qemu/hw/net/lance.c

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/*
* QEMU AMD PC-Net II (Am79C970A) emulation
*
* Copyright (c) 2004 Antony T Curtis
*
* 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.
*/
/* This software was written to be compatible with the specification:
* AMD Am79C970A PCnet-PCI II Ethernet Controller Data-Sheet
* AMD Publication# 19436 Rev:E Amendment/0 Issue Date: June 2000
*/
/*
* On Sparc32, this is the Lance (Am7990) part of chip STP2000 (Master I/O), also
* produced as NCR89C100. See
* http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR89C100.txt
* and
* http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR92C990.txt
*/
#include "qemu/osdep.h"
#include "hw/sysbus.h"
#include "net/net.h"
#include "qemu/timer.h"
#include "qemu/sockets.h"
#include "hw/sparc/sun4m.h"
#include "pcnet.h"
#include "trace.h"
#include "sysemu/sysemu.h"
#define TYPE_LANCE "lance"
#define SYSBUS_PCNET(obj) \
OBJECT_CHECK(SysBusPCNetState, (obj), TYPE_LANCE)
typedef struct {
SysBusDevice parent_obj;
PCNetState state;
} SysBusPCNetState;
static void parent_lance_reset(void *opaque, int irq, int level)
{
SysBusPCNetState *d = opaque;
if (level)
pcnet_h_reset(&d->state);
}
static void lance_mem_write(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
SysBusPCNetState *d = opaque;
trace_lance_mem_writew(addr, val & 0xffff);
pcnet_ioport_writew(&d->state, addr, val & 0xffff);
}
static uint64_t lance_mem_read(void *opaque, hwaddr addr,
unsigned size)
{
SysBusPCNetState *d = opaque;
uint32_t val;
val = pcnet_ioport_readw(&d->state, addr);
trace_lance_mem_readw(addr, val & 0xffff);
return val & 0xffff;
}
static const MemoryRegionOps lance_mem_ops = {
.read = lance_mem_read,
.write = lance_mem_write,
.endianness = DEVICE_NATIVE_ENDIAN,
.valid = {
.min_access_size = 2,
.max_access_size = 2,
},
};
static NetClientInfo net_lance_info = {
qapi: Change Netdev into a flat union This is a mostly-mechanical conversion that creates a new flat union 'Netdev' QAPI type that covers all the branches of the former 'NetClientOptions' simple union, where the branches are now listed in a new 'NetClientDriver' enum rather than generated from the simple union. The existence of a flat union has no change to the command line syntax accepted for new code, and will make it possible for a future patch to switch the QMP command to parse a boxed union for no change to valid QMP; but it does have some ripple effect on the C code when dealing with the new types. While making the conversion, note that the 'NetLegacy' type remains unchanged: it applies only to legacy command line options, and will not be ported to QMP, so it should remain a wrapper around a simple union; to avoid confusion, the type named 'NetClientOptions' is now gone, and we introduce 'NetLegacyOptions' in its place. Then, in the C code, we convert from NetLegacy to Netdev as soon as possible, so that the bulk of the net stack only has to deal with one QAPI type, not two. Note that since the old legacy code always rejected 'hubport', we can just omit that branch from the new 'NetLegacyOptions' simple union. Based on an idea originally by Zoltán Kővágó <DirtY.iCE.hu@gmail.com>: Message-Id: <01a527fbf1a5de880091f98cf011616a78adeeee.1441627176.git.DirtY.iCE.hu@gmail.com> although the sed script in that patch no longer applies due to other changes in the tree since then, and I also did some manual cleanups (such as fixing whitespace to keep checkpatch happy). Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1468468228-27827-13-git-send-email-eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> [Fixup from Eric squashed in] Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-07-14 06:50:23 +03:00
.type = NET_CLIENT_DRIVER_NIC,
.size = sizeof(NICState),
.receive = pcnet_receive,
.link_status_changed = pcnet_set_link_status,
};
static const VMStateDescription vmstate_lance = {
.name = "pcnet",
.version_id = 3,
.minimum_version_id = 2,
.fields = (VMStateField[]) {
VMSTATE_STRUCT(state, SysBusPCNetState, 0, vmstate_pcnet, PCNetState),
VMSTATE_END_OF_LIST()
}
};
static int lance_init(SysBusDevice *sbd)
{
DeviceState *dev = DEVICE(sbd);
SysBusPCNetState *d = SYSBUS_PCNET(dev);
PCNetState *s = &d->state;
memory_region_init_io(&s->mmio, OBJECT(d), &lance_mem_ops, d,
"lance-mmio", 4);
qdev_init_gpio_in(dev, parent_lance_reset, 1);
sysbus_init_mmio(sbd, &s->mmio);
sysbus_init_irq(sbd, &s->irq);
s->phys_mem_read = ledma_memory_read;
s->phys_mem_write = ledma_memory_write;
pcnet_common_init(dev, s, &net_lance_info);
return 0;
}
static void lance_reset(DeviceState *dev)
{
SysBusPCNetState *d = SYSBUS_PCNET(dev);
pcnet_h_reset(&d->state);
}
static void lance_instance_init(Object *obj)
{
SysBusPCNetState *d = SYSBUS_PCNET(obj);
PCNetState *s = &d->state;
device_add_bootindex_property(obj, &s->conf.bootindex,
"bootindex", "/ethernet-phy@0",
DEVICE(obj), NULL);
}
static Property lance_properties[] = {
DEFINE_PROP_PTR("dma", SysBusPCNetState, state.dma_opaque),
DEFINE_NIC_PROPERTIES(SysBusPCNetState, state.conf),
DEFINE_PROP_END_OF_LIST(),
};
static void lance_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
k->init = lance_init;
set_bit(DEVICE_CATEGORY_NETWORK, dc->categories);
dc->fw_name = "ethernet";
dc->reset = lance_reset;
dc->vmsd = &vmstate_lance;
dc->props = lance_properties;
/* Reason: pointer property "dma" */
qdev: Replace cannot_instantiate_with_device_add_yet with !user_creatable cannot_instantiate_with_device_add_yet was introduced by commit efec3dd631d94160288392721a5f9c39e50fb2bc to replace no_user. It was supposed to be a temporary measure. When it was introduced, we had 54 cannot_instantiate_with_device_add_yet=true lines in the code. Today (3 years later) this number has not shrunk: we now have 57 cannot_instantiate_with_device_add_yet=true lines. I think it is safe to say it is not a temporary measure, and we won't see the flag go away soon. Instead of a long field name that misleads people to believe it is temporary, replace it a shorter and less misleading field: user_creatable. Except for code comments, changes were generated using the following Coccinelle patch: @@ expression DC; @@ ( -DC->cannot_instantiate_with_device_add_yet = false; +DC->user_creatable = true; | -DC->cannot_instantiate_with_device_add_yet = true; +DC->user_creatable = false; ) @@ typedef ObjectClass; expression dc; identifier class, data; @@ static void device_class_init(ObjectClass *class, void *data) { ... dc->hotpluggable = true; +dc->user_creatable = true; ... } @@ @@ struct DeviceClass { ... -bool cannot_instantiate_with_device_add_yet; +bool user_creatable; ... } @@ expression DC; @@ ( -!DC->cannot_instantiate_with_device_add_yet +DC->user_creatable | -DC->cannot_instantiate_with_device_add_yet +!DC->user_creatable ) Cc: Alistair Francis <alistair.francis@xilinx.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Marcel Apfelbaum <marcel@redhat.com> Cc: Markus Armbruster <armbru@redhat.com> Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Thomas Huth <thuth@redhat.com> Acked-by: Alistair Francis <alistair.francis@xilinx.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Marcel Apfelbaum <marcel@redhat.com> Acked-by: Marcel Apfelbaum <marcel@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <20170503203604.31462-2-ehabkost@redhat.com> [ehabkost: kept "TODO remove once we're there" comment] Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2017-05-03 23:35:44 +03:00
dc->user_creatable = false;
}
static const TypeInfo lance_info = {
.name = TYPE_LANCE,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(SysBusPCNetState),
.class_init = lance_class_init,
.instance_init = lance_instance_init,
};
static void lance_register_types(void)
{
type_register_static(&lance_info);
}
type_init(lance_register_types)