | 59 ++++++++++++++++++++++++++++++--------------------
3 files changed, 40 insertions(+), 25 deletions(-)
diff --git a/hw/mips_jazz.c b/hw/mips_jazz.c
index 2b911c7fcd..ea07d32ead 100644
--- a/hw/mips_jazz.c
+++ b/hw/mips_jazz.c
@@ -115,6 +115,7 @@ static void mips_jazz_init(MemoryRegion *address_space,
rc4030_dma *dmas;
void* rc4030_opaque;
MemoryRegion *rtc = g_new(MemoryRegion, 1);
+ MemoryRegion *i8042 = g_new(MemoryRegion, 1);
MemoryRegion *dma_dummy = g_new(MemoryRegion, 1);
NICInfo *nd;
DeviceState *dev;
@@ -258,7 +259,8 @@ static void mips_jazz_init(MemoryRegion *address_space,
memory_region_add_subregion(address_space, 0x80004000, rtc);
/* Keyboard (i8042) */
- i8042_mm_init(rc4030[6], rc4030[7], 0x80005000, 0x1000, 0x1);
+ i8042_mm_init(rc4030[6], rc4030[7], i8042, 0x1000, 0x1);
+ memory_region_add_subregion(address_space, 0x80005000, i8042);
/* Serial ports */
if (serial_hds[0]) {
diff --git a/hw/pc.h b/hw/pc.h
index 8e75c71cf7..7e6ddbab82 100644
--- a/hw/pc.h
+++ b/hw/pc.h
@@ -118,7 +118,7 @@ void vmmouse_set_data(const uint32_t *data);
void i8042_init(qemu_irq kbd_irq, qemu_irq mouse_irq, uint32_t io_base);
void i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq,
- target_phys_addr_t base, ram_addr_t size,
+ MemoryRegion *region, ram_addr_t size,
target_phys_addr_t mask);
void i8042_isa_mouse_fake_event(void *opaque);
void i8042_setup_a20_line(ISADevice *dev, qemu_irq *a20_out);
diff --git a/hw/pckbd.c b/hw/pckbd.c
index a272ccdb78..06b40c540c 100644
--- a/hw/pckbd.c
+++ b/hw/pckbd.c
@@ -400,33 +400,27 @@ static void kbd_mm_writeb (void *opaque, target_phys_addr_t addr, uint32_t value
kbd_write_data(s, 0, value & 0xff);
}
-static CPUReadMemoryFunc * const kbd_mm_read[] = {
- &kbd_mm_readb,
- &kbd_mm_readb,
- &kbd_mm_readb,
-};
-
-static CPUWriteMemoryFunc * const kbd_mm_write[] = {
- &kbd_mm_writeb,
- &kbd_mm_writeb,
- &kbd_mm_writeb,
+static const MemoryRegionOps i8042_mmio_ops = {
+ .endianness = DEVICE_NATIVE_ENDIAN,
+ .old_mmio = {
+ .read = { kbd_mm_readb, kbd_mm_readb, kbd_mm_readb },
+ .write = { kbd_mm_writeb, kbd_mm_writeb, kbd_mm_writeb },
+ },
};
void i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq,
- target_phys_addr_t base, ram_addr_t size,
+ MemoryRegion *region, ram_addr_t size,
target_phys_addr_t mask)
{
KBDState *s = g_malloc0(sizeof(KBDState));
- int s_io_memory;
s->irq_kbd = kbd_irq;
s->irq_mouse = mouse_irq;
s->mask = mask;
vmstate_register(NULL, 0, &vmstate_kbd, s);
- s_io_memory = cpu_register_io_memory(kbd_mm_read, kbd_mm_write, s,
- DEVICE_NATIVE_ENDIAN);
- cpu_register_physical_memory(base, size, s_io_memory);
+
+ memory_region_init_io(region, &i8042_mmio_ops, s, "i8042", size);
s->kbd = ps2_kbd_init(kbd_update_kbd_irq, s);
s->mouse = ps2_mouse_init(kbd_update_aux_irq, s);
@@ -435,7 +429,8 @@ void i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq,
typedef struct ISAKBDState {
ISADevice dev;
- KBDState kbd;
+ KBDState kbd;
+ MemoryRegion io[2];
} ISAKBDState;
void i8042_isa_mouse_fake_event(void *opaque)
@@ -464,19 +459,37 @@ static const VMStateDescription vmstate_kbd_isa = {
}
};
+static const MemoryRegionPortio i8042_data_portio[] = {
+ { 0, 1, 1, .read = kbd_read_data, .write = kbd_write_data },
+ PORTIO_END_OF_LIST()
+};
+
+static const MemoryRegionPortio i8042_cmd_portio[] = {
+ { 0, 1, 1, .read = kbd_read_status, .write = kbd_write_command },
+ PORTIO_END_OF_LIST()
+};
+
+static const MemoryRegionOps i8042_data_ops = {
+ .old_portio = i8042_data_portio
+};
+
+static const MemoryRegionOps i8042_cmd_ops = {
+ .old_portio = i8042_cmd_portio
+};
+
static int i8042_initfn(ISADevice *dev)
{
- KBDState *s = &(DO_UPCAST(ISAKBDState, dev, dev)->kbd);
+ ISAKBDState *isa_s = DO_UPCAST(ISAKBDState, dev, dev);
+ KBDState *s = &isa_s->kbd;
isa_init_irq(dev, &s->irq_kbd, 1);
isa_init_irq(dev, &s->irq_mouse, 12);
- register_ioport_read(0x60, 1, 1, kbd_read_data, s);
- register_ioport_write(0x60, 1, 1, kbd_write_data, s);
- isa_init_ioport(dev, 0x60);
- register_ioport_read(0x64, 1, 1, kbd_read_status, s);
- register_ioport_write(0x64, 1, 1, kbd_write_command, s);
- isa_init_ioport(dev, 0x64);
+ memory_region_init_io(isa_s->io + 0, &i8042_data_ops, s, "i8042-data", 1);
+ isa_register_ioport(dev, isa_s->io + 0, 0x60);
+
+ memory_region_init_io(isa_s->io + 1, &i8042_cmd_ops, s, "i8042-cmd", 1);
+ isa_register_ioport(dev, isa_s->io + 1, 0x64);
s->kbd = ps2_kbd_init(kbd_update_kbd_irq, s);
s->mouse = ps2_mouse_init(kbd_update_aux_irq, s);
From a941ae45155d5e78889129183d5dd695329983c0 Mon Sep 17 00:00:00 2001
From: Richard Henderson <rth@twiddle.net>
Date: Wed, 10 Aug 2011 15:28:18 -0700
Subject: [PATCH 13/14] serial: Convert serial_isa_initfn to MemoryRegion
The serial_mm_init path is as yet unconverted.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Avi Kivity <avi@redhat.com>
---
hw/serial.c | 15 ++++++++++++---
1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/hw/serial.c b/hw/serial.c
index ed7fd0aae0..2e6d2122d0 100644
--- a/hw/serial.c
+++ b/hw/serial.c
@@ -157,6 +157,7 @@ struct SerialState {
typedef struct ISASerialState {
ISADevice dev;
+ MemoryRegion io;
uint32_t index;
uint32_t iobase;
uint32_t isairq;
@@ -755,6 +756,15 @@ void serial_set_frequency(SerialState *s, uint32_t frequency)
static const int isa_serial_io[MAX_SERIAL_PORTS] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 };
static const int isa_serial_irq[MAX_SERIAL_PORTS] = { 4, 3, 4, 3 };
+static const MemoryRegionPortio serial_portio[] = {
+ { 0, 8, 1, .read = serial_ioport_read, .write = serial_ioport_write },
+ PORTIO_END_OF_LIST()
+};
+
+static const MemoryRegionOps serial_io_ops = {
+ .old_portio = serial_portio
+};
+
static int serial_isa_initfn(ISADevice *dev)
{
static int index;
@@ -776,9 +786,8 @@ static int serial_isa_initfn(ISADevice *dev)
serial_init_core(s);
qdev_set_legacy_instance_id(&dev->qdev, isa->iobase, 3);
- register_ioport_write(isa->iobase, 8, 1, serial_ioport_write, s);
- register_ioport_read(isa->iobase, 8, 1, serial_ioport_read, s);
- isa_init_ioport_range(dev, isa->iobase, 8);
+ memory_region_init_io(&isa->io, &serial_io_ops, s, "serial", 8);
+ isa_register_ioport(dev, &isa->io, isa->iobase);
return 0;
}
From 2f290a8c3db977056e4840810d0dd42032745f21 Mon Sep 17 00:00:00 2001
From: Richard Henderson <rth@twiddle.net>
Date: Wed, 10 Aug 2011 15:28:20 -0700
Subject: [PATCH 14/14] fdc: Convert isabus_fdc_init1 to MemoryRegion
This requires some amount of hoop-jumping, so that we don't
inadvertently claim port 0x3f6, which is used by ISA IDE.
The sysbus initialization path is as yet unconverted.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Avi Kivity <avi@redhat.com>
---
hw/fdc.c | 53 +++++++++++++++++++++++++++++++++--------------------
1 file changed, 33 insertions(+), 20 deletions(-)
diff --git a/hw/fdc.c b/hw/fdc.c
index 433af73ad7..0f1cee9439 100644
--- a/hw/fdc.c
+++ b/hw/fdc.c
@@ -424,6 +424,7 @@ typedef struct FDCtrlSysBus {
typedef struct FDCtrlISABus {
ISADevice busdev;
+ MemoryRegion io_0, io_7;
struct FDCtrl state;
int32_t bootindexA;
int32_t bootindexB;
@@ -489,16 +490,6 @@ static void fdctrl_write (void *opaque, uint32_t reg, uint32_t value)
}
}
-static uint32_t fdctrl_read_port (void *opaque, uint32_t reg)
-{
- return fdctrl_read(opaque, reg & 7);
-}
-
-static void fdctrl_write_port (void *opaque, uint32_t reg, uint32_t value)
-{
- fdctrl_write(opaque, reg & 7, value);
-}
-
static uint32_t fdctrl_read_mem (void *opaque, target_phys_addr_t reg)
{
return fdctrl_read(opaque, (uint32_t)reg);
@@ -1889,6 +1880,34 @@ static int fdctrl_init_common(FDCtrl *fdctrl)
return fdctrl_connect_drives(fdctrl);
}
+static uint32_t fdctrl_read_port_7(void *opaque, uint32_t reg)
+{
+ return fdctrl_read(opaque, reg + 7);
+}
+
+static void fdctrl_write_port_7(void *opaque, uint32_t reg, uint32_t value)
+{
+ fdctrl_write(opaque, reg + 7, value);
+}
+
+static const MemoryRegionPortio fdc_portio_0[] = {
+ { 1, 5, 1, .read = fdctrl_read, .write = fdctrl_write },
+ PORTIO_END_OF_LIST()
+};
+
+static const MemoryRegionPortio fdc_portio_7[] = {
+ { 0, 1, 1, .read = fdctrl_read_port_7, .write = fdctrl_write_port_7 },
+ PORTIO_END_OF_LIST()
+};
+
+static const MemoryRegionOps fdc_ioport_0_ops = {
+ .old_portio = fdc_portio_0
+};
+
+static const MemoryRegionOps fdc_ioport_7_ops = {
+ .old_portio = fdc_portio_7
+};
+
static int isabus_fdc_init1(ISADevice *dev)
{
FDCtrlISABus *isa = DO_UPCAST(FDCtrlISABus, busdev, dev);
@@ -1898,16 +1917,10 @@ static int isabus_fdc_init1(ISADevice *dev)
int dma_chann = 2;
int ret;
- register_ioport_read(iobase + 0x01, 5, 1,
- &fdctrl_read_port, fdctrl);
- register_ioport_read(iobase + 0x07, 1, 1,
- &fdctrl_read_port, fdctrl);
- register_ioport_write(iobase + 0x01, 5, 1,
- &fdctrl_write_port, fdctrl);
- register_ioport_write(iobase + 0x07, 1, 1,
- &fdctrl_write_port, fdctrl);
- isa_init_ioport_range(dev, iobase, 6);
- isa_init_ioport(dev, iobase + 7);
+ memory_region_init_io(&isa->io_0, &fdc_ioport_0_ops, fdctrl, "fdc", 6);
+ memory_region_init_io(&isa->io_7, &fdc_ioport_7_ops, fdctrl, "fdc", 1);
+ isa_register_ioport(dev, &isa->io_0, iobase);
+ isa_register_ioport(dev, &isa->io_7, iobase + 7);
isa_init_irq(&isa->busdev, &fdctrl->irq, isairq);
fdctrl->dma_chann = dma_chann;