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qemu-patch-raspberry4/hw/char/parallel.c
Eduardo Habkost db1015e92e Move QOM typedefs and add missing includes 
Some typedefs and macros are defined after the type check macros.
This makes it difficult to automatically replace their
definitions with OBJECT_DECLARE_TYPE.

Patch generated using:

 $ ./scripts/codeconverter/converter.py -i \
   --pattern=QOMStructTypedefSplit $(git grep -l '' -- '*.[ch]')

which will split "typdef struct { ... } TypedefName"
declarations.

Followed by:

 $ ./scripts/codeconverter/converter.py -i --pattern=MoveSymbols \
    $(git grep -l '' -- '*.[ch]')

which will:
- move the typedefs and #defines above the type check macros
- add missing #include "qom/object.h" lines if necessary

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20200831210740.126168-9-ehabkost@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20200831210740.126168-10-ehabkost@redhat.com>
Message-Id: <20200831210740.126168-11-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2020-09-09 09:26:43 -04:00

671 lines
20 KiB
C
Raw Blame History

/*
* QEMU Parallel PORT emulation
*
* Copyright (c) 2003-2005 Fabrice Bellard
* Copyright (c) 2007 Marko Kohtala
*
* 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 "qemu/osdep.h"
#include "qapi/error.h"
#include "qemu/module.h"
#include "chardev/char-parallel.h"
#include "chardev/char-fe.h"
#include "hw/acpi/aml-build.h"
#include "hw/irq.h"
#include "hw/isa/isa.h"
#include "hw/qdev-properties.h"
#include "migration/vmstate.h"
#include "hw/char/parallel.h"
#include "sysemu/reset.h"
#include "sysemu/sysemu.h"
#include "trace.h"
#include "qom/object.h"
//#define DEBUG_PARALLEL
#ifdef DEBUG_PARALLEL
#define pdebug(fmt, ...) printf("pp: " fmt, ## __VA_ARGS__)
#else
#define pdebug(fmt, ...) ((void)0)
#endif
#define PARA_REG_DATA 0
#define PARA_REG_STS 1
#define PARA_REG_CTR 2
#define PARA_REG_EPP_ADDR 3
#define PARA_REG_EPP_DATA 4
/*
* 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 */
#define PARA_STS_TMOUT 0x01 /* EPP timeout */
/*
* These are the definitions for the Printer Control Register
*/
#define PARA_CTR_DIR 0x20 /* Direction (1=read, 0=write) */
#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 */
#define PARA_CTR_SIGNAL (PARA_CTR_SELECT|PARA_CTR_INIT|PARA_CTR_AUTOLF|PARA_CTR_STROBE)
typedef struct ParallelState {
MemoryRegion iomem;
uint8_t dataw;
uint8_t datar;
uint8_t status;
uint8_t control;
qemu_irq irq;
int irq_pending;
CharBackend chr;
int hw_driver;
int epp_timeout;
uint32_t last_read_offset; /* For debugging */
/* Memory-mapped interface */
int it_shift;
PortioList portio_list;
} ParallelState;
#define TYPE_ISA_PARALLEL "isa-parallel"
typedef struct ISAParallelState ISAParallelState;
#define ISA_PARALLEL(obj) \
OBJECT_CHECK(ISAParallelState, (obj), TYPE_ISA_PARALLEL)
struct ISAParallelState {
ISADevice parent_obj;
uint32_t index;
uint32_t iobase;
uint32_t isairq;
ParallelState state;
};
static void parallel_update_irq(ParallelState *s)
{
if (s->irq_pending)
qemu_irq_raise(s->irq);
else
qemu_irq_lower(s->irq);
}
static void
parallel_ioport_write_sw(void *opaque, uint32_t addr, uint32_t val)
{
ParallelState *s = opaque;
addr &= 7;
trace_parallel_ioport_write("SW", addr, val);
switch(addr) {
case PARA_REG_DATA:
s->dataw = val;
parallel_update_irq(s);
break;
case PARA_REG_CTR:
val |= 0xc0;
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)
/* XXX this blocks entire thread. Rewrite to use
* qemu_chr_fe_write and background I/O callbacks */
qemu_chr_fe_write_all(&s->chr, &s->dataw, 1);
} else {
if (s->control & PARA_CTR_INTEN) {
s->irq_pending = 1;
}
}
}
parallel_update_irq(s);
s->control = val;
break;
}
}
static void parallel_ioport_write_hw(void *opaque, uint32_t addr, uint32_t val)
{
ParallelState *s = opaque;
uint8_t parm = val;
int dir;
/* Sometimes programs do several writes for timing purposes on old
HW. Take care not to waste time on writes that do nothing. */
s->last_read_offset = ~0U;
addr &= 7;
trace_parallel_ioport_write("HW", addr, val);
switch(addr) {
case PARA_REG_DATA:
if (s->dataw == val)
return;
pdebug("wd%02x\n", val);
qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_PP_WRITE_DATA, &parm);
s->dataw = val;
break;
case PARA_REG_STS:
pdebug("ws%02x\n", val);
if (val & PARA_STS_TMOUT)
s->epp_timeout = 0;
break;
case PARA_REG_CTR:
val |= 0xc0;
if (s->control == val)
return;
pdebug("wc%02x\n", val);
if ((val & PARA_CTR_DIR) != (s->control & PARA_CTR_DIR)) {
if (val & PARA_CTR_DIR) {
dir = 1;
} else {
dir = 0;
}
qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_PP_DATA_DIR, &dir);
parm &= ~PARA_CTR_DIR;
}
qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_PP_WRITE_CONTROL, &parm);
s->control = val;
break;
case PARA_REG_EPP_ADDR:
if ((s->control & (PARA_CTR_DIR|PARA_CTR_SIGNAL)) != PARA_CTR_INIT)
/* Controls not correct for EPP address cycle, so do nothing */
pdebug("wa%02x s\n", val);
else {
struct ParallelIOArg ioarg = { .buffer = &parm, .count = 1 };
if (qemu_chr_fe_ioctl(&s->chr,
CHR_IOCTL_PP_EPP_WRITE_ADDR, &ioarg)) {
s->epp_timeout = 1;
pdebug("wa%02x t\n", val);
}
else
pdebug("wa%02x\n", val);
}
break;
case PARA_REG_EPP_DATA:
if ((s->control & (PARA_CTR_DIR|PARA_CTR_SIGNAL)) != PARA_CTR_INIT)
/* Controls not correct for EPP data cycle, so do nothing */
pdebug("we%02x s\n", val);
else {
struct ParallelIOArg ioarg = { .buffer = &parm, .count = 1 };
if (qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_PP_EPP_WRITE, &ioarg)) {
s->epp_timeout = 1;
pdebug("we%02x t\n", val);
}
else
pdebug("we%02x\n", val);
}
break;
}
}
static void
parallel_ioport_eppdata_write_hw2(void *opaque, uint32_t addr, uint32_t val)
{
ParallelState *s = opaque;
uint16_t eppdata = cpu_to_le16(val);
int err;
struct ParallelIOArg ioarg = {
.buffer = &eppdata, .count = sizeof(eppdata)
};
trace_parallel_ioport_write("EPP", addr, val);
if ((s->control & (PARA_CTR_DIR|PARA_CTR_SIGNAL)) != PARA_CTR_INIT) {
/* Controls not correct for EPP data cycle, so do nothing */
pdebug("we%04x s\n", val);
return;
}
err = qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_PP_EPP_WRITE, &ioarg);
if (err) {
s->epp_timeout = 1;
pdebug("we%04x t\n", val);
}
else
pdebug("we%04x\n", val);
}
static void
parallel_ioport_eppdata_write_hw4(void *opaque, uint32_t addr, uint32_t val)
{
ParallelState *s = opaque;
uint32_t eppdata = cpu_to_le32(val);
int err;
struct ParallelIOArg ioarg = {
.buffer = &eppdata, .count = sizeof(eppdata)
};
trace_parallel_ioport_write("EPP", addr, val);
if ((s->control & (PARA_CTR_DIR|PARA_CTR_SIGNAL)) != PARA_CTR_INIT) {
/* Controls not correct for EPP data cycle, so do nothing */
pdebug("we%08x s\n", val);
return;
}
err = qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_PP_EPP_WRITE, &ioarg);
if (err) {
s->epp_timeout = 1;
pdebug("we%08x t\n", val);
}
else
pdebug("we%08x\n", val);
}
static uint32_t parallel_ioport_read_sw(void *opaque, uint32_t addr)
{
ParallelState *s = opaque;
uint32_t ret = 0xff;
addr &= 7;
switch(addr) {
case PARA_REG_DATA:
if (s->control & PARA_CTR_DIR)
ret = s->datar;
else
ret = s->dataw;
break;
case PARA_REG_STS:
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 PARA_REG_CTR:
ret = s->control;
break;
}
trace_parallel_ioport_read("SW", addr, ret);
return ret;
}
static uint32_t parallel_ioport_read_hw(void *opaque, uint32_t addr)
{
ParallelState *s = opaque;
uint8_t ret = 0xff;
addr &= 7;
switch(addr) {
case PARA_REG_DATA:
qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_PP_READ_DATA, &ret);
if (s->last_read_offset != addr || s->datar != ret)
pdebug("rd%02x\n", ret);
s->datar = ret;
break;
case PARA_REG_STS:
qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_PP_READ_STATUS, &ret);
ret &= ~PARA_STS_TMOUT;
if (s->epp_timeout)
ret |= PARA_STS_TMOUT;
if (s->last_read_offset != addr || s->status != ret)
pdebug("rs%02x\n", ret);
s->status = ret;
break;
case PARA_REG_CTR:
/* s->control has some bits fixed to 1. It is zero only when
it has not been yet written to. */
if (s->control == 0) {
qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_PP_READ_CONTROL, &ret);
if (s->last_read_offset != addr)
pdebug("rc%02x\n", ret);
s->control = ret;
}
else {
ret = s->control;
if (s->last_read_offset != addr)
pdebug("rc%02x\n", ret);
}
break;
case PARA_REG_EPP_ADDR:
if ((s->control & (PARA_CTR_DIR | PARA_CTR_SIGNAL)) !=
(PARA_CTR_DIR | PARA_CTR_INIT))
/* Controls not correct for EPP addr cycle, so do nothing */
pdebug("ra%02x s\n", ret);
else {
struct ParallelIOArg ioarg = { .buffer = &ret, .count = 1 };
if (qemu_chr_fe_ioctl(&s->chr,
CHR_IOCTL_PP_EPP_READ_ADDR, &ioarg)) {
s->epp_timeout = 1;
pdebug("ra%02x t\n", ret);
}
else
pdebug("ra%02x\n", ret);
}
break;
case PARA_REG_EPP_DATA:
if ((s->control & (PARA_CTR_DIR | PARA_CTR_SIGNAL)) !=
(PARA_CTR_DIR | PARA_CTR_INIT))
/* Controls not correct for EPP data cycle, so do nothing */
pdebug("re%02x s\n", ret);
else {
struct ParallelIOArg ioarg = { .buffer = &ret, .count = 1 };
if (qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_PP_EPP_READ, &ioarg)) {
s->epp_timeout = 1;
pdebug("re%02x t\n", ret);
}
else
pdebug("re%02x\n", ret);
}
break;
}
trace_parallel_ioport_read("HW", addr, ret);
s->last_read_offset = addr;
return ret;
}
static uint32_t
parallel_ioport_eppdata_read_hw2(void *opaque, uint32_t addr)
{
ParallelState *s = opaque;
uint32_t ret;
uint16_t eppdata = ~0;
int err;
struct ParallelIOArg ioarg = {
.buffer = &eppdata, .count = sizeof(eppdata)
};
if ((s->control & (PARA_CTR_DIR|PARA_CTR_SIGNAL)) != (PARA_CTR_DIR|PARA_CTR_INIT)) {
/* Controls not correct for EPP data cycle, so do nothing */
pdebug("re%04x s\n", eppdata);
return eppdata;
}
err = qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_PP_EPP_READ, &ioarg);
ret = le16_to_cpu(eppdata);
if (err) {
s->epp_timeout = 1;
pdebug("re%04x t\n", ret);
}
else
pdebug("re%04x\n", ret);
trace_parallel_ioport_read("EPP", addr, ret);
return ret;
}
static uint32_t
parallel_ioport_eppdata_read_hw4(void *opaque, uint32_t addr)
{
ParallelState *s = opaque;
uint32_t ret;
uint32_t eppdata = ~0U;
int err;
struct ParallelIOArg ioarg = {
.buffer = &eppdata, .count = sizeof(eppdata)
};
if ((s->control & (PARA_CTR_DIR|PARA_CTR_SIGNAL)) != (PARA_CTR_DIR|PARA_CTR_INIT)) {
/* Controls not correct for EPP data cycle, so do nothing */
pdebug("re%08x s\n", eppdata);
return eppdata;
}
err = qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_PP_EPP_READ, &ioarg);
ret = le32_to_cpu(eppdata);
if (err) {
s->epp_timeout = 1;
pdebug("re%08x t\n", ret);
}
else
pdebug("re%08x\n", ret);
trace_parallel_ioport_read("EPP", addr, ret);
return ret;
}
static void parallel_ioport_ecp_write(void *opaque, uint32_t addr, uint32_t val)
{
trace_parallel_ioport_write("ECP", addr & 7, val);
pdebug("wecp%d=%02x\n", addr & 7, val);
}
static uint32_t parallel_ioport_ecp_read(void *opaque, uint32_t addr)
{
uint8_t ret = 0xff;
trace_parallel_ioport_read("ECP", addr & 7, ret);
pdebug("recp%d:%02x\n", addr & 7, ret);
return ret;
}
static void parallel_reset(void *opaque)
{
ParallelState *s = opaque;
s->datar = ~0;
s->dataw = ~0;
s->status = PARA_STS_BUSY;
s->status |= PARA_STS_ACK;
s->status |= PARA_STS_ONLINE;
s->status |= PARA_STS_ERROR;
s->status |= PARA_STS_TMOUT;
s->control = PARA_CTR_SELECT;
s->control |= PARA_CTR_INIT;
s->control |= 0xc0;
s->irq_pending = 0;
s->hw_driver = 0;
s->epp_timeout = 0;
s->last_read_offset = ~0U;
}
static const int isa_parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc };
static const MemoryRegionPortio isa_parallel_portio_hw_list[] = {
{ 0, 8, 1,
.read = parallel_ioport_read_hw,
.write = parallel_ioport_write_hw },
{ 4, 1, 2,
.read = parallel_ioport_eppdata_read_hw2,
.write = parallel_ioport_eppdata_write_hw2 },
{ 4, 1, 4,
.read = parallel_ioport_eppdata_read_hw4,
.write = parallel_ioport_eppdata_write_hw4 },
{ 0x400, 8, 1,
.read = parallel_ioport_ecp_read,
.write = parallel_ioport_ecp_write },
PORTIO_END_OF_LIST(),
};
static const MemoryRegionPortio isa_parallel_portio_sw_list[] = {
{ 0, 8, 1,
.read = parallel_ioport_read_sw,
.write = parallel_ioport_write_sw },
PORTIO_END_OF_LIST(),
};
static const VMStateDescription vmstate_parallel_isa = {
.name = "parallel_isa",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT8(state.dataw, ISAParallelState),
VMSTATE_UINT8(state.datar, ISAParallelState),
VMSTATE_UINT8(state.status, ISAParallelState),
VMSTATE_UINT8(state.control, ISAParallelState),
VMSTATE_INT32(state.irq_pending, ISAParallelState),
VMSTATE_INT32(state.epp_timeout, ISAParallelState),
VMSTATE_END_OF_LIST()
}
};
static int parallel_can_receive(void *opaque)
{
return 1;
}
static void parallel_isa_realizefn(DeviceState *dev, Error **errp)
{
static int index;
ISADevice *isadev = ISA_DEVICE(dev);
ISAParallelState *isa = ISA_PARALLEL(dev);
ParallelState *s = &isa->state;
int base;
uint8_t dummy;
if (!qemu_chr_fe_backend_connected(&s->chr)) {
error_setg(errp, "Can't create parallel device, empty char device");
return;
}
if (isa->index == -1) {
isa->index = index;
}
if (isa->index >= MAX_PARALLEL_PORTS) {
error_setg(errp, "Max. supported number of parallel ports is %d.",
MAX_PARALLEL_PORTS);
return;
}
if (isa->iobase == -1) {
isa->iobase = isa_parallel_io[isa->index];
}
index++;
base = isa->iobase;
isa_init_irq(isadev, &s->irq, isa->isairq);
qemu_register_reset(parallel_reset, s);
qemu_chr_fe_set_handlers(&s->chr, parallel_can_receive, NULL,
NULL, NULL, s, NULL, true);
if (qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_PP_READ_STATUS, &dummy) == 0) {
s->hw_driver = 1;
s->status = dummy;
}
isa_register_portio_list(isadev, &s->portio_list, base,
(s->hw_driver
? &isa_parallel_portio_hw_list[0]
: &isa_parallel_portio_sw_list[0]),
s, "parallel");
}
static void parallel_isa_build_aml(ISADevice *isadev, Aml *scope)
{
ISAParallelState *isa = ISA_PARALLEL(isadev);
Aml *dev;
Aml *crs;
crs = aml_resource_template();
aml_append(crs, aml_io(AML_DECODE16, isa->iobase, isa->iobase, 0x08, 0x08));
aml_append(crs, aml_irq_no_flags(isa->isairq));
dev = aml_device("LPT%d", isa->index + 1);
aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0400")));
aml_append(dev, aml_name_decl("_UID", aml_int(isa->index + 1)));
aml_append(dev, aml_name_decl("_STA", aml_int(0xf)));
aml_append(dev, aml_name_decl("_CRS", crs));
aml_append(scope, dev);
}
/* Memory mapped interface */
static uint64_t parallel_mm_readfn(void *opaque, hwaddr addr, unsigned size)
{
ParallelState *s = opaque;
return parallel_ioport_read_sw(s, addr >> s->it_shift) &
MAKE_64BIT_MASK(0, size * 8);
}
static void parallel_mm_writefn(void *opaque, hwaddr addr,
uint64_t value, unsigned size)
{
ParallelState *s = opaque;
parallel_ioport_write_sw(s, addr >> s->it_shift,
value & MAKE_64BIT_MASK(0, size * 8));
}
static const MemoryRegionOps parallel_mm_ops = {
.read = parallel_mm_readfn,
.write = parallel_mm_writefn,
.valid.min_access_size = 1,
.valid.max_access_size = 4,
.endianness = DEVICE_NATIVE_ENDIAN,
};
/* If fd is zero, it means that the parallel device uses the console */
bool parallel_mm_init(MemoryRegion *address_space,
hwaddr base, int it_shift, qemu_irq irq,
Chardev *chr)
{
ParallelState *s;
s = g_malloc0(sizeof(ParallelState));
s->irq = irq;
qemu_chr_fe_init(&s->chr, chr, &error_abort);
s->it_shift = it_shift;
qemu_register_reset(parallel_reset, s);
memory_region_init_io(&s->iomem, NULL, &parallel_mm_ops, s,
"parallel", 8 << it_shift);
memory_region_add_subregion(address_space, base, &s->iomem);
return true;
}
static Property parallel_isa_properties[] = {
DEFINE_PROP_UINT32("index", ISAParallelState, index, -1),
DEFINE_PROP_UINT32("iobase", ISAParallelState, iobase, -1),
DEFINE_PROP_UINT32("irq", ISAParallelState, isairq, 7),
DEFINE_PROP_CHR("chardev", ISAParallelState, state.chr),
DEFINE_PROP_END_OF_LIST(),
};
static void parallel_isa_class_initfn(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
ISADeviceClass *isa = ISA_DEVICE_CLASS(klass);
dc->realize = parallel_isa_realizefn;
dc->vmsd = &vmstate_parallel_isa;
isa->build_aml = parallel_isa_build_aml;
device_class_set_props(dc, parallel_isa_properties);
set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
}
static const TypeInfo parallel_isa_info = {
.name = TYPE_ISA_PARALLEL,
.parent = TYPE_ISA_DEVICE,
.instance_size = sizeof(ISAParallelState),
.class_init = parallel_isa_class_initfn,
};
static void parallel_register_types(void)
{
type_register_static(&parallel_isa_info);
}
type_init(parallel_register_types)
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