diff options
Diffstat (limited to 'qemu/hw/ssi/ssi.c')
| -rw-r--r-- | qemu/hw/ssi/ssi.c | 175 |
1 files changed, 0 insertions, 175 deletions
diff --git a/qemu/hw/ssi/ssi.c b/qemu/hw/ssi/ssi.c deleted file mode 100644 index 9791c0d94..000000000 --- a/qemu/hw/ssi/ssi.c +++ /dev/null @@ -1,175 +0,0 @@ -/* - * QEMU Synchronous Serial Interface support - * - * Copyright (c) 2009 CodeSourcery. - * Copyright (c) 2012 Peter A.G. Crosthwaite (peter.crosthwaite@petalogix.com) - * Copyright (c) 2012 PetaLogix Pty Ltd. - * Written by Paul Brook - * - * This code is licensed under the GNU GPL v2. - * - * Contributions after 2012-01-13 are licensed under the terms of the - * GNU GPL, version 2 or (at your option) any later version. - */ - -#include "qemu/osdep.h" -#include "hw/ssi/ssi.h" - -struct SSIBus { - BusState parent_obj; -}; - -#define TYPE_SSI_BUS "SSI" -#define SSI_BUS(obj) OBJECT_CHECK(SSIBus, (obj), TYPE_SSI_BUS) - -static const TypeInfo ssi_bus_info = { - .name = TYPE_SSI_BUS, - .parent = TYPE_BUS, - .instance_size = sizeof(SSIBus), -}; - -static void ssi_cs_default(void *opaque, int n, int level) -{ - SSISlave *s = SSI_SLAVE(opaque); - bool cs = !!level; - assert(n == 0); - if (s->cs != cs) { - SSISlaveClass *ssc = SSI_SLAVE_GET_CLASS(s); - if (ssc->set_cs) { - ssc->set_cs(s, cs); - } - } - s->cs = cs; -} - -static uint32_t ssi_transfer_raw_default(SSISlave *dev, uint32_t val) -{ - SSISlaveClass *ssc = SSI_SLAVE_GET_CLASS(dev); - - if ((dev->cs && ssc->cs_polarity == SSI_CS_HIGH) || - (!dev->cs && ssc->cs_polarity == SSI_CS_LOW) || - ssc->cs_polarity == SSI_CS_NONE) { - return ssc->transfer(dev, val); - } - return 0; -} - -static int ssi_slave_init(DeviceState *dev) -{ - SSISlave *s = SSI_SLAVE(dev); - SSISlaveClass *ssc = SSI_SLAVE_GET_CLASS(s); - - if (ssc->transfer_raw == ssi_transfer_raw_default && - ssc->cs_polarity != SSI_CS_NONE) { - qdev_init_gpio_in_named(dev, ssi_cs_default, SSI_GPIO_CS, 1); - } - - return ssc->init(s); -} - -static void ssi_slave_class_init(ObjectClass *klass, void *data) -{ - SSISlaveClass *ssc = SSI_SLAVE_CLASS(klass); - DeviceClass *dc = DEVICE_CLASS(klass); - - dc->init = ssi_slave_init; - dc->bus_type = TYPE_SSI_BUS; - if (!ssc->transfer_raw) { - ssc->transfer_raw = ssi_transfer_raw_default; - } -} - -static const TypeInfo ssi_slave_info = { - .name = TYPE_SSI_SLAVE, - .parent = TYPE_DEVICE, - .class_init = ssi_slave_class_init, - .class_size = sizeof(SSISlaveClass), - .abstract = true, -}; - -DeviceState *ssi_create_slave_no_init(SSIBus *bus, const char *name) -{ - return qdev_create(BUS(bus), name); -} - -DeviceState *ssi_create_slave(SSIBus *bus, const char *name) -{ - DeviceState *dev = ssi_create_slave_no_init(bus, name); - - qdev_init_nofail(dev); - return dev; -} - -SSIBus *ssi_create_bus(DeviceState *parent, const char *name) -{ - BusState *bus; - bus = qbus_create(TYPE_SSI_BUS, parent, name); - return SSI_BUS(bus); -} - -uint32_t ssi_transfer(SSIBus *bus, uint32_t val) -{ - BusState *b = BUS(bus); - BusChild *kid; - SSISlaveClass *ssc; - uint32_t r = 0; - - QTAILQ_FOREACH(kid, &b->children, sibling) { - SSISlave *slave = SSI_SLAVE(kid->child); - ssc = SSI_SLAVE_GET_CLASS(slave); - r |= ssc->transfer_raw(slave, val); - } - - return r; -} - -const VMStateDescription vmstate_ssi_slave = { - .name = "SSISlave", - .version_id = 1, - .minimum_version_id = 1, - .fields = (VMStateField[]) { - VMSTATE_BOOL(cs, SSISlave), - VMSTATE_END_OF_LIST() - } -}; - -static void ssi_slave_register_types(void) -{ - type_register_static(&ssi_bus_info); - type_register_static(&ssi_slave_info); -} - -type_init(ssi_slave_register_types) - -typedef struct SSIAutoConnectArg { - qemu_irq **cs_linep; - SSIBus *bus; -} SSIAutoConnectArg; - -static int ssi_auto_connect_slave(Object *child, void *opaque) -{ - SSIAutoConnectArg *arg = opaque; - SSISlave *dev = (SSISlave *)object_dynamic_cast(child, TYPE_SSI_SLAVE); - qemu_irq cs_line; - - if (!dev) { - return 0; - } - - cs_line = qdev_get_gpio_in_named(DEVICE(dev), SSI_GPIO_CS, 0); - qdev_set_parent_bus(DEVICE(dev), BUS(arg->bus)); - **arg->cs_linep = cs_line; - (*arg->cs_linep)++; - return 0; -} - -void ssi_auto_connect_slaves(DeviceState *parent, qemu_irq *cs_line, - SSIBus *bus) -{ - SSIAutoConnectArg arg = { - .cs_linep = &cs_line, - .bus = bus - }; - - object_child_foreach(OBJECT(parent), ssi_auto_connect_slave, &arg); -} |